/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:08:20,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:08:20,979 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 23:08:20,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:08:20,988 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:08:21,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:08:21,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:08:21,025 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:08:21,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:08:21,033 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:08:21,033 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:08:21,033 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:08:21,033 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:08:21,034 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:08:21,035 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:08:21,035 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:08:21,035 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:08:21,035 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:08:21,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:08:21,036 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:08:21,036 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:08:21,036 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:08:21,036 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:08:21,036 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:08:21,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:08:21,037 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:08:21,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:08:21,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:08:21,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:08:21,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:08:21,039 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:08:21,039 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:08:21,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:08:21,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:08:21,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:08:21,039 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:08:21,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:08:21,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:08:21,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:08:21,325 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:08:21,326 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:08:21,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-26 23:08:22,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:08:22,742 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:08:22,742 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2023-08-26 23:08:22,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e48be8a3/d21ea87ebff5467da30d0493bb6c603d/FLAG12339c1fd [2023-08-26 23:08:23,112 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e48be8a3/d21ea87ebff5467da30d0493bb6c603d [2023-08-26 23:08:23,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:08:23,115 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:08:23,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:08:23,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:08:23,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:08:23,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f94a6d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23, skipping insertion in model container [2023-08-26 23:08:23,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,142 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:08:23,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:08:23,308 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:08:23,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:08:23,363 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:08:23,363 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23 WrapperNode [2023-08-26 23:08:23,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:08:23,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:08:23,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:08:23,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:08:23,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,420 INFO L138 Inliner]: procedures = 24, calls = 47, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 221 [2023-08-26 23:08:23,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:08:23,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:08:23,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:08:23,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:08:23,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,443 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,443 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:08:23,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:08:23,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:08:23,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:08:23,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (1/1) ... [2023-08-26 23:08:23,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:08:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:23,501 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) [2023-08-26 23:08:23,524 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 [2023-08-26 23:08:23,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:08:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 23:08:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 23:08:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 23:08:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 23:08:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 23:08:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 23:08:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:08:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:08:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:08:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-26 23:08:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:08:23,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:08:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 23:08:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:08:23,550 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 23:08:23,674 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:08:23,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:08:24,090 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:08:24,098 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:08:24,099 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-26 23:08:24,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:08:24 BoogieIcfgContainer [2023-08-26 23:08:24,101 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:08:24,103 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:08:24,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:08:24,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:08:24,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:08:23" (1/3) ... [2023-08-26 23:08:24,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fff3c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:08:24, skipping insertion in model container [2023-08-26 23:08:24,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:08:23" (2/3) ... [2023-08-26 23:08:24,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fff3c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:08:24, skipping insertion in model container [2023-08-26 23:08:24,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:08:24" (3/3) ... [2023-08-26 23:08:24,107 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-08-26 23:08:24,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:08:24,122 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-26 23:08:24,122 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:08:24,215 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 23:08:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 316 transitions, 656 flow [2023-08-26 23:08:24,335 INFO L124 PetriNetUnfolderBase]: 30/313 cut-off events. [2023-08-26 23:08:24,336 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:08:24,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 313 events. 30/313 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 325 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2023-08-26 23:08:24,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 316 transitions, 656 flow [2023-08-26 23:08:24,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 302 transitions, 622 flow [2023-08-26 23:08:24,352 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:08:24,359 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 302 transitions, 622 flow [2023-08-26 23:08:24,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 302 transitions, 622 flow [2023-08-26 23:08:24,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 302 transitions, 622 flow [2023-08-26 23:08:24,416 INFO L124 PetriNetUnfolderBase]: 30/302 cut-off events. [2023-08-26 23:08:24,416 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:08:24,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 302 events. 30/302 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 324 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 212. Up to 3 conditions per place. [2023-08-26 23:08:24,420 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-26 23:08:35,225 INFO L134 LiptonReduction]: Checked pairs total: 6119 [2023-08-26 23:08:35,225 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-08-26 23:08:35,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:08:35,255 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;@36d11f48, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:08:35,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 23:08:35,259 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:08:35,259 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-26 23:08:35,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:08:35,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:35,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-26 23:08:35,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:35,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash 38913, now seen corresponding path program 1 times [2023-08-26 23:08:35,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:35,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608910703] [2023-08-26 23:08:35,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:35,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:35,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:35,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608910703] [2023-08-26 23:08:35,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608910703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:35,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:35,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:08:35,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985721302] [2023-08-26 23:08:35,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:35,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:08:35,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:35,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:08:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:08:35,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-26 23:08:35,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:35,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:35,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-26 23:08:35,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:35,884 INFO L124 PetriNetUnfolderBase]: 815/1138 cut-off events. [2023-08-26 23:08:35,885 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-26 23:08:35,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1138 events. 