/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/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:56:03,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:56:03,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 02:56:03,706 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:56:03,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:56:03,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:56:03,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:56:03,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:56:03,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:56:03,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:56:03,742 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:56:03,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:56:03,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:56:03,744 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:56:03,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:56:03,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:56:03,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:56:03,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:56:03,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:56:03,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:56:03,745 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:56:03,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:56:03,747 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:56:03,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:56:03,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:56:03,748 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:56:03,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:56:03,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:56:03,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:56:03,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:56:03,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:56:03,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:56:03,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:56:03,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:56:03,750 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:56:03,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:56:04,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:56:04,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:56:04,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:56:04,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:56:04,086 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:56:04,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2023-08-27 02:56:05,275 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:56:05,549 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:56:05,550 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2023-08-27 02:56:05,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7578b27/28b373b9a9c2441a9d4f90a83bb7a343/FLAGb10ac9f7b [2023-08-27 02:56:05,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e7578b27/28b373b9a9c2441a9d4f90a83bb7a343 [2023-08-27 02:56:05,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:56:05,598 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:56:05,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:56:05,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:56:05,604 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:56:05,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:56:05" (1/1) ... [2023-08-27 02:56:05,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1b89ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:05, skipping insertion in model container [2023-08-27 02:56:05,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:56:05" (1/1) ... [2023-08-27 02:56:05,652 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:56:05,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:56:05,979 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:56:06,004 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-27 02:56:06,006 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-27 02:56:06,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:56:06,060 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:56:06,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06 WrapperNode [2023-08-27 02:56:06,060 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:56:06,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:56:06,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:56:06,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:56:06,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,104 INFO L138 Inliner]: procedures = 168, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-08-27 02:56:06,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:56:06,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:56:06,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:56:06,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:56:06,112 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,124 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,126 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:56:06,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:56:06,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:56:06,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:56:06,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (1/1) ... [2023-08-27 02:56:06,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:56:06,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:56:06,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 02:56:06,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 02:56:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:56:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:56:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:56:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:56:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:56:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:56:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 02:56:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:56:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:56:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:56:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:56:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:56:06,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:56:06,194 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:56:06,300 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:56:06,302 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:56:06,500 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:56:06,509 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:56:06,509 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 02:56:06,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:56:06 BoogieIcfgContainer [2023-08-27 02:56:06,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:56:06,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:56:06,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:56:06,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:56:06,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:56:05" (1/3) ... [2023-08-27 02:56:06,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b07e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:56:06, skipping insertion in model container [2023-08-27 02:56:06,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:56:06" (2/3) ... [2023-08-27 02:56:06,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b07e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:56:06, skipping insertion in model container [2023-08-27 02:56:06,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:56:06" (3/3) ... [2023-08-27 02:56:06,521 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2023-08-27 02:56:06,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:56:06,537 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 02:56:06,537 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:56:06,652 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:56:06,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 109 transitions, 234 flow [2023-08-27 02:56:06,789 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-08-27 02:56:06,790 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:56:06,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 107 events. 