/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 PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 15:21:55,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 15:21:55,330 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 15:21:55,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 15:21:55,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 15:21:55,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 15:21:55,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 15:21:55,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 15:21:55,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 15:21:55,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 15:21:55,371 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 15:21:55,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 15:21:55,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 15:21:55,373 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 15:21:55,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 15:21:55,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 15:21:55,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 15:21:55,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 15:21:55,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 15:21:55,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 15:21:55,375 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 15:21:55,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 15:21:55,376 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 15:21:55,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 15:21:55,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 15:21:55,377 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 15:21:55,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 15:21:55,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:21:55,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 15:21:55,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 15:21:55,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 15:21:55,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 15:21:55,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 15:21:55,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 15:21:55,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 15:21:55,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 15:21:55,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 15:21:55,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 15:21:55,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 15:21:55,730 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 15:21:55,730 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 15:21:55,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-27 15:21:56,936 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 15:21:57,162 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 15:21:57,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-27 15:21:57,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc9c8f117/0df77b9b86d14da59a11b24768d160a1/FLAGa7e068d39 [2023-08-27 15:21:57,183 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc9c8f117/0df77b9b86d14da59a11b24768d160a1 [2023-08-27 15:21:57,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 15:21:57,187 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 15:21:57,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 15:21:57,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 15:21:57,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 15:21:57,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59f394dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57, skipping insertion in model container [2023-08-27 15:21:57,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,211 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 15:21:57,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:21:57,342 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 15:21:57,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:21:57,390 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 15:21:57,391 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 15:21:57,401 INFO L206 MainTranslator]: Completed translation [2023-08-27 15:21:57,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57 WrapperNode [2023-08-27 15:21:57,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 15:21:57,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 15:21:57,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 15:21:57,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 15:21:57,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,451 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 133 [2023-08-27 15:21:57,452 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 15:21:57,453 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 15:21:57,453 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 15:21:57,453 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 15:21:57,461 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 15:21:57,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 15:21:57,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 15:21:57,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 15:21:57,486 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (1/1) ... [2023-08-27 15:21:57,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:21:57,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:21:57,523 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 15:21:57,542 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 15:21:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 15:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 15:21:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 15:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 15:21:57,561 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 15:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 15:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 15:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 15:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 15:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 15:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 15:21:57,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 15:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 15:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 15:21:57,563 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 15:21:57,640 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 15:21:57,642 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 15:21:57,901 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 15:21:57,961 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 15:21:57,961 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 15:21:57,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:57 BoogieIcfgContainer [2023-08-27 15:21:57,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 15:21:57,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 15:21:57,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 15:21:57,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 15:21:57,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:21:57" (1/3) ... [2023-08-27 15:21:57,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bb5dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:21:57, skipping insertion in model container [2023-08-27 15:21:57,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:57" (2/3) ... [2023-08-27 15:21:57,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bb5dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:21:57, skipping insertion in model container [2023-08-27 15:21:57,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:57" (3/3) ... [2023-08-27 15:21:57,970 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-08-27 15:21:57,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 15:21:57,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 15:21:57,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 15:21:58,074 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 15:21:58,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 87 transitions, 190 flow [2023-08-27 15:21:58,185 INFO L124 PetriNetUnfolderBase]: 1/85 cut-off events. [2023-08-27 15:21:58,186 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 15:21:58,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 1/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-27 15:21:58,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 87 transitions, 190 flow [2023-08-27 15:21:58,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 76 transitions, 164 flow [2023-08-27 15:21:58,198 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 15:21:58,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 76 transitions, 164 flow [2023-08-27 15:21:58,216 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 76 transitions, 164 flow [2023-08-27 15:21:58,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 76 transitions, 164 flow [2023-08-27 15:21:58,245 INFO L124 PetriNetUnfolderBase]: 1/76 cut-off events. [2023-08-27 15:21:58,246 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 15:21:58,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 76 events. 1/76 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-08-27 15:21:58,248 INFO L119 LiptonReduction]: Number of co-enabled transitions 900 [2023-08-27 15:22:00,029 INFO L134 LiptonReduction]: Checked pairs total: 5750 [2023-08-27 15:22:00,029 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-27 15:22:00,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 15:22:00,046 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;@ea37a83, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 15:22:00,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 15:22:00,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 15:22:00,049 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 15:22:00,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 15:22:00,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:00,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 15:22:00,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:00,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:00,054 INFO L85 PathProgramCache]: Analyzing trace with hash 11639393, now seen corresponding path program 1 times [2023-08-27 15:22:00,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:00,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928096416] [2023-08-27 15:22:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:00,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:00,238 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 15:22:00,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:00,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928096416] [2023-08-27 15:22:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928096416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:00,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:00,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:22:00,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027674696] [2023-08-27 15:22:00,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:00,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:22:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:00,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:22:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:22:00,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 15:22:00,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:00,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 15:22:00,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:00,425 INFO L124 PetriNetUnfolderBase]: 301/615 cut-off events. [2023-08-27 15:22:00,426 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 15:22:00,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 615 events. 