815/1138 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3736 event pairs, 527 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 2004. Up to 1134 conditions per place. [2023-08-26 23:08:35,897 INFO L140 encePairwiseOnDemand]: 673/686 looper letters, 40 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-26 23:08:35,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 206 flow [2023-08-26 23:08:35,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:08:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:08:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 863 transitions. [2023-08-26 23:08:35,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193391642371234 [2023-08-26 23:08:35,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 863 transitions. [2023-08-26 23:08:35,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 863 transitions. [2023-08-26 23:08:35,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:35,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 863 transitions. [2023-08-26 23:08:35,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.6666666666667) internal successors, (863), 3 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:35,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:35,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:35,943 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 100 flow. Second operand 3 states and 863 transitions. [2023-08-26 23:08:35,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 206 flow [2023-08-26 23:08:35,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 23:08:35,951 INFO L231 Difference]: Finished difference. Result has 41 places, 47 transitions, 152 flow [2023-08-26 23:08:35,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2023-08-26 23:08:35,956 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-08-26 23:08:35,956 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 47 transitions, 152 flow [2023-08-26 23:08:35,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:35,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:35,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:08:35,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:08:35,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:35,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1209219, now seen corresponding path program 1 times [2023-08-26 23:08:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:35,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33087154] [2023-08-26 23:08:35,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:36,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:36,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:36,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33087154] [2023-08-26 23:08:36,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33087154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:36,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993019435] [2023-08-26 23:08:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:36,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:36,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:36,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:36,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 23:08:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:36,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:08:36,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:36,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:08:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:36,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993019435] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:08:36,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:08:36,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 23:08:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773463332] [2023-08-26 23:08:36,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:08:36,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:08:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:36,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:08:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:08:36,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-26 23:08:36,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:36,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:36,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-26 23:08:36,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:36,455 INFO L124 PetriNetUnfolderBase]: 833/1165 cut-off events. [2023-08-26 23:08:36,455 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-26 23:08:36,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1165 events. 833/1165 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3819 event pairs, 527 based on Foata normal form. 0/519 useless extension candidates. Maximal degree in co-relation 2269. Up to 1134 conditions per place. [2023-08-26 23:08:36,463 INFO L140 encePairwiseOnDemand]: 673/686 looper letters, 37 selfloop transitions, 37 changer transitions 0/74 dead transitions. [2023-08-26 23:08:36,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 74 transitions, 420 flow [2023-08-26 23:08:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:08:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:08:36,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1973 transitions. [2023-08-26 23:08:36,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108704706372345 [2023-08-26 23:08:36,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1973 transitions. [2023-08-26 23:08:36,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1973 transitions. [2023-08-26 23:08:36,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:36,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1973 transitions. [2023-08-26 23:08:36,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.85714285714283) internal successors, (1973), 7 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:36,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 686.0) internal successors, (5488), 8 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:36,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 686.0) internal successors, (5488), 8 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:36,486 INFO L175 Difference]: Start difference. First operand has 41 places, 47 transitions, 152 flow. Second operand 7 states and 1973 transitions. [2023-08-26 23:08:36,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 74 transitions, 420 flow [2023-08-26 23:08:36,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:08:36,493 INFO L231 Difference]: Finished difference. Result has 48 places, 74 transitions, 382 flow [2023-08-26 23:08:36,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=382, PETRI_PLACES=48, PETRI_TRANSITIONS=74} [2023-08-26 23:08:36,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-26 23:08:36,494 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 74 transitions, 382 flow [2023-08-26 23:08:36,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:36,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:36,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-26 23:08:36,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:36,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:36,702 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:36,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash 37486913, now seen corresponding path program 1 times [2023-08-26 23:08:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:36,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154472391] [2023-08-26 23:08:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:36,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:36,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154472391] [2023-08-26 23:08:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154472391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:36,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962525983] [2023-08-26 23:08:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:36,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:36,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:36,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:36,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 23:08:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:36,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-26 23:08:36,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:36,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:08:36,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962525983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:36,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:08:36,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-26 23:08:36,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904685965] [2023-08-26 23:08:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:08:36,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:08:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:08:36,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-26 23:08:36,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 74 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 270.8) internal successors, (1354), 5 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:36,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:36,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-26 23:08:36,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:37,065 INFO L124 PetriNetUnfolderBase]: 824/1153 cut-off events. [2023-08-26 23:08:37,065 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 23:08:37,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 1153 events. 824/1153 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3794 event pairs, 527 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 2340. Up to 1125 conditions per place. [2023-08-26 23:08:37,071 INFO L140 encePairwiseOnDemand]: 676/686 looper letters, 42 selfloop transitions, 20 changer transitions 0/62 dead transitions. [2023-08-26 23:08:37,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 425 flow [2023-08-26 23:08:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:08:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:08:37,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1406 transitions. [2023-08-26 23:08:37,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099125364431487 [2023-08-26 23:08:37,076 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1406 transitions. [2023-08-26 23:08:37,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1406 transitions. [2023-08-26 23:08:37,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:37,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1406 transitions. [2023-08-26 23:08:37,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.2) internal successors, (1406), 5 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,086 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,087 INFO L175 Difference]: Start difference. First operand has 48 places, 74 transitions, 382 flow. Second operand 5 states and 1406 transitions. [2023-08-26 23:08:37,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 425 flow [2023-08-26 23:08:37,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 388 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 23:08:37,094 INFO L231 Difference]: Finished difference. Result has 47 places, 62 transitions, 304 flow [2023-08-26 23:08:37,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=62} [2023-08-26 23:08:37,095 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-08-26 23:08:37,095 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 62 transitions, 304 flow [2023-08-26 23:08:37,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 270.8) internal successors, (1354), 5 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:37,096 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-26 23:08:37,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:37,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-26 