2/107 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 94 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-08-27 02:56:06,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 109 transitions, 234 flow [2023-08-27 02:56:06,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 95 transitions, 202 flow [2023-08-27 02:56:06,804 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:56:06,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 95 transitions, 202 flow [2023-08-27 02:56:06,819 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 95 transitions, 202 flow [2023-08-27 02:56:06,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 202 flow [2023-08-27 02:56:06,858 INFO L124 PetriNetUnfolderBase]: 0/95 cut-off events. [2023-08-27 02:56:06,858 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:56:06,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 0/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-27 02:56:06,861 INFO L119 LiptonReduction]: Number of co-enabled transitions 1516 [2023-08-27 02:56:09,973 INFO L134 LiptonReduction]: Checked pairs total: 6588 [2023-08-27 02:56:09,973 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-27 02:56:09,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:56:09,988 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;@78a008d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:56:09,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 02:56:09,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:56:09,991 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 02:56:09,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:56:09,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:09,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:56:09,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:09,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 11232720, now seen corresponding path program 1 times [2023-08-27 02:56:10,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29700332] [2023-08-27 02:56:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:10,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:10,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:10,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29700332] [2023-08-27 02:56:10,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29700332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:10,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:10,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:56:10,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445901100] [2023-08-27 02:56:10,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:10,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:10,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:10,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:10,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 02:56:10,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:10,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 02:56:10,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:10,450 INFO L124 PetriNetUnfolderBase]: 315/634 cut-off events. [2023-08-27 02:56:10,450 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 02:56:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 634 events. 315/634 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3060 event pairs, 103 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 1164. Up to 393 conditions per place. [2023-08-27 02:56:10,457 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 44 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-27 02:56:10,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 218 flow [2023-08-27 02:56:10,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:10,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-27 02:56:10,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168582375478927 [2023-08-27 02:56:10,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-27 02:56:10,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-27 02:56:10,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:10,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-27 02:56:10,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,485 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 3 states and 322 transitions. [2023-08-27 02:56:10,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 218 flow [2023-08-27 02:56:10,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:56:10,490 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 90 flow [2023-08-27 02:56:10,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-27 02:56:10,495 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 02:56:10,495 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 90 flow [2023-08-27 02:56:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:10,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 02:56:10,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:56:10,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:10,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 11232768, now seen corresponding path program 1 times [2023-08-27 02:56:10,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:10,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908220161] [2023-08-27 02:56:10,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:10,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:10,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:10,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:10,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908220161] [2023-08-27 02:56:10,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908220161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:10,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:10,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:56:10,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162410190] [2023-08-27 02:56:10,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:10,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:10,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:10,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:10,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 02:56:10,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:10,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 02:56:10,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:10,672 INFO L124 PetriNetUnfolderBase]: 283/650 cut-off events. [2023-08-27 02:56:10,673 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 02:56:10,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1272 conditions, 650 events. 283/650 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3281 event pairs, 103 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 414. Up to 419 conditions per place. [2023-08-27 02:56:10,681 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-08-27 02:56:10,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 224 flow [2023-08-27 02:56:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:10,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-08-27 02:56:10,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168582375478927 [2023-08-27 02:56:10,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-08-27 02:56:10,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-08-27 02:56:10,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:10,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-08-27 02:56:10,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,693 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 90 flow. Second operand 3 states and 322 transitions. [2023-08-27 02:56:10,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 224 flow [2023-08-27 02:56:10,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 02:56:10,698 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 100 flow [2023-08-27 02:56:10,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-08-27 02:56:10,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 02:56:10,699 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 100 flow [2023-08-27 02:56:10,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:10,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:10,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:56:10,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:10,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:10,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1316659288, now seen corresponding path program 1 times [2023-08-27 02:56:10,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609089799] [2023-08-27 02:56:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:10,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609089799] [2023-08-27 02:56:10,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609089799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:10,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:10,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:56:10,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065594244] [2023-08-27 02:56:10,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:10,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:10,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:10,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 02:56:10,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:10,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 02:56:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:10,934 INFO L124 PetriNetUnfolderBase]: 319/616 cut-off events. [2023-08-27 02:56:10,934 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-08-27 02:56:10,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 616 events. 