301/615 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3136 event pairs, 127 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 1095. Up to 339 conditions per place. [2023-08-27 15:22:00,433 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-27 15:22:00,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 185 flow [2023-08-27 15:22:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:22:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:22:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-27 15:22:00,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-08-27 15:22:00,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-27 15:22:00,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-27 15:22:00,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:00,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-27 15:22:00,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,459 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,461 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 82 flow. Second operand 3 states and 239 transitions. [2023-08-27 15:22:00,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 185 flow [2023-08-27 15:22:00,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 175 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 15:22:00,466 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 87 flow [2023-08-27 15:22:00,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-08-27 15:22:00,470 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-27 15:22:00,470 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 87 flow [2023-08-27 15:22:00,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:00,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 15:22:00,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 15:22:00,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:00,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1697047311, now seen corresponding path program 1 times [2023-08-27 15:22:00,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:00,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009886569] [2023-08-27 15:22:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:00,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:00,534 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 15:22:00,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:00,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009886569] [2023-08-27 15:22:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009886569] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:00,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:00,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:22:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946528213] [2023-08-27 15:22:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:00,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:22:00,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:00,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:22:00,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:22:00,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 15:22:00,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:00,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 15:22:00,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:00,648 INFO L124 PetriNetUnfolderBase]: 281/582 cut-off events. [2023-08-27 15:22:00,648 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-08-27 15:22:00,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 582 events. 281/582 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3030 event pairs, 107 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 396. Up to 339 conditions per place. [2023-08-27 15:22:00,652 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-27 15:22:00,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 194 flow [2023-08-27 15:22:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:22:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:22:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-27 15:22:00,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-08-27 15:22:00,655 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-27 15:22:00,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-27 15:22:00,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:00,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-27 15:22:00,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,658 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 87 flow. Second operand 3 states and 239 transitions. [2023-08-27 15:22:00,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 194 flow [2023-08-27 15:22:00,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:22:00,660 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 94 flow [2023-08-27 15:22:00,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-27 15:22:00,661 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-27 15:22:00,661 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 94 flow [2023-08-27 15:22:00,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:00,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:00,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 15:22:00,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:00,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash -677361917, now seen corresponding path program 1 times [2023-08-27 15:22:00,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:00,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247974004] [2023-08-27 15:22:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:00,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:00,789 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 15:22:00,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:00,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247974004] [2023-08-27 15:22:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247974004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:00,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750184478] [2023-08-27 15:22:00,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:00,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:00,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:00,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:00,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:00,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 15:22:00,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:00,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 15:22:00,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:00,970 INFO L124 PetriNetUnfolderBase]: 441/895 cut-off events. [2023-08-27 15:22:00,970 INFO L125 PetriNetUnfolderBase]: For 132/133 co-relation queries the response was YES. [2023-08-27 15:22:00,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 895 events. 441/895 cut-off events. For 132/133 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4901 event pairs, 95 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 465. Up to 270 conditions per place. [2023-08-27 15:22:00,976 INFO L140 encePairwiseOnDemand]: 132/141 looper letters, 63 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-08-27 15:22:00,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 81 transitions, 358 flow [2023-08-27 15:22:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:22:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:22:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-08-27 15:22:00,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096251266464032 [2023-08-27 15:22:00,979 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-08-27 15:22:00,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-08-27 15:22:00,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:00,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-08-27 15:22:00,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,985 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 94 flow. Second operand 7 states and 503 transitions. [2023-08-27 15:22:00,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 81 transitions, 358 flow [2023-08-27 15:22:00,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:22:00,988 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 159 flow [2023-08-27 15:22:00,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-27 15:22:00,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-27 15:22:00,989 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 159 flow [2023-08-27 15:22:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:00,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:00,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:00,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 15:22:00,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:00,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash -404899936, now seen corresponding path program 1 times [2023-08-27 15:22:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:00,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429810665] [2023-08-27 15:22:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:01,051 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 15:22:01,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429810665] [2023-08-27 15:22:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429810665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:01,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:01,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:01,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669635737] [2023-08-27 15:22:01,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:01,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:01,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:01,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:01,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 15:22:01,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:01,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 15:22:01,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:01,218 INFO L124 PetriNetUnfolderBase]: 424/864 cut-off events. [2023-08-27 15:22:01,218 INFO L125 PetriNetUnfolderBase]: For 487/488 co-relation queries the response was YES. [2023-08-27 15:22:01,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 864 events. 