23:08:37,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:37,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1665276601, now seen corresponding path program 2 times [2023-08-26 23:08:37,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:37,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769633248] [2023-08-26 23:08:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:37,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769633248] [2023-08-26 23:08:37,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769633248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:37,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8658859] [2023-08-26 23:08:37,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:08:37,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:37,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:37,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:37,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 23:08:37,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:08:37,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:08:37,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 23:08:37,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:37,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:08:37,520 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:08:37,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8658859] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:37,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:08:37,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-26 23:08:37,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025105028] [2023-08-26 23:08:37,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:37,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:08:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:37,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:08:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-26 23:08:37,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 686 [2023-08-26 23:08:37,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 62 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:37,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 686 [2023-08-26 23:08:37,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:37,657 INFO L124 PetriNetUnfolderBase]: 824/1152 cut-off events. [2023-08-26 23:08:37,658 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-26 23:08:37,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 1152 events. 824/1152 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3800 event pairs, 527 based on Foata normal form. 1/527 useless extension candidates. Maximal degree in co-relation 2344. Up to 1147 conditions per place. [2023-08-26 23:08:37,664 INFO L140 encePairwiseOnDemand]: 683/686 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-26 23:08:37,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 416 flow [2023-08-26 23:08:37,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:08:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:08:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 857 transitions. [2023-08-26 23:08:37,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164237123420797 [2023-08-26 23:08:37,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 857 transitions. [2023-08-26 23:08:37,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 857 transitions. [2023-08-26 23:08:37,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:37,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 857 transitions. [2023-08-26 23:08:37,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.6666666666667) internal successors, (857), 3 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,688 INFO L175 Difference]: Start difference. First operand has 47 places, 62 transitions, 304 flow. Second operand 3 states and 857 transitions. [2023-08-26 23:08:37,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 416 flow [2023-08-26 23:08:37,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 388 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 23:08:37,691 INFO L231 Difference]: Finished difference. Result has 45 places, 61 transitions, 278 flow [2023-08-26 23:08:37,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=45, PETRI_TRANSITIONS=61} [2023-08-26 23:08:37,691 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-26 23:08:37,692 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 61 transitions, 278 flow [2023-08-26 23:08:37,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:37,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:37,692 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-26 23:08:37,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:37,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:37,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:37,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1201459392, now seen corresponding path program 1 times [2023-08-26 23:08:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:37,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577960303] [2023-08-26 23:08:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:38,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:38,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577960303] [2023-08-26 23:08:38,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577960303] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:38,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801031225] [2023-08-26 23:08:38,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:38,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:38,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:38,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:38,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 23:08:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:38,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 23:08:38,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:38,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:08:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801031225] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:08:38,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:08:38,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 23:08:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494243895] [2023-08-26 23:08:38,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:08:38,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 23:08:38,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:38,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 23:08:38,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 23:08:38,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-26 23:08:38,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 61 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 271.15384615384613) internal successors, (3525), 13 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:38,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-26 23:08:38,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:38,394 INFO L124 PetriNetUnfolderBase]: 842/1188 cut-off events. [2023-08-26 23:08:38,394 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-26 23:08:38,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 1188 events. 842/1188 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4010 event pairs, 527 based on Foata normal form. 12/574 useless extension candidates. Maximal degree in co-relation 2451. Up to 1139 conditions per place. [2023-08-26 23:08:38,400 INFO L140 encePairwiseOnDemand]: 677/686 looper letters, 36 selfloop transitions, 61 changer transitions 0/97 dead transitions. [2023-08-26 23:08:38,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 97 transitions, 706 flow [2023-08-26 23:08:38,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 23:08:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 23:08:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3349 transitions. [2023-08-26 23:08:38,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068270165208941 [2023-08-26 23:08:38,410 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3349 transitions. [2023-08-26 23:08:38,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3349 transitions. [2023-08-26 23:08:38,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:38,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3349 transitions. [2023-08-26 23:08:38,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 279.0833333333333) internal successors, (3349), 12 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,432 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,432 INFO L175 Difference]: Start difference. First operand has 45 places, 61 transitions, 278 flow. Second operand 12 states and 3349 transitions. [2023-08-26 23:08:38,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 97 transitions, 706 flow [2023-08-26 23:08:38,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 97 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:08:38,437 INFO L231 Difference]: Finished difference. Result has 60 places, 97 transitions, 696 flow [2023-08-26 23:08:38,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=696, PETRI_PLACES=60, PETRI_TRANSITIONS=97} [2023-08-26 23:08:38,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-08-26 23:08:38,439 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 97 transitions, 696 flow [2023-08-26 23:08:38,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 271.15384615384613) internal successors, (3525), 13 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:38,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:38,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:38,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:38,646 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:38,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:38,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1205539790, now seen corresponding path program 1 times [2023-08-26 23:08:38,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:38,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907029321] [2023-08-26 23:08:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:38,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:38,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:38,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:38,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907029321] [2023-08-26 23:08:38,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907029321] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:38,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:38,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:08:38,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703569589] [2023-08-26 23:08:38,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:38,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:08:38,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:38,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:08:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:08:38,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-26 23:08:38,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 97 transitions, 696 flow. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:38,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-26 23:08:38,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:38,918 INFO L124 PetriNetUnfolderBase]: 1386/1938 cut-off events. [2023-08-26 23:08:38,918 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-26 23:08:38,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 1938 events. 