319/616 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2556 event pairs, 189 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 417. Up to 350 conditions per place. [2023-08-27 02:56:10,937 INFO L140 encePairwiseOnDemand]: 167/174 looper letters, 50 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-27 02:56:10,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 270 flow [2023-08-27 02:56:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-27 02:56:10,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6302681992337165 [2023-08-27 02:56:10,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-27 02:56:10,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-27 02:56:10,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:10,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-27 02:56:10,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 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 02:56:10,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,942 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 100 flow. Second operand 3 states and 329 transitions. [2023-08-27 02:56:10,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 270 flow [2023-08-27 02:56:10,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:56:10,944 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 136 flow [2023-08-27 02:56:10,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-27 02:56:10,945 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-27 02:56:10,945 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 136 flow [2023-08-27 02:56:10,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:10,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:10,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:56:10,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:10,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:10,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1316659336, now seen corresponding path program 1 times [2023-08-27 02:56:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:10,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448027999] [2023-08-27 02:56:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:10,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:10,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:10,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448027999] [2023-08-27 02:56:10,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448027999] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:10,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:10,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:56:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734113662] [2023-08-27 02:56:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:10,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:10,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:10,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 02:56:10,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:10,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:10,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 02:56:10,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:11,067 INFO L124 PetriNetUnfolderBase]: 265/514 cut-off events. [2023-08-27 02:56:11,067 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-08-27 02:56:11,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 514 events. 265/514 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2004 event pairs, 185 based on Foata normal form. 36/544 useless extension candidates. Maximal degree in co-relation 596. Up to 346 conditions per place. [2023-08-27 02:56:11,070 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 41 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-27 02:56:11,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 244 flow [2023-08-27 02:56:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-27 02:56:11,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2023-08-27 02:56:11,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-27 02:56:11,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-27 02:56:11,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:11,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-27 02:56:11,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,075 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 136 flow. Second operand 3 states and 318 transitions. [2023-08-27 02:56:11,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 244 flow [2023-08-27 02:56:11,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:56:11,078 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 122 flow [2023-08-27 02:56:11,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-27 02:56:11,079 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-27 02:56:11,079 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 122 flow [2023-08-27 02:56:11,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:11,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:11,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:56:11,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:11,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:11,080 INFO L85 PathProgramCache]: Analyzing trace with hash -581276466, now seen corresponding path program 1 times [2023-08-27 02:56:11,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:11,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037127773] [2023-08-27 02:56:11,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:11,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:11,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:11,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037127773] [2023-08-27 02:56:11,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037127773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:11,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:11,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:56:11,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420445246] [2023-08-27 02:56:11,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:11,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:11,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:11,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:11,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:11,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 02:56:11,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:11,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 02:56:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:11,223 INFO L124 PetriNetUnfolderBase]: 76/247 cut-off events. [2023-08-27 02:56:11,223 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 02:56:11,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 247 events. 