424/864 cut-off events. For 487/488 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4655 event pairs, 24 based on Foata normal form. 13/789 useless extension candidates. Maximal degree in co-relation 1726. Up to 303 conditions per place. [2023-08-27 15:22:01,224 INFO L140 encePairwiseOnDemand]: 132/141 looper letters, 65 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2023-08-27 15:22:01,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 426 flow [2023-08-27 15:22:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:22:01,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:22:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 506 transitions. [2023-08-27 15:22:01,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126646403242148 [2023-08-27 15:22:01,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 506 transitions. [2023-08-27 15:22:01,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 506 transitions. [2023-08-27 15:22:01,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:01,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 506 transitions. [2023-08-27 15:22:01,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.28571428571429) internal successors, (506), 7 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,230 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,231 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 159 flow. Second operand 7 states and 506 transitions. [2023-08-27 15:22:01,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 426 flow [2023-08-27 15:22:01,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 85 transitions, 401 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 15:22:01,237 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 184 flow [2023-08-27 15:22:01,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=184, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-08-27 15:22:01,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 15:22:01,238 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 184 flow [2023-08-27 15:22:01,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:01,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:01,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 15:22:01,239 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:01,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1840568342, now seen corresponding path program 1 times [2023-08-27 15:22:01,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:01,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880954593] [2023-08-27 15:22:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:01,296 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 15:22:01,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880954593] [2023-08-27 15:22:01,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880954593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:01,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:01,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:01,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102765380] [2023-08-27 15:22:01,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:01,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:01,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:01,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:01,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:01,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 15:22:01,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:01,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 15:22:01,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:01,482 INFO L124 PetriNetUnfolderBase]: 559/1147 cut-off events. [2023-08-27 15:22:01,482 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2023-08-27 15:22:01,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 1147 events. 559/1147 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6698 event pairs, 67 based on Foata normal form. 0/1029 useless extension candidates. Maximal degree in co-relation 2124. Up to 348 conditions per place. [2023-08-27 15:22:01,489 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 64 selfloop transitions, 18 changer transitions 0/88 dead transitions. [2023-08-27 15:22:01,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 462 flow [2023-08-27 15:22:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:22:01,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:22:01,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-08-27 15:22:01,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096251266464032 [2023-08-27 15:22:01,491 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-08-27 15:22:01,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-08-27 15:22:01,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:01,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-08-27 15:22:01,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,495 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,495 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 184 flow. Second operand 7 states and 503 transitions. [2023-08-27 15:22:01,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 462 flow [2023-08-27 15:22:01,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 408 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-08-27 15:22:01,501 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 240 flow [2023-08-27 15:22:01,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-27 15:22:01,502 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-08-27 15:22:01,502 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 240 flow [2023-08-27 15:22:01,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:01,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:01,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 15:22:01,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:01,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash -676868069, now seen corresponding path program 1 times [2023-08-27 15:22:01,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:01,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766816709] [2023-08-27 15:22:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:01,547 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 15:22:01,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766816709] [2023-08-27 15:22:01,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766816709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:01,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:01,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:01,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198916468] [2023-08-27 15:22:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:01,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:01,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:01,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 15:22:01,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:01,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 15:22:01,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:01,716 INFO L124 PetriNetUnfolderBase]: 542/1108 cut-off events. [2023-08-27 15:22:01,716 INFO L125 PetriNetUnfolderBase]: For 727/729 co-relation queries the response was YES. [2023-08-27 15:22:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2722 conditions, 1108 events. 542/1108 cut-off events. For 727/729 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6463 event pairs, 170 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 1469. Up to 468 conditions per place. [2023-08-27 15:22:01,742 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 65 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2023-08-27 15:22:01,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 477 flow [2023-08-27 15:22:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:22:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:22:01,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 500 transitions. [2023-08-27 15:22:01,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065856129685917 [2023-08-27 15:22:01,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 500 transitions. [2023-08-27 15:22:01,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 500 transitions. [2023-08-27 15:22:01,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:01,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 500 transitions. [2023-08-27 15:22:01,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.42857142857143) internal successors, (500), 7 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,747 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,747 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 240 flow. Second operand 7 states and 500 transitions. [2023-08-27 15:22:01,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 477 flow [2023-08-27 15:22:01,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 477 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 15:22:01,752 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 267 flow [2023-08-27 15:22:01,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-08-27 15:22:01,752 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 15:22:01,753 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 267 flow [2023-08-27 15:22:01,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:01,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:01,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 15:22:01,753 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:01,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash -476853759, now seen corresponding path program 1 times [2023-08-27 15:22:01,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:01,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916088711] [2023-08-27 15:22:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:01,785 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 15:22:01,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:01,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916088711] [2023-08-27 15:22:01,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916088711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:01,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:01,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:22:01,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440976151] [2023-08-27 15:22:01,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:01,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:22:01,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:22:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:22:01,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 141 [2023-08-27 15:22:01,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:01,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 141 [2023-08-27 15:22:01,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:01,882 INFO L124 PetriNetUnfolderBase]: 434/851 cut-off events. [2023-08-27 15:22:01,882 INFO L125 PetriNetUnfolderBase]: For 1116/1129 co-relation queries the response was YES. [2023-08-27 15:22:01,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2369 conditions, 851 events. 