1386/1938 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7630 event pairs, 323 based on Foata normal form. 0/930 useless extension candidates. Maximal degree in co-relation 4062. Up to 1171 conditions per place. [2023-08-26 23:08:38,928 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 120 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2023-08-26 23:08:38,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 122 transitions, 995 flow [2023-08-26 23:08:38,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:08:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:08:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2023-08-26 23:08:38,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44363459669582117 [2023-08-26 23:08:38,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 913 transitions. [2023-08-26 23:08:38,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 913 transitions. [2023-08-26 23:08:38,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:38,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 913 transitions. [2023-08-26 23:08:38,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 304.3333333333333) internal successors, (913), 3 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,937 INFO L175 Difference]: Start difference. First operand has 60 places, 97 transitions, 696 flow. Second operand 3 states and 913 transitions. [2023-08-26 23:08:38,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 122 transitions, 995 flow [2023-08-26 23:08:38,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 122 transitions, 817 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-26 23:08:38,942 INFO L231 Difference]: Finished difference. Result has 58 places, 98 transitions, 532 flow [2023-08-26 23:08:38,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=58, PETRI_TRANSITIONS=98} [2023-08-26 23:08:38,945 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-08-26 23:08:38,945 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 98 transitions, 532 flow [2023-08-26 23:08:38,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:38,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:38,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 23:08:38,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:38,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:38,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1117316166, now seen corresponding path program 1 times [2023-08-26 23:08:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:38,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799562366] [2023-08-26 23:08:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:38,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:38,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799562366] [2023-08-26 23:08:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799562366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:38,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:38,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:08:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499101712] [2023-08-26 23:08:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:38,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:08:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:08:38,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:08:38,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-26 23:08:38,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 98 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:38,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:38,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-26 23:08:38,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:39,141 INFO L124 PetriNetUnfolderBase]: 1254/1754 cut-off events. [2023-08-26 23:08:39,141 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2023-08-26 23:08:39,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1754 events. 1254/1754 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6261 event pairs, 799 based on Foata normal form. 0/972 useless extension candidates. Maximal degree in co-relation 3830. Up to 1754 conditions per place. [2023-08-26 23:08:39,150 INFO L140 encePairwiseOnDemand]: 684/686 looper letters, 96 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2023-08-26 23:08:39,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 97 transitions, 722 flow [2023-08-26 23:08:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:08:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:08:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 886 transitions. [2023-08-26 23:08:39,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305150631681244 [2023-08-26 23:08:39,153 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 886 transitions. [2023-08-26 23:08:39,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 886 transitions. [2023-08-26 23:08:39,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:39,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 886 transitions. [2023-08-26 23:08:39,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 295.3333333333333) internal successors, (886), 3 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,159 INFO L175 Difference]: Start difference. First operand has 58 places, 98 transitions, 532 flow. Second operand 3 states and 886 transitions. [2023-08-26 23:08:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 97 transitions, 722 flow [2023-08-26 23:08:39,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 97 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:08:39,164 INFO L231 Difference]: Finished difference. Result has 58 places, 97 transitions, 528 flow [2023-08-26 23:08:39,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=58, PETRI_TRANSITIONS=97} [2023-08-26 23:08:39,165 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-08-26 23:08:39,167 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 97 transitions, 528 flow [2023-08-26 23:08:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:39,179 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 23:08:39,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:39,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:39,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1117316132, now seen corresponding path program 1 times [2023-08-26 23:08:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408528880] [2023-08-26 23:08:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:39,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:39,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408528880] [2023-08-26 23:08:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408528880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:39,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:08:39,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091598766] [2023-08-26 23:08:39,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:39,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:08:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:39,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:08:39,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 23:08:39,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:08:39,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 97 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:39,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:08:39,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:39,548 INFO L124 PetriNetUnfolderBase]: 1584/2263 cut-off events. [2023-08-26 23:08:39,549 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2023-08-26 23:08:39,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5015 conditions, 2263 events. 1584/2263 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8780 event pairs, 1020 based on Foata normal form. 0/1273 useless extension candidates. Maximal degree in co-relation 4995. Up to 1753 conditions per place. [2023-08-26 23:08:39,560 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 163 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2023-08-26 23:08:39,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 166 transitions, 1225 flow [2023-08-26 23:08:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:08:39,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:08:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1032 transitions. [2023-08-26 23:08:39,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3760932944606414 [2023-08-26 23:08:39,564 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1032 transitions. [2023-08-26 23:08:39,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1032 transitions. [2023-08-26 23:08:39,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:39,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1032 transitions. [2023-08-26 23:08:39,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,571 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,571 INFO L175 Difference]: Start difference. First operand has 58 places, 97 transitions, 528 flow. Second operand 4 states and 1032 transitions. [2023-08-26 23:08:39,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 166 transitions, 1225 flow [2023-08-26 23:08:39,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 166 transitions, 1224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:08:39,577 INFO L231 Difference]: Finished difference. Result has 61 places, 97 transitions, 536 flow [2023-08-26 23:08:39,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=536, PETRI_PLACES=61, PETRI_TRANSITIONS=97} [2023-08-26 23:08:39,579 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-08-26 23:08:39,579 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 97 transitions, 536 flow [2023-08-26 23:08:39,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.25) internal successors, (973), 4 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:39,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 23:08:39,579 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:39,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1112560091, now seen corresponding path program 1 times [2023-08-26 23:08:39,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:39,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359690352] [2023-08-26 23:08:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:39,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:39,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:39,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:39,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359690352] [2023-08-26 23:08:39,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359690352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:39,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:39,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:08:39,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838475673] [2023-08-26 23:08:39,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:39,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:08:39,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:39,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:08:39,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:08:39,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-26 23:08:39,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 97 transitions, 536 flow. Second operand has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:39,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:39,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-26 23:08:39,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:39,936 INFO L124 PetriNetUnfolderBase]: 2544/3595 cut-off events. [2023-08-26 23:08:39,937 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-08-26 23:08:39,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7964 conditions, 3595 events. 