76/247 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 996 event pairs, 18 based on Foata normal form. 40/287 useless extension candidates. Maximal degree in co-relation 308. Up to 136 conditions per place. [2023-08-27 02:56:11,226 INFO L140 encePairwiseOnDemand]: 166/174 looper letters, 24 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-08-27 02:56:11,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 198 flow [2023-08-27 02:56:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:11,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-27 02:56:11,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593869731800766 [2023-08-27 02:56:11,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-27 02:56:11,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-27 02:56:11,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:11,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-27 02:56:11,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,231 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 122 flow. Second operand 3 states and 292 transitions. [2023-08-27 02:56:11,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 198 flow [2023-08-27 02:56:11,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:56:11,235 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 134 flow [2023-08-27 02:56:11,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-27 02:56:11,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-27 02:56:11,237 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 134 flow [2023-08-27 02:56:11,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:11,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:11,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:56:11,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:11,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash -652308531, now seen corresponding path program 1 times [2023-08-27 02:56:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:11,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262201695] [2023-08-27 02:56:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:11,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:11,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262201695] [2023-08-27 02:56:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262201695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:11,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:11,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:56:11,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964123540] [2023-08-27 02:56:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:11,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:56:11,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:56:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:56:11,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 02:56:11,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:11,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 02:56:11,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:11,372 INFO L124 PetriNetUnfolderBase]: 82/237 cut-off events. [2023-08-27 02:56:11,372 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 02:56:11,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 237 events. 82/237 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 862 event pairs, 64 based on Foata normal form. 6/241 useless extension candidates. Maximal degree in co-relation 297. Up to 177 conditions per place. [2023-08-27 02:56:11,374 INFO L140 encePairwiseOnDemand]: 169/174 looper letters, 28 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-08-27 02:56:11,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 199 flow [2023-08-27 02:56:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:56:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:56:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2023-08-27 02:56:11,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373563218390804 [2023-08-27 02:56:11,376 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2023-08-27 02:56:11,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2023-08-27 02:56:11,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:11,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2023-08-27 02:56:11,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,379 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,379 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 134 flow. Second operand 4 states and 374 transitions. [2023-08-27 02:56:11,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 199 flow [2023-08-27 02:56:11,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:56:11,381 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 128 flow [2023-08-27 02:56:11,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-27 02:56:11,381 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-08-27 02:56:11,382 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 128 flow [2023-08-27 02:56:11,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:11,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:11,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:56:11,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:11,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:11,383 INFO L85 PathProgramCache]: Analyzing trace with hash -253855623, now seen corresponding path program 1 times [2023-08-27 02:56:11,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:11,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787536116] [2023-08-27 02:56:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:11,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:11,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:11,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787536116] [2023-08-27 02:56:11,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787536116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:11,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:11,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:56:11,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298468052] [2023-08-27 02:56:11,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:11,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:56:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:11,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:56:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:56:11,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 02:56:11,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:11,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 02:56:11,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:11,524 INFO L124 PetriNetUnfolderBase]: 77/236 cut-off events. [2023-08-27 02:56:11,524 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 02:56:11,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 236 events. 77/236 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 868 event pairs, 12 based on Foata normal form. 6/242 useless extension candidates. Maximal degree in co-relation 254. Up to 95 conditions per place. [2023-08-27 02:56:11,526 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 44 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-27 02:56:11,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 57 transitions, 285 flow [2023-08-27 02:56:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:56:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:56:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 566 transitions. [2023-08-27 02:56:11,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421455938697318 [2023-08-27 02:56:11,528 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 566 transitions. [2023-08-27 02:56:11,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 566 transitions. [2023-08-27 02:56:11,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:11,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 566 transitions. [2023-08-27 02:56:11,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.33333333333333) internal successors, (566), 6 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,532 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,532 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 128 flow. Second operand 6 states and 566 transitions. [2023-08-27 02:56:11,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 57 transitions, 285 flow [2023-08-27 02:56:11,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:56:11,534 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 140 flow [2023-08-27 02:56:11,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-08-27 02:56:11,535 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-27 02:56:11,535 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 140 flow [2023-08-27 02:56:11,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:11,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:11,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 02:56:11,536 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:11,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2014908308, now seen corresponding path program 1 times [2023-08-27 02:56:11,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:11,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712344650] [2023-08-27 02:56:11,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:11,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:11,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712344650] [2023-08-27 02:56:11,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712344650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:11,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:11,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:56:11,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793385971] [2023-08-27 02:56:11,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:11,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:56:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:56:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:56:11,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 02:56:11,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:11,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 02:56:11,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:11,647 INFO L124 PetriNetUnfolderBase]: 75/218 cut-off events. [2023-08-27 02:56:11,647 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-27 02:56:11,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 218 events. 