434/851 cut-off events. For 1116/1129 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4393 event pairs, 198 based on Foata normal form. 13/786 useless extension candidates. Maximal degree in co-relation 1273. Up to 529 conditions per place. [2023-08-27 15:22:01,887 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-27 15:22:01,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 463 flow [2023-08-27 15:22:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:22:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:22:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-27 15:22:01,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-27 15:22:01,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-27 15:22:01,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-27 15:22:01,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:01,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-27 15:22:01,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,891 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 267 flow. Second operand 3 states and 237 transitions. [2023-08-27 15:22:01,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 463 flow [2023-08-27 15:22:01,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 395 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 15:22:01,895 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 240 flow [2023-08-27 15:22:01,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-27 15:22:01,896 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-27 15:22:01,896 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 240 flow [2023-08-27 15:22:01,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:01,897 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 15:22:01,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 15:22:01,897 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:01,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1245195614, now seen corresponding path program 1 times [2023-08-27 15:22:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14213504] [2023-08-27 15:22:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:01,955 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 15:22:01,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:01,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14213504] [2023-08-27 15:22:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14213504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:01,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:01,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:01,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145939256] [2023-08-27 15:22:01,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:01,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:01,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:01,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 15:22:01,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:01,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:01,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 15:22:01,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:02,090 INFO L124 PetriNetUnfolderBase]: 464/959 cut-off events. [2023-08-27 15:22:02,090 INFO L125 PetriNetUnfolderBase]: For 706/719 co-relation queries the response was YES. [2023-08-27 15:22:02,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 959 events. 464/959 cut-off events. For 706/719 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5244 event pairs, 162 based on Foata normal form. 13/942 useless extension candidates. Maximal degree in co-relation 812. Up to 296 conditions per place. [2023-08-27 15:22:02,096 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 88 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-08-27 15:22:02,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 709 flow [2023-08-27 15:22:02,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:22:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:22:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2023-08-27 15:22:02,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5118203309692672 [2023-08-27 15:22:02,098 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2023-08-27 15:22:02,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2023-08-27 15:22:02,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:02,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2023-08-27 15:22:02,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,101 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 240 flow. Second operand 6 states and 433 transitions. [2023-08-27 15:22:02,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 709 flow [2023-08-27 15:22:02,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:22:02,105 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 265 flow [2023-08-27 15:22:02,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-27 15:22:02,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-27 15:22:02,106 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 265 flow [2023-08-27 15:22:02,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:02,106 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 15:22:02,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 15:22:02,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:02,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash 698289565, now seen corresponding path program 1 times [2023-08-27 15:22:02,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:02,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654555500] [2023-08-27 15:22:02,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:02,162 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 15:22:02,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:02,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654555500] [2023-08-27 15:22:02,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654555500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:02,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:02,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493289125] [2023-08-27 15:22:02,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:02,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:02,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:02,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 15:22:02,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 265 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:02,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 15:22:02,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:02,289 INFO L124 PetriNetUnfolderBase]: 446/923 cut-off events. [2023-08-27 15:22:02,289 INFO L125 PetriNetUnfolderBase]: For 927/940 co-relation queries the response was YES. [2023-08-27 15:22:02,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 923 events. 446/923 cut-off events. For 927/940 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5001 event pairs, 150 based on Foata normal form. 31/924 useless extension candidates. Maximal degree in co-relation 828. Up to 293 conditions per place. [2023-08-27 15:22:02,295 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 87 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2023-08-27 15:22:02,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 726 flow [2023-08-27 15:22:02,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:22:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:22:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 432 transitions. [2023-08-27 15:22:02,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-08-27 15:22:02,297 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 432 transitions. [2023-08-27 15:22:02,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 432 transitions. [2023-08-27 15:22:02,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:02,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 432 transitions. [2023-08-27 15:22:02,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,300 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,301 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 265 flow. Second operand 6 states and 432 transitions. [2023-08-27 15:22:02,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 726 flow [2023-08-27 15:22:02,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 712 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 15:22:02,305 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 263 flow [2023-08-27 15:22:02,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2023-08-27 15:22:02,305 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-27 15:22:02,306 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 263 flow [2023-08-27 15:22:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:02,306 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 15:22:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 15:22:02,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:02,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1900479339, now seen corresponding path program 1 times [2023-08-27 15:22:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949419304] [2023-08-27 15:22:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:02,360 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 15:22:02,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:02,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949419304] [2023-08-27 15:22:02,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949419304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:02,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:02,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669796198] [2023-08-27 15:22:02,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:02,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:02,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:02,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:02,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:02,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 15:22:02,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:02,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 15:22:02,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:02,495 INFO L124 PetriNetUnfolderBase]: 470/995 cut-off events. [2023-08-27 15:22:02,495 INFO L125 PetriNetUnfolderBase]: For 1005/1018 co-relation queries the response was YES. [2023-08-27 15:22:02,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 995 events. 