2544/3595 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15363 event pairs, 580 based on Foata normal form. 0/2217 useless extension candidates. Maximal degree in co-relation 7942. Up to 2223 conditions per place. [2023-08-26 23:08:39,963 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 118 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-26 23:08:39,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 120 transitions, 834 flow [2023-08-26 23:08:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:08:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:08:39,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 909 transitions. [2023-08-26 23:08:39,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44169096209912534 [2023-08-26 23:08:39,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 909 transitions. [2023-08-26 23:08:39,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 909 transitions. [2023-08-26 23:08:39,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:39,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 909 transitions. [2023-08-26 23:08:39,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.0) internal successors, (909), 3 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,023 INFO L175 Difference]: Start difference. First operand has 61 places, 97 transitions, 536 flow. Second operand 3 states and 909 transitions. [2023-08-26 23:08:40,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 120 transitions, 834 flow [2023-08-26 23:08:40,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 120 transitions, 828 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 23:08:40,028 INFO L231 Difference]: Finished difference. Result has 63 places, 98 transitions, 544 flow [2023-08-26 23:08:40,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=544, PETRI_PLACES=63, PETRI_TRANSITIONS=98} [2023-08-26 23:08:40,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-08-26 23:08:40,029 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 98 transitions, 544 flow [2023-08-26 23:08:40,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:40,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:40,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 23:08:40,029 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:40,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1622137170, now seen corresponding path program 1 times [2023-08-26 23:08:40,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:40,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309583398] [2023-08-26 23:08:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:40,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:40,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:08:40,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:40,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309583398] [2023-08-26 23:08:40,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309583398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:40,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:40,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:08:40,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495452562] [2023-08-26 23:08:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:40,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:08:40,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:08:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:08:40,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:08:40,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 98 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:40,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:08:40,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:40,680 INFO L124 PetriNetUnfolderBase]: 3578/5151 cut-off events. [2023-08-26 23:08:40,680 INFO L125 PetriNetUnfolderBase]: For 886/886 co-relation queries the response was YES. [2023-08-26 23:08:40,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12073 conditions, 5151 events. 3578/5151 cut-off events. For 886/886 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 24016 event pairs, 1652 based on Foata normal form. 82/3547 useless extension candidates. Maximal degree in co-relation 12049. Up to 1990 conditions per place. [2023-08-26 23:08:40,709 INFO L140 encePairwiseOnDemand]: 680/686 looper letters, 155 selfloop transitions, 15 changer transitions 0/170 dead transitions. [2023-08-26 23:08:40,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 170 transitions, 1166 flow [2023-08-26 23:08:40,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:08:40,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:08:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1295 transitions. [2023-08-26 23:08:40,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37755102040816324 [2023-08-26 23:08:40,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1295 transitions. [2023-08-26 23:08:40,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1295 transitions. [2023-08-26 23:08:40,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:40,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1295 transitions. [2023-08-26 23:08:40,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,722 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,722 INFO L175 Difference]: Start difference. First operand has 63 places, 98 transitions, 544 flow. Second operand 5 states and 1295 transitions. [2023-08-26 23:08:40,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 170 transitions, 1166 flow [2023-08-26 23:08:40,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 170 transitions, 1162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:08:40,730 INFO L231 Difference]: Finished difference. Result has 67 places, 98 transitions, 575 flow [2023-08-26 23:08:40,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=67, PETRI_TRANSITIONS=98} [2023-08-26 23:08:40,731 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-08-26 23:08:40,731 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 98 transitions, 575 flow [2023-08-26 23:08:40,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.0) internal successors, (1215), 5 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:40,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:40,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 23:08:40,732 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:40,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash -129467822, now seen corresponding path program 1 times [2023-08-26 23:08:40,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:40,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874616509] [2023-08-26 23:08:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:40,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:40,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:40,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874616509] [2023-08-26 23:08:40,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874616509] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:40,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:40,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:08:40,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675156304] [2023-08-26 23:08:40,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:40,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:08:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:08:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:08:40,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-26 23:08:40,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 98 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:40,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:40,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-26 23:08:40,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:41,380 INFO L124 PetriNetUnfolderBase]: 5090/7299 cut-off events. [2023-08-26 23:08:41,381 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2023-08-26 23:08:41,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17006 conditions, 7299 events. 5090/7299 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36632 event pairs, 1240 based on Foata normal form. 0/4985 useless extension candidates. Maximal degree in co-relation 16980. Up to 4585 conditions per place. [2023-08-26 23:08:41,417 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 118 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2023-08-26 23:08:41,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 120 transitions, 882 flow [2023-08-26 23:08:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:08:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:08:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 907 transitions. [2023-08-26 23:08:41,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44071914480077745 [2023-08-26 23:08:41,420 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 907 transitions. [2023-08-26 23:08:41,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 907 transitions. [2023-08-26 23:08:41,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:41,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 907 transitions. [2023-08-26 23:08:41,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:41,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:41,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:41,425 INFO L175 Difference]: Start difference. First operand has 67 places, 98 transitions, 575 flow. Second operand 3 states and 907 transitions. [2023-08-26 23:08:41,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 120 transitions, 882 flow [2023-08-26 23:08:41,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 872 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-26 23:08:41,431 INFO L231 Difference]: Finished difference. Result has 68 places, 99 transitions, 581 flow [2023-08-26 23:08:41,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=581, PETRI_PLACES=68, PETRI_TRANSITIONS=99} [2023-08-26 23:08:41,432 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-08-26 23:08:41,432 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 99 transitions, 581 flow [2023-08-26 23:08:41,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.3333333333333) internal successors, (859), 3 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:41,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:41,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:41,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:08:41,433 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:41,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:41,433 INFO L85 PathProgramCache]: Analyzing trace with hash 281465918, now seen corresponding path program 1 times [2023-08-26 23:08:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:41,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12907418] [2023-08-26 23:08:41,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:41,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:41,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12907418] [2023-08-26 23:08:41,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12907418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:41,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:41,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:08:41,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724102350] [2023-08-26 23:08:41,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:41,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:08:41,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:41,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:08:41,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 23:08:41,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:08:41,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 99 transitions, 581 flow. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:41,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:41,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:08:41,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:42,021 INFO L124 PetriNetUnfolderBase]: 4090/5875 cut-off events. [2023-08-26 23:08:42,022 INFO L125 PetriNetUnfolderBase]: For 2011/2011 co-relation queries the response was YES. [2023-08-26 23:08:42,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14869 conditions, 5875 events. 