75/218 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 759 event pairs, 23 based on Foata normal form. 4/220 useless extension candidates. Maximal degree in co-relation 296. Up to 142 conditions per place. [2023-08-27 02:56:11,649 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 35 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-27 02:56:11,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 239 flow [2023-08-27 02:56:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:56:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:56:11,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-08-27 02:56:11,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2023-08-27 02:56:11,651 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-08-27 02:56:11,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-08-27 02:56:11,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:11,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-08-27 02:56:11,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,654 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,654 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 140 flow. Second operand 4 states and 402 transitions. [2023-08-27 02:56:11,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 239 flow [2023-08-27 02:56:11,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 231 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 02:56:11,656 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 136 flow [2023-08-27 02:56:11,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-27 02:56:11,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-27 02:56:11,657 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 136 flow [2023-08-27 02:56:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:11,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:11,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 02:56:11,657 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:11,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash -336602244, now seen corresponding path program 1 times [2023-08-27 02:56:11,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:11,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480611997] [2023-08-27 02:56:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:11,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:11,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480611997] [2023-08-27 02:56:11,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480611997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:11,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:11,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:56:11,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580625424] [2023-08-27 02:56:11,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:11,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:56:11,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:11,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:56:11,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:56:11,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 02:56:11,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:11,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 02:56:11,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:11,844 INFO L124 PetriNetUnfolderBase]: 85/234 cut-off events. [2023-08-27 02:56:11,844 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-27 02:56:11,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 234 events. 85/234 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 780 event pairs, 41 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 324. Up to 84 conditions per place. [2023-08-27 02:56:11,846 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 49 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2023-08-27 02:56:11,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 307 flow [2023-08-27 02:56:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:56:11,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:56:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-08-27 02:56:11,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450191570881227 [2023-08-27 02:56:11,848 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-08-27 02:56:11,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-08-27 02:56:11,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:11,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-08-27 02:56:11,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,852 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 174.0) internal successors, (1218), 7 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,852 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 136 flow. Second operand 6 states and 569 transitions. [2023-08-27 02:56:11,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 307 flow [2023-08-27 02:56:11,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 290 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 02:56:11,854 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 143 flow [2023-08-27 02:56:11,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-27 02:56:11,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-27 02:56:11,855 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 143 flow [2023-08-27 02:56:11,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:11,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:11,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 02:56:11,856 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:11,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:11,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1737667436, now seen corresponding path program 1 times [2023-08-27 02:56:11,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:11,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131577234] [2023-08-27 02:56:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:11,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:11,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:11,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131577234] [2023-08-27 02:56:11,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131577234] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:11,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:11,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:56:11,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825626335] [2023-08-27 02:56:11,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:11,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:56:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:56:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:56:11,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 02:56:11,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:11,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 02:56:11,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:11,939 INFO L124 PetriNetUnfolderBase]: 81/224 cut-off events. [2023-08-27 02:56:11,939 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-27 02:56:11,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 224 events. 