470/995 cut-off events. For 1005/1018 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5554 event pairs, 164 based on Foata normal form. 13/978 useless extension candidates. Maximal degree in co-relation 920. Up to 314 conditions per place. [2023-08-27 15:22:02,501 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 84 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2023-08-27 15:22:02,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 696 flow [2023-08-27 15:22:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:22:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:22:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 366 transitions. [2023-08-27 15:22:02,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2023-08-27 15:22:02,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 366 transitions. [2023-08-27 15:22:02,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 366 transitions. [2023-08-27 15:22:02,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:02,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 366 transitions. [2023-08-27 15:22:02,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,507 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 263 flow. Second operand 5 states and 366 transitions. [2023-08-27 15:22:02,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 696 flow [2023-08-27 15:22:02,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 680 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 15:22:02,511 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 273 flow [2023-08-27 15:22:02,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-08-27 15:22:02,512 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-27 15:22:02,512 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 273 flow [2023-08-27 15:22:02,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:02,513 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 15:22:02,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 15:22:02,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:02,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1900479340, now seen corresponding path program 1 times [2023-08-27 15:22:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:02,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371466861] [2023-08-27 15:22:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:02,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:02,568 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 15:22:02,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371466861] [2023-08-27 15:22:02,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371466861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:02,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:02,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332859679] [2023-08-27 15:22:02,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:02,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:02,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:02,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:02,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 141 [2023-08-27 15:22:02,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:02,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 141 [2023-08-27 15:22:02,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:02,721 INFO L124 PetriNetUnfolderBase]: 458/971 cut-off events. [2023-08-27 15:22:02,721 INFO L125 PetriNetUnfolderBase]: For 1057/1070 co-relation queries the response was YES. [2023-08-27 15:22:02,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3068 conditions, 971 events. 458/971 cut-off events. For 1057/1070 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5413 event pairs, 158 based on Foata normal form. 13/966 useless extension candidates. Maximal degree in co-relation 914. Up to 314 conditions per place. [2023-08-27 15:22:02,726 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 83 selfloop transitions, 7 changer transitions 0/98 dead transitions. [2023-08-27 15:22:02,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 696 flow [2023-08-27 15:22:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:22:02,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:22:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 365 transitions. [2023-08-27 15:22:02,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2023-08-27 15:22:02,728 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 365 transitions. [2023-08-27 15:22:02,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 365 transitions. [2023-08-27 15:22:02,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:02,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 365 transitions. [2023-08-27 15:22:02,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.0) internal successors, (365), 5 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,731 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 273 flow. Second operand 5 states and 365 transitions. [2023-08-27 15:22:02,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 696 flow [2023-08-27 15:22:02,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 686 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 15:22:02,735 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 272 flow [2023-08-27 15:22:02,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2023-08-27 15:22:02,736 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-08-27 15:22:02,736 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 272 flow [2023-08-27 15:22:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 5 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:02,736 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 15:22:02,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 15:22:02,737 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:02,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 311141689, now seen corresponding path program 1 times [2023-08-27 15:22:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435049272] [2023-08-27 15:22:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:02,813 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 15:22:02,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:02,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435049272] [2023-08-27 15:22:02,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435049272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:02,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:02,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:02,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354759806] [2023-08-27 15:22:02,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:02,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:22:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:02,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:22:02,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:22:02,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 15:22:02,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:02,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 15:22:02,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:02,904 INFO L124 PetriNetUnfolderBase]: 392/908 cut-off events. [2023-08-27 15:22:02,904 INFO L125 PetriNetUnfolderBase]: For 1245/1256 co-relation queries the response was YES. [2023-08-27 15:22:02,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2846 conditions, 908 events. 392/908 cut-off events. For 1245/1256 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5254 event pairs, 278 based on Foata normal form. 21/911 useless extension candidates. Maximal degree in co-relation 811. Up to 742 conditions per place. [2023-08-27 15:22:02,910 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 50 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-27 15:22:02,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 433 flow [2023-08-27 15:22:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:22:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:22:02,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-27 15:22:02,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-08-27 15:22:02,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-27 15:22:02,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-27 15:22:02,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:02,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-27 15:22:02,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,913 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,913 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 272 flow. Second operand 3 states and 227 transitions. [2023-08-27 15:22:02,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 433 flow [2023-08-27 15:22:02,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 417 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 15:22:02,917 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 266 flow [2023-08-27 15:22:02,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2023-08-27 15:22:02,917 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-27 15:22:02,918 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 266 flow [2023-08-27 15:22:02,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:02,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:02,918 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 15:22:02,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 15:22:02,918 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:02,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1672477219, now seen corresponding path program 2 times [2023-08-27 15:22:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:02,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525722697] [2023-08-27 15:22:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:02,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:03,052 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 15:22:03,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:03,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525722697] [2023-08-27 15:22:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525722697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:22:03,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133930295] [2023-08-27 15:22:03,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:03,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:22:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:22:03,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:22:03,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 15:22:03,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 266 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:03,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 15:22:03,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:03,243 INFO L124 PetriNetUnfolderBase]: 451/958 cut-off events. [2023-08-27 15:22:03,243 INFO L125 PetriNetUnfolderBase]: For 887/899 co-relation queries the response was YES. [2023-08-27 15:22:03,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2986 conditions, 958 events. 