4090/5875 cut-off events. For 2011/2011 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 27284 event pairs, 2888 based on Foata normal form. 104/4681 useless extension candidates. Maximal degree in co-relation 14842. Up to 5055 conditions per place. [2023-08-26 23:08:42,051 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 163 selfloop transitions, 3 changer transitions 0/166 dead transitions. [2023-08-26 23:08:42,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 166 transitions, 1283 flow [2023-08-26 23:08:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:08:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:08:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1029 transitions. [2023-08-26 23:08:42,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-08-26 23:08:42,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1029 transitions. [2023-08-26 23:08:42,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1029 transitions. [2023-08-26 23:08:42,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:42,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1029 transitions. [2023-08-26 23:08:42,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,062 INFO L175 Difference]: Start difference. First operand has 68 places, 99 transitions, 581 flow. Second operand 4 states and 1029 transitions. [2023-08-26 23:08:42,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 166 transitions, 1283 flow [2023-08-26 23:08:42,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 166 transitions, 1281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:08:42,069 INFO L231 Difference]: Finished difference. Result has 71 places, 99 transitions, 588 flow [2023-08-26 23:08:42,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=71, PETRI_TRANSITIONS=99} [2023-08-26 23:08:42,070 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-08-26 23:08:42,070 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 99 transitions, 588 flow [2023-08-26 23:08:42,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:42,071 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:42,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 23:08:42,071 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:42,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 276641296, now seen corresponding path program 1 times [2023-08-26 23:08:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:42,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361040138] [2023-08-26 23:08:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:42,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:42,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361040138] [2023-08-26 23:08:42,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361040138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:42,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:42,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:08:42,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88139216] [2023-08-26 23:08:42,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:42,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:08:42,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:42,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:08:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:08:42,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:08:42,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 99 transitions, 588 flow. Second operand has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:42,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:08:42,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:42,638 INFO L124 PetriNetUnfolderBase]: 3296/4723 cut-off events. [2023-08-26 23:08:42,638 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2023-08-26 23:08:42,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12131 conditions, 4723 events. 3296/4723 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 21638 event pairs, 888 based on Foata normal form. 0/3725 useless extension candidates. Maximal degree in co-relation 12102. Up to 2721 conditions per place. [2023-08-26 23:08:42,663 INFO L140 encePairwiseOnDemand]: 680/686 looper letters, 149 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2023-08-26 23:08:42,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 164 transitions, 1193 flow [2023-08-26 23:08:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:08:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:08:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1287 transitions. [2023-08-26 23:08:42,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752186588921283 [2023-08-26 23:08:42,667 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1287 transitions. [2023-08-26 23:08:42,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1287 transitions. [2023-08-26 23:08:42,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:42,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1287 transitions. [2023-08-26 23:08:42,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.4) internal successors, (1287), 5 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,673 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,673 INFO L175 Difference]: Start difference. First operand has 71 places, 99 transitions, 588 flow. Second operand 5 states and 1287 transitions. [2023-08-26 23:08:42,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 164 transitions, 1193 flow [2023-08-26 23:08:42,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 164 transitions, 1188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:08:42,682 INFO L231 Difference]: Finished difference. Result has 74 places, 99 transitions, 616 flow [2023-08-26 23:08:42,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=616, PETRI_PLACES=74, PETRI_TRANSITIONS=99} [2023-08-26 23:08:42,683 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-08-26 23:08:42,683 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 99 transitions, 616 flow [2023-08-26 23:08:42,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.2) internal successors, (1216), 5 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:42,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:42,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:42,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 23:08:42,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:42,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1367280297, now seen corresponding path program 1 times [2023-08-26 23:08:42,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:42,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506329594] [2023-08-26 23:08:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:42,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:42,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506329594] [2023-08-26 23:08:42,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506329594] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:42,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227017146] [2023-08-26 23:08:42,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:42,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:42,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:42,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 23:08:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:42,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:08:42,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:43,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:08:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:43,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227017146] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:08:43,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:08:43,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-26 23:08:43,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331351755] [2023-08-26 23:08:43,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:08:43,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 23:08:43,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 23:08:43,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-26 23:08:43,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 686 [2023-08-26 23:08:43,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 99 transitions, 616 flow. Second operand has 15 states, 15 states have (on average 236.93333333333334) internal successors, (3554), 15 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:43,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:43,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 686 [2023-08-26 23:08:43,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:44,688 INFO L124 PetriNetUnfolderBase]: 9682/13902 cut-off events. [2023-08-26 23:08:44,688 INFO L125 PetriNetUnfolderBase]: For 7877/7877 co-relation queries the response was YES. [2023-08-26 23:08:44,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36362 conditions, 13902 events. 9682/13902 cut-off events. For 7877/7877 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 75464 event pairs, 5452 based on Foata normal form. 358/12194 useless extension candidates. Maximal degree in co-relation 36332. Up to 3928 conditions per place. [2023-08-26 23:08:44,754 INFO L140 encePairwiseOnDemand]: 673/686 looper letters, 522 selfloop transitions, 53 changer transitions 0/575 dead transitions. [2023-08-26 23:08:44,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 575 transitions, 4070 flow [2023-08-26 23:08:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-26 23:08:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-26 23:08:44,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 7613 transitions. [2023-08-26 23:08:44,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35798927866077307 [2023-08-26 23:08:44,770 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 7613 transitions. [2023-08-26 23:08:44,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 7613 transitions. [2023-08-26 23:08:44,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:44,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 7613 transitions. [2023-08-26 23:08:44,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 245.58064516129033) internal successors, (7613), 31 states have internal predecessors, (7613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:44,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 686.0) internal successors, (21952), 32 states have internal predecessors, (21952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:44,807 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 686.0) internal successors, (21952), 32 states have internal predecessors, (21952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:44,807 INFO L175 Difference]: Start difference. First operand has 74 places, 99 transitions, 616 flow. Second operand 31 states and 7613 transitions. [2023-08-26 23:08:44,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 575 transitions, 4070 flow [2023-08-26 23:08:44,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 575 transitions, 4033 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 23:08:44,827 INFO L231 Difference]: Finished difference. Result has 116 places, 133 transitions, 1077 flow [2023-08-26 23:08:44,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1077, PETRI_PLACES=116, PETRI_TRANSITIONS=133} [2023-08-26 23:08:44,827 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 73 predicate places. [2023-08-26 23:08:44,827 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 133 transitions, 1077 flow [2023-08-26 23:08:44,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 236.93333333333334) internal successors, (3554), 15 states have internal predecessors, (3554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:44,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:44,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:44,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:45,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 23:08:45,035 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:45,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:45,035 INFO L85 PathProgramCache]: Analyzing trace with hash 81136692, now seen corresponding path program 1 times [2023-08-26 23:08:45,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:45,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18472399] [2023-08-26 23:08:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:45,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:45,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:45,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18472399] [2023-08-26 23:08:45,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18472399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:45,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:45,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:08:45,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181269692] [2023-08-26 23:08:45,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:45,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:08:45,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:45,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:08:45,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:08:45,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:08:45,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 133 transitions, 1077 flow. Second operand has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:45,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:45,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:08:45,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:46,766 INFO L124 PetriNetUnfolderBase]: 13253/19345 cut-off events. [2023-08-26 23:08:46,766 INFO L125 PetriNetUnfolderBase]: For 27091/27091 co-relation queries the response was YES. [2023-08-26 23:08:46,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54673 conditions, 19345 events. 