81/224 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 736 event pairs, 75 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 359. Up to 206 conditions per place. [2023-08-27 02:56:11,940 INFO L140 encePairwiseOnDemand]: 172/174 looper letters, 31 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-27 02:56:11,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 203 flow [2023-08-27 02:56:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:56:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:56:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-08-27 02:56:11,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727969348659003 [2023-08-27 02:56:11,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-08-27 02:56:11,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-08-27 02:56:11,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:11,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-08-27 02:56:11,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,944 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 143 flow. Second operand 3 states and 299 transitions. [2023-08-27 02:56:11,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 203 flow [2023-08-27 02:56:11,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 36 transitions, 195 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 02:56:11,946 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 133 flow [2023-08-27 02:56:11,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-27 02:56:11,947 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-27 02:56:11,947 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 133 flow [2023-08-27 02:56:11,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:11,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:11,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:11,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:56:11,947 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:11,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1284518803, now seen corresponding path program 1 times [2023-08-27 02:56:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011367557] [2023-08-27 02:56:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:11,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:11,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:11,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:11,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011367557] [2023-08-27 02:56:11,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011367557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:12,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:12,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:56:12,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903162001] [2023-08-27 02:56:12,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:12,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:56:12,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:56:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:56:12,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 174 [2023-08-27 02:56:12,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:12,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 174 [2023-08-27 02:56:12,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:12,063 INFO L124 PetriNetUnfolderBase]: 81/224 cut-off events. [2023-08-27 02:56:12,063 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 02:56:12,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 224 events. 81/224 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 739 event pairs, 47 based on Foata normal form. 2/226 useless extension candidates. Maximal degree in co-relation 548. Up to 94 conditions per place. [2023-08-27 02:56:12,064 INFO L140 encePairwiseOnDemand]: 170/174 looper letters, 42 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-27 02:56:12,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 263 flow [2023-08-27 02:56:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:56:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:56:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-27 02:56:12,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847701149425287 [2023-08-27 02:56:12,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-27 02:56:12,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-27 02:56:12,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:12,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-27 02:56:12,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,069 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,070 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 133 flow. Second operand 4 states and 407 transitions. [2023-08-27 02:56:12,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 263 flow [2023-08-27 02:56:12,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:56:12,071 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 136 flow [2023-08-27 02:56:12,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-27 02:56:12,072 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-27 02:56:12,072 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 136 flow [2023-08-27 02:56:12,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.25) internal successors, (381), 4 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:12,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:12,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:56:12,073 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:12,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:12,073 INFO L85 PathProgramCache]: Analyzing trace with hash 514616197, now seen corresponding path program 1 times [2023-08-27 02:56:12,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:12,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609117315] [2023-08-27 02:56:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:12,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:12,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:12,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609117315] [2023-08-27 02:56:12,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609117315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:12,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:12,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:56:12,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758488307] [2023-08-27 02:56:12,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:12,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:56:12,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:56:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:56:12,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 02:56:12,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:12,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 02:56:12,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:12,337 INFO L124 PetriNetUnfolderBase]: 90/278 cut-off events. [2023-08-27 02:56:12,337 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-27 02:56:12,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 278 events. 90/278 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1115 event pairs, 16 based on Foata normal form. 1/277 useless extension candidates. Maximal degree in co-relation 684. Up to 80 conditions per place. [2023-08-27 02:56:12,339 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 25 selfloop transitions, 2 changer transitions 36/68 dead transitions. [2023-08-27 02:56:12,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 375 flow [2023-08-27 02:56:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:56:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:56:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 660 transitions. [2023-08-27 02:56:12,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541871921182266 [2023-08-27 02:56:12,341 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 660 transitions. [2023-08-27 02:56:12,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 660 transitions. [2023-08-27 02:56:12,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:12,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 660 transitions. [2023-08-27 02:56:12,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.28571428571429) internal successors, (660), 7 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,345 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 136 flow. Second operand 7 states and 660 transitions. [2023-08-27 02:56:12,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 375 flow [2023-08-27 02:56:12,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 355 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 02:56:12,347 INFO L231 Difference]: Finished difference. Result has 53 places, 31 transitions, 112 flow [2023-08-27 02:56:12,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2023-08-27 02:56:12,348 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-27 02:56:12,348 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 112 flow [2023-08-27 02:56:12,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:56:12,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:12,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:56:12,349 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 02:56:12,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:56:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash -985041799, now seen corresponding path program 2 times [2023-08-27 02:56:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:56:12,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520541484] [2023-08-27 