451/958 cut-off events. For 887/899 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5289 event pairs, 141 based on Foata normal form. 15/954 useless extension candidates. Maximal degree in co-relation 923. Up to 283 conditions per place. [2023-08-27 15:22:03,248 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 74 selfloop transitions, 6 changer transitions 31/119 dead transitions. [2023-08-27 15:22:03,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 850 flow [2023-08-27 15:22:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:22:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:22:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 488 transitions. [2023-08-27 15:22:03,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49442755825734547 [2023-08-27 15:22:03,250 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 488 transitions. [2023-08-27 15:22:03,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 488 transitions. [2023-08-27 15:22:03,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:03,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 488 transitions. [2023-08-27 15:22:03,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,255 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 266 flow. Second operand 7 states and 488 transitions. [2023-08-27 15:22:03,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 850 flow [2023-08-27 15:22:03,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 119 transitions, 846 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:22:03,259 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 258 flow [2023-08-27 15:22:03,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=258, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-08-27 15:22:03,260 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 15:22:03,260 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 258 flow [2023-08-27 15:22:03,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:03,261 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 15:22:03,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 15:22:03,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:03,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash -2077492713, now seen corresponding path program 3 times [2023-08-27 15:22:03,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:03,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291694522] [2023-08-27 15:22:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:03,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:03,455 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 15:22:03,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:03,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291694522] [2023-08-27 15:22:03,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291694522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:03,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:03,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 15:22:03,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630410212] [2023-08-27 15:22:03,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:03,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:22:03,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:03,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:22:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:22:03,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 15:22:03,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 258 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:03,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 15:22:03,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:03,670 INFO L124 PetriNetUnfolderBase]: 354/854 cut-off events. [2023-08-27 15:22:03,670 INFO L125 PetriNetUnfolderBase]: For 1052/1055 co-relation queries the response was YES. [2023-08-27 15:22:03,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 854 events. 354/854 cut-off events. For 1052/1055 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4918 event pairs, 56 based on Foata normal form. 10/852 useless extension candidates. Maximal degree in co-relation 2619. Up to 427 conditions per place. [2023-08-27 15:22:03,674 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 65 selfloop transitions, 11 changer transitions 8/91 dead transitions. [2023-08-27 15:22:03,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 611 flow [2023-08-27 15:22:03,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:22:03,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:22:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 541 transitions. [2023-08-27 15:22:03,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796099290780142 [2023-08-27 15:22:03,677 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 541 transitions. [2023-08-27 15:22:03,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 541 transitions. [2023-08-27 15:22:03,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:03,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 541 transitions. [2023-08-27 15:22:03,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.625) internal successors, (541), 8 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,681 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,681 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 258 flow. Second operand 8 states and 541 transitions. [2023-08-27 15:22:03,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 611 flow [2023-08-27 15:22:03,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 562 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-27 15:22:03,685 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 263 flow [2023-08-27 15:22:03,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-08-27 15:22:03,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 15:22:03,686 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 263 flow [2023-08-27 15:22:03,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:03,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:03,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 15:22:03,713 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:03,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1099517577, now seen corresponding path program 4 times [2023-08-27 15:22:03,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:03,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316231541] [2023-08-27 15:22:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:03,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:03,842 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 15:22:03,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:03,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316231541] [2023-08-27 15:22:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316231541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:03,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:03,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 15:22:03,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37785483] [2023-08-27 15:22:03,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:03,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:22:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:03,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:22:03,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:22:03,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 15:22:03,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 263 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:03,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:03,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 15:22:03,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:04,030 INFO L124 PetriNetUnfolderBase]: 274/672 cut-off events. [2023-08-27 15:22:04,030 INFO L125 PetriNetUnfolderBase]: For 829/832 co-relation queries the response was YES. [2023-08-27 15:22:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 672 events. 274/672 cut-off events. For 829/832 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3589 event pairs, 32 based on Foata normal form. 10/676 useless extension candidates. Maximal degree in co-relation 811. Up to 148 conditions per place. [2023-08-27 15:22:04,034 INFO L140 encePairwiseOnDemand]: 133/141 looper letters, 57 selfloop transitions, 11 changer transitions 16/91 dead transitions. [2023-08-27 15:22:04,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 581 flow [2023-08-27 15:22:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 15:22:04,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 15:22:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 604 transitions. [2023-08-27 15:22:04,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47596532702915684 [2023-08-27 15:22:04,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 604 transitions. [2023-08-27 15:22:04,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 604 transitions. [2023-08-27 15:22:04,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:04,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 604 transitions. [2023-08-27 15:22:04,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.11111111111111) internal successors, (604), 9 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,040 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 141.0) internal successors, (1410), 10 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,040 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 263 flow. Second operand 9 states and 604 transitions. [2023-08-27 15:22:04,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 581 flow [2023-08-27 15:22:04,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 