13253/19345 cut-off events. For 27091/27091 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 114670 event pairs, 5378 based on Foata normal form. 540/17917 useless extension candidates. Maximal degree in co-relation 54628. Up to 8161 conditions per place. [2023-08-26 23:08:46,885 INFO L140 encePairwiseOnDemand]: 681/686 looper letters, 167 selfloop transitions, 25 changer transitions 0/192 dead transitions. [2023-08-26 23:08:46,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 192 transitions, 1714 flow [2023-08-26 23:08:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:08:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:08:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1288 transitions. [2023-08-26 23:08:46,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37551020408163266 [2023-08-26 23:08:46,889 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1288 transitions. [2023-08-26 23:08:46,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1288 transitions. [2023-08-26 23:08:46,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:46,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1288 transitions. [2023-08-26 23:08:46,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:46,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:46,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:46,896 INFO L175 Difference]: Start difference. First operand has 116 places, 133 transitions, 1077 flow. Second operand 5 states and 1288 transitions. [2023-08-26 23:08:46,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 192 transitions, 1714 flow [2023-08-26 23:08:46,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 192 transitions, 1673 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-26 23:08:46,985 INFO L231 Difference]: Finished difference. Result has 117 places, 133 transitions, 1086 flow [2023-08-26 23:08:46,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1086, PETRI_PLACES=117, PETRI_TRANSITIONS=133} [2023-08-26 23:08:46,986 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2023-08-26 23:08:46,986 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 133 transitions, 1086 flow [2023-08-26 23:08:46,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:46,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:46,986 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:46,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 23:08:46,987 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:46,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1887231699, now seen corresponding path program 1 times [2023-08-26 23:08:46,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:46,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061974838] [2023-08-26 23:08:46,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:46,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:08:47,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:47,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061974838] [2023-08-26 23:08:47,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061974838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:47,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:08:47,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:08:47,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635189293] [2023-08-26 23:08:47,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:47,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:08:47,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:08:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:08:47,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:08:47,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 133 transitions, 1086 flow. Second operand has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:47,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:47,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:08:47,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:48,567 INFO L124 PetriNetUnfolderBase]: 10412/15269 cut-off events. [2023-08-26 23:08:48,568 INFO L125 PetriNetUnfolderBase]: For 24017/24017 co-relation queries the response was YES. [2023-08-26 23:08:48,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44218 conditions, 15269 events. 10412/15269 cut-off events. For 24017/24017 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 88743 event pairs, 3222 based on Foata normal form. 196/13925 useless extension candidates. Maximal degree in co-relation 44173. Up to 8363 conditions per place. [2023-08-26 23:08:48,645 INFO L140 encePairwiseOnDemand]: 680/686 looper letters, 163 selfloop transitions, 25 changer transitions 0/188 dead transitions. [2023-08-26 23:08:48,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 188 transitions, 1712 flow [2023-08-26 23:08:48,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:08:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:08:48,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1285 transitions. [2023-08-26 23:08:48,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746355685131195 [2023-08-26 23:08:48,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1285 transitions. [2023-08-26 23:08:48,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1285 transitions. [2023-08-26 23:08:48,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:48,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1285 transitions. [2023-08-26 23:08:48,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:48,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:48,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:48,655 INFO L175 Difference]: Start difference. First operand has 117 places, 133 transitions, 1086 flow. Second operand 5 states and 1285 transitions. [2023-08-26 23:08:48,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 188 transitions, 1712 flow [2023-08-26 23:08:48,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 188 transitions, 1669 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 23:08:48,731 INFO L231 Difference]: Finished difference. Result has 119 places, 133 transitions, 1101 flow [2023-08-26 23:08:48,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1101, PETRI_PLACES=119, PETRI_TRANSITIONS=133} [2023-08-26 23:08:48,732 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2023-08-26 23:08:48,732 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 133 transitions, 1101 flow [2023-08-26 23:08:48,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 243.4) internal successors, (1217), 5 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:48,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:48,733 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2023-08-26 23:08:48,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 23:08:48,733 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:48,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:48,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1665015328, now seen corresponding path program 2 times [2023-08-26 23:08:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:48,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256431304] [2023-08-26 23:08:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:48,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256431304] [2023-08-26 23:08:48,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256431304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:48,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518546368] [2023-08-26 23:08:48,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:08:48,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:48,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:48,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:48,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 23:08:49,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:08:49,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:08:49,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 23:08:49,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:49,130 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 23:08:49,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 23:08:49,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518546368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:08:49,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 23:08:49,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2023-08-26 23:08:49,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053204645] [2023-08-26 23:08:49,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:08:49,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:08:49,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:08:49,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2023-08-26 23:08:49,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 686 [2023-08-26 23:08:49,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 133 transitions, 1101 flow. Second operand has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:49,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:49,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 686 [2023-08-26 23:08:49,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:50,417 INFO L124 PetriNetUnfolderBase]: 10412/15266 cut-off events. [2023-08-26 23:08:50,418 INFO L125 PetriNetUnfolderBase]: For 24235/24235 co-relation queries the response was YES. [2023-08-26 23:08:50,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44949 conditions, 15266 events. 