02:56:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:56:12,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:56:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:56:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:56:12,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:56:12,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520541484] [2023-08-27 02:56:12,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520541484] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:56:12,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:56:12,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 02:56:12,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364938577] [2023-08-27 02:56:12,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:56:12,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:56:12,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:56:12,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:56:12,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:56:12,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 174 [2023-08-27 02:56:12,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:56:12,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 174 [2023-08-27 02:56:12,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:56:12,554 INFO L124 PetriNetUnfolderBase]: 35/119 cut-off events. [2023-08-27 02:56:12,554 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-27 02:56:12,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 119 events. 35/119 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 292 event pairs, 8 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 279. Up to 51 conditions per place. [2023-08-27 02:56:12,555 INFO L140 encePairwiseOnDemand]: 168/174 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-27 02:56:12,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 37 transitions, 189 flow [2023-08-27 02:56:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:56:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:56:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 632 transitions. [2023-08-27 02:56:12,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188834154351396 [2023-08-27 02:56:12,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 632 transitions. [2023-08-27 02:56:12,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 632 transitions. [2023-08-27 02:56:12,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:56:12,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 632 transitions. [2023-08-27 02:56:12,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 174.0) internal successors, (1392), 8 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,561 INFO L175 Difference]: Start difference. First operand has 53 places, 31 transitions, 112 flow. Second operand 7 states and 632 transitions. [2023-08-27 02:56:12,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 37 transitions, 189 flow [2023-08-27 02:56:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 179 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-27 02:56:12,562 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-27 02:56:12,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, 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=7, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-27 02:56:12,563 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-27 02:56:12,563 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-27 02:56:12,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:56:12,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 02:56:12,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 02:56:12,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 02:56:12,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 02:56:12,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 02:56:12,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 02:56:12,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 02:56:12,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 02:56:12,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 02:56:12,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 02:56:12,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:56:12,568 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:56:12,571 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:56:12,571 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:56:12,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:56:12 BasicIcfg [2023-08-27 02:56:12,574 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:56:12,574 INFO L158 Benchmark]: Toolchain (without parser) took 6975.84ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 323.2MB in the beginning and 229.5MB in the end (delta: 93.7MB). Peak memory consumption was 165.3MB. Max. memory is 16.0GB. [2023-08-27 02:56:12,574 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 348.1MB. Free memory is still 324.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:56:12,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.53ms. Allocated memory is still 348.1MB. Free memory was 322.9MB in the beginning and 303.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 02:56:12,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.37ms. Allocated memory is still 348.1MB. Free memory was 303.4MB in the beginning and 301.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:56:12,575 INFO L158 Benchmark]: Boogie Preprocessor took 21.53ms. Allocated memory is still 348.1MB. Free memory was 301.3MB in the beginning and 299.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:56:12,575 INFO L158 Benchmark]: RCFGBuilder took 383.93ms. Allocated memory is still 348.1MB. Free memory was 299.8MB in the beginning and 284.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 02:56:12,575 INFO L158 Benchmark]: TraceAbstraction took 6059.66ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 283.8MB in the beginning and 229.5MB in the end (delta: 54.3MB). Peak memory consumption was 127.6MB. Max. memory is 16.0GB. [2023-08-27 02:56:12,576 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 348.1MB. Free memory is still 324.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 459.53ms. Allocated memory is still 348.1MB. Free memory was 322.9MB in the beginning and 303.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.37ms. Allocated memory is still 348.1MB. Free memory was 303.4MB in the beginning and 301.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.53ms. Allocated memory is still 348.1MB. Free memory was 301.3MB in the beginning and 299.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 383.93ms. Allocated memory is still 348.1MB. Free memory was 299.8MB in the beginning and 284.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 6059.66ms. Allocated memory was 348.1MB in the beginning and 419.4MB in the end (delta: 71.3MB). Free memory was 283.8MB in the beginning and 229.5MB in the end (delta: 54.3MB). Peak memory consumption was 127.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] - GenericResultAtLocation [Line: 257]: Unsoundness Warning unspecified type, defaulting to int C: short [257] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 102 PlacesBefore, 42 PlacesAfterwards, 95 TransitionsBefore, 35 TransitionsAfterwards, 1516 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 6588 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3448, independent: 3133, independent conditional: 0, independent unconditional: 3133, dependent: 315, dependent conditional: 0, dependent unconditional: 315, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 851, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3448, independent: 2319, independent conditional: 0, independent unconditional: 2319, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 851, unknown conditional: 0, unknown unconditional: 851] , Statistics on independence cache: Total cache size (in pairs): 210, Positive cache size: 189, Positive conditional cache size: 0, Positive unconditional cache size: 189, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 697]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 700]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 710]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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, 154 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 222 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 964 IncrementalHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 4 mSDtfsCounter, 964 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=9, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 677 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 02:56:12,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...