529 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-08-27 15:22:04,044 INFO L231 Difference]: Finished difference. Result has 65 places, 41 transitions, 198 flow [2023-08-27 15:22:04,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=41} [2023-08-27 15:22:04,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-27 15:22:04,045 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 41 transitions, 198 flow [2023-08-27 15:22:04,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:04,045 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 15:22:04,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 15:22:04,045 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:04,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1910246865, now seen corresponding path program 5 times [2023-08-27 15:22:04,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:04,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962973790] [2023-08-27 15:22:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:04,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:22:04,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962973790] [2023-08-27 15:22:04,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962973790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:04,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:04,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 15:22:04,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623605143] [2023-08-27 15:22:04,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:04,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:22:04,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:22:04,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:22:04,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 141 [2023-08-27 15:22:04,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 41 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:04,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 141 [2023-08-27 15:22:04,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:04,180 INFO L124 PetriNetUnfolderBase]: 213/519 cut-off events. [2023-08-27 15:22:04,181 INFO L125 PetriNetUnfolderBase]: For 755/760 co-relation queries the response was YES. [2023-08-27 15:22:04,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 519 events. 213/519 cut-off events. For 755/760 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2465 event pairs, 162 based on Foata normal form. 10/517 useless extension candidates. Maximal degree in co-relation 1124. Up to 416 conditions per place. [2023-08-27 15:22:04,183 INFO L140 encePairwiseOnDemand]: 138/141 looper letters, 40 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-27 15:22:04,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 329 flow [2023-08-27 15:22:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:22:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:22:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-27 15:22:04,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2023-08-27 15:22:04,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-27 15:22:04,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-27 15:22:04,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:04,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-27 15:22:04,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,187 INFO L175 Difference]: Start difference. First operand has 65 places, 41 transitions, 198 flow. Second operand 3 states and 227 transitions. [2023-08-27 15:22:04,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 329 flow [2023-08-27 15:22:04,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 282 flow, removed 3 selfloop flow, removed 10 redundant places. [2023-08-27 15:22:04,189 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 169 flow [2023-08-27 15:22:04,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-27 15:22:04,190 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-27 15:22:04,190 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 169 flow [2023-08-27 15:22:04,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:04,190 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 15:22:04,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 15:22:04,190 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:04,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:04,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1868847385, now seen corresponding path program 6 times [2023-08-27 15:22:04,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:04,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96746511] [2023-08-27 15:22:04,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:04,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:04,316 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 15:22:04,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96746511] [2023-08-27 15:22:04,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96746511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:04,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:04,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 15:22:04,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475611175] [2023-08-27 15:22:04,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:04,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:22:04,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:22:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:22:04,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 15:22:04,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:04,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 15:22:04,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:04,467 INFO L124 PetriNetUnfolderBase]: 144/360 cut-off events. [2023-08-27 15:22:04,467 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2023-08-27 15:22:04,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 360 events. 144/360 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1533 event pairs, 36 based on Foata normal form. 8/361 useless extension candidates. Maximal degree in co-relation 335. Up to 213 conditions per place. [2023-08-27 15:22:04,469 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 39 selfloop transitions, 5 changer transitions 10/61 dead transitions. [2023-08-27 15:22:04,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 337 flow [2023-08-27 15:22:04,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:22:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:22:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 403 transitions. [2023-08-27 15:22:04,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635933806146574 [2023-08-27 15:22:04,471 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 403 transitions. [2023-08-27 15:22:04,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 403 transitions. [2023-08-27 15:22:04,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:04,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 403 transitions. [2023-08-27 15:22:04,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,474 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,474 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 169 flow. Second operand 6 states and 403 transitions. [2023-08-27 15:22:04,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 337 flow [2023-08-27 15:22:04,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 15:22:04,476 INFO L231 Difference]: Finished difference. Result has 56 places, 38 transitions, 161 flow [2023-08-27 15:22:04,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=38} [2023-08-27 15:22:04,477 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-08-27 15:22:04,477 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 38 transitions, 161 flow [2023-08-27 15:22:04,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:04,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:04,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 15:22:04,477 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:04,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:04,478 INFO L85 PathProgramCache]: Analyzing trace with hash -206405261, now seen corresponding path program 7 times [2023-08-27 15:22:04,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:04,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257975677] [2023-08-27 15:22:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:04,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:04,616 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 15:22:04,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:04,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257975677] [2023-08-27 15:22:04,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257975677] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:04,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:04,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 15:22:04,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960715665] [2023-08-27 15:22:04,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:04,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:22:04,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:04,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:22:04,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:22:04,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 141 [2023-08-27 15:22:04,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 38 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:04,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 141 [2023-08-27 15:22:04,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:04,730 INFO L124 PetriNetUnfolderBase]: 57/163 cut-off events. [2023-08-27 15:22:04,730 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-27 15:22:04,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 163 events. 