10412/15266 cut-off events. For 24235/24235 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 86856 event pairs, 7646 based on Foata normal form. 3/13729 useless extension candidates. Maximal degree in co-relation 44904. Up to 15210 conditions per place. [2023-08-26 23:08:50,498 INFO L140 encePairwiseOnDemand]: 683/686 looper letters, 114 selfloop transitions, 16 changer transitions 0/130 dead transitions. [2023-08-26 23:08:50,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 130 transitions, 1286 flow [2023-08-26 23:08:50,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:08:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:08:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1092 transitions. [2023-08-26 23:08:50,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2023-08-26 23:08:50,500 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1092 transitions. [2023-08-26 23:08:50,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1092 transitions. [2023-08-26 23:08:50,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:50,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1092 transitions. [2023-08-26 23:08:50,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:50,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:50,505 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:50,505 INFO L175 Difference]: Start difference. First operand has 119 places, 133 transitions, 1101 flow. Second operand 4 states and 1092 transitions. [2023-08-26 23:08:50,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 130 transitions, 1286 flow [2023-08-26 23:08:50,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 130 transitions, 1261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:08:50,575 INFO L231 Difference]: Finished difference. Result has 119 places, 130 transitions, 1033 flow [2023-08-26 23:08:50,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1033, PETRI_PLACES=119, PETRI_TRANSITIONS=130} [2023-08-26 23:08:50,576 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 76 predicate places. [2023-08-26 23:08:50,576 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 130 transitions, 1033 flow [2023-08-26 23:08:50,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:50,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:50,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:50,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:50,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 23:08:50,785 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:50,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:50,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1566254872, now seen corresponding path program 1 times [2023-08-26 23:08:50,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:50,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151028141] [2023-08-26 23:08:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:50,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:08:50,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:50,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151028141] [2023-08-26 23:08:50,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151028141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688936715] [2023-08-26 23:08:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:50,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:50,965 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:50,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 23:08:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:51,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:08:51,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:51,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:08:51,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:51,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688936715] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:08:51,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:08:51,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-08-26 23:08:51,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62452253] [2023-08-26 23:08:51,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:08:51,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 23:08:51,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:51,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 23:08:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-26 23:08:51,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:08:51,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 1033 flow. Second operand has 13 states, 13 states have (on average 243.69230769230768) internal successors, (3168), 13 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:51,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:51,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:08:51,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:53,220 INFO L124 PetriNetUnfolderBase]: 14230/21045 cut-off events. [2023-08-26 23:08:53,220 INFO L125 PetriNetUnfolderBase]: For 35270/35270 co-relation queries the response was YES. [2023-08-26 23:08:53,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60084 conditions, 21045 events. 14230/21045 cut-off events. For 35270/35270 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 130395 event pairs, 5405 based on Foata normal form. 736/20329 useless extension candidates. Maximal degree in co-relation 60038. Up to 6912 conditions per place. [2023-08-26 23:08:53,314 INFO L140 encePairwiseOnDemand]: 677/686 looper letters, 202 selfloop transitions, 38 changer transitions 0/240 dead transitions. [2023-08-26 23:08:53,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 240 transitions, 2004 flow [2023-08-26 23:08:53,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 23:08:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 23:08:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2535 transitions. [2023-08-26 23:08:53,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369533527696793 [2023-08-26 23:08:53,317 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2535 transitions. [2023-08-26 23:08:53,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2535 transitions. [2023-08-26 23:08:53,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:53,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2535 transitions. [2023-08-26 23:08:53,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 253.5) internal successors, (2535), 10 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:53,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 686.0) internal successors, (7546), 11 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:53,326 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 686.0) internal successors, (7546), 11 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:53,326 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 1033 flow. Second operand 10 states and 2535 transitions. [2023-08-26 23:08:53,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 240 transitions, 2004 flow [2023-08-26 23:08:53,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 240 transitions, 1987 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:08:53,389 INFO L231 Difference]: Finished difference. Result has 127 places, 130 transitions, 1111 flow [2023-08-26 23:08:53,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1111, PETRI_PLACES=127, PETRI_TRANSITIONS=130} [2023-08-26 23:08:53,389 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2023-08-26 23:08:53,389 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 130 transitions, 1111 flow [2023-08-26 23:08:53,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.69230769230768) internal successors, (3168), 13 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:53,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:53,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:53,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:53,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:53,600 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:53,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash 141413116, now seen corresponding path program 2 times [2023-08-26 23:08:53,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:53,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267276840] [2023-08-26 23:08:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:08:53,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:53,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267276840] [2023-08-26 23:08:53,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267276840] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:53,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453499745] [2023-08-26 23:08:53,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:08:53,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:53,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:53,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:53,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 23:08:53,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:08:53,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:08:53,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:08:53,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 23:08:53,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:08:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-26 23:08:53,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453499745] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:08:53,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:08:53,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-26 23:08:53,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160412931] [2023-08-26 23:08:53,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:08:53,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 23:08:53,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:53,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 23:08:53,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 23:08:53,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 686 [2023-08-26 23:08:53,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 130 transitions, 1111 flow. Second operand has 6 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:53,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:53,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 686 [2023-08-26 23:08:53,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:56,098 INFO L124 PetriNetUnfolderBase]: 16838/24773 cut-off events. [2023-08-26 23:08:56,098 INFO L125 PetriNetUnfolderBase]: For 53671/53671 co-relation queries the response was YES. [2023-08-26 23:08:56,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75544 conditions, 24773 events. 16838/24773 cut-off events. For 53671/53671 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 150848 event pairs, 5909 based on Foata normal form. 0/23257 useless extension candidates. Maximal degree in co-relation 75496. Up to 12367 conditions per place. [2023-08-26 23:08:56,239 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 198 selfloop transitions, 9 changer transitions 0/207 dead transitions. [2023-08-26 23:08:56,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 207 transitions, 1868 flow [2023-08-26 23:08:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:08:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:08:56,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1767 transitions. [2023-08-26 23:08:56,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4293002915451895 [2023-08-26 23:08:56,242 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1767 transitions. [2023-08-26 23:08:56,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1767 transitions. [2023-08-26 23:08:56,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:56,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1767 transitions. [2023-08-26 23:08:56,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 294.5) internal successors, (1767), 6 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:56,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:56,247 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:56,247 INFO L175 Difference]: Start difference. First operand has 127 places, 130 transitions, 1111 flow. Second operand 6 states and 1767 transitions. [2023-08-26 23:08:56,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 207 transitions, 1868 flow [2023-08-26 23:08:56,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 207 transitions, 1790 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 23:08:56,327 INFO L231 Difference]: Finished difference. Result has 128 places, 131 transitions, 1075 flow [2023-08-26 23:08:56,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1075, PETRI_PLACES=128, PETRI_TRANSITIONS=131} [2023-08-26 23:