57/163 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 509 event pairs, 12 based on Foata normal form. 8/169 useless extension candidates. Maximal degree in co-relation 236. Up to 43 conditions per place. [2023-08-27 15:22:04,731 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 26 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2023-08-27 15:22:04,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 43 transitions, 243 flow [2023-08-27 15:22:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 15:22:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 15:22:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 449 transitions. [2023-08-27 15:22:04,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45491388044579534 [2023-08-27 15:22:04,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 449 transitions. [2023-08-27 15:22:04,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 449 transitions. [2023-08-27 15:22:04,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:04,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 449 transitions. [2023-08-27 15:22:04,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.14285714285714) internal successors, (449), 7 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,737 INFO L175 Difference]: Start difference. First operand has 56 places, 38 transitions, 161 flow. Second operand 7 states and 449 transitions. [2023-08-27 15:22:04,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 43 transitions, 243 flow [2023-08-27 15:22:04,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 199 flow, removed 5 selfloop flow, removed 12 redundant places. [2023-08-27 15:22:04,738 INFO L231 Difference]: Finished difference. Result has 48 places, 33 transitions, 127 flow [2023-08-27 15:22:04,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=127, PETRI_PLACES=48, PETRI_TRANSITIONS=33} [2023-08-27 15:22:04,739 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-27 15:22:04,739 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 33 transitions, 127 flow [2023-08-27 15:22:04,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.0) internal successors, (434), 7 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:04,739 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 15:22:04,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 15:22:04,739 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 15:22:04,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1943698077, now seen corresponding path program 8 times [2023-08-27 15:22:04,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:04,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660969728] [2023-08-27 15:22:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:04,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:04,854 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 15:22:04,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:04,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660969728] [2023-08-27 15:22:04,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660969728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:04,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:04,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:22:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231174383] [2023-08-27 15:22:04,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:04,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:22:04,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:22:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:22:04,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2023-08-27 15:22:04,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 33 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:04,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2023-08-27 15:22:04,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:04,958 INFO L124 PetriNetUnfolderBase]: 54/145 cut-off events. [2023-08-27 15:22:04,959 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-08-27 15:22:04,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 145 events. 54/145 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 472 event pairs, 27 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 208. Up to 61 conditions per place. [2023-08-27 15:22:04,959 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-27 15:22:04,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 37 transitions, 202 flow [2023-08-27 15:22:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:22:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:22:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 392 transitions. [2023-08-27 15:22:04,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46335697399527187 [2023-08-27 15:22:04,961 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 392 transitions. [2023-08-27 15:22:04,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 392 transitions. [2023-08-27 15:22:04,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:04,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 392 transitions. [2023-08-27 15:22:04,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 65.33333333333333) internal successors, (392), 6 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,964 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,964 INFO L175 Difference]: Start difference. First operand has 48 places, 33 transitions, 127 flow. Second operand 6 states and 392 transitions. [2023-08-27 15:22:04,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 37 transitions, 202 flow [2023-08-27 15:22:04,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 15:22:04,965 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-27 15:22:04,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-27 15:22:04,966 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-27 15:22:04,966 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-27 15:22:04,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:04,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 15:22:04,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 15:22:04,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 15:22:04,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 15:22:04,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 15:22:04,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 15:22:04,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 15:22:04,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 15:22:04,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 15:22:04,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 15:22:04,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 15:22:04,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 15:22:04,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 15:22:04,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 15:22:04,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 15:22:04,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 15:22:04,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 15:22:04,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 15:22:04,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 15:22:04,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 15:22:04,972 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:04,976 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 15:22:04,977 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 15:22:04,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:22:04 BasicIcfg [2023-08-27 15:22:04,979 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 15:22:04,980 INFO L158 Benchmark]: Toolchain (without parser) took 7792.93ms. Allocated memory was 343.9MB in the beginning and 545.3MB in the end (delta: 201.3MB). Free memory was 319.9MB in the beginning and 511.4MB in the end (delta: -191.5MB). Peak memory consumption was 13.4MB. Max. memory is 16.0GB. [2023-08-27 15:22:04,980 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 343.9MB. Free memory is still 320.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 15:22:04,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.69ms. Allocated memory is still 343.9MB. Free memory was 319.9MB in the beginning and 308.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 15:22:04,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.81ms. Allocated memory is still 343.9MB. Free memory was 308.9MB in the beginning and 307.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 15:22:04,980 INFO L158 Benchmark]: Boogie Preprocessor took 31.67ms. Allocated memory is still 343.9MB. Free memory was 307.1MB in the beginning and 305.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 15:22:04,981 INFO L158 Benchmark]: RCFGBuilder took 477.95ms. Allocated memory is still 343.9MB. Free memory was 305.6MB in the beginning and 287.6MB in the end (delta: 18.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 15:22:04,981 INFO L158 Benchmark]: TraceAbstraction took 7014.05ms. Allocated memory was 343.9MB in the beginning and 545.3MB in the end (delta: 201.3MB). Free memory was 286.9MB in the beginning and 511.4MB in the end (delta: -224.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 15:22:04,982 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 343.9MB. Free memory is still 320.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 213.69ms. Allocated memory is still 343.9MB. Free memory was 319.9MB in the beginning and 308.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.81ms. Allocated memory is still 343.9MB. Free memory was 308.9MB in the beginning and 307.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.67ms. Allocated memory is still 343.9MB. Free memory was 307.1MB in the beginning and 305.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 477.95ms. Allocated memory is still 343.9MB. Free memory was 305.6MB in the beginning and 287.6MB in the end (delta: 18.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 7014.05ms. Allocated memory was 343.9MB in the beginning and 545.3MB in the end (delta: 201.3MB). Free memory was 286.9MB in the beginning and 511.4MB in the end (delta: -224.5MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 82 PlacesBefore, 42 PlacesAfterwards, 76 TransitionsBefore, 35 TransitionsAfterwards, 900 CoEnabledTransitionPairs, 5 FixpointIterations, 31 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 5750 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2624, independent: 2342, independent conditional: 0, independent unconditional: 2342, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 542, independent: 514, independent conditional: 0, independent unconditional: 514, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2624, independent: 1828, independent conditional: 0, independent unconditional: 1828, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 542, unknown conditional: 0, unknown unconditional: 542] , Statistics on independence cache: Total cache size (in pairs): 203, Positive cache size: 180, Positive conditional cache size: 0, Positive unconditional cache size: 180, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 82]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.9s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1004 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1004 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1865 IncrementalHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 8 mSDtfsCounter, 1865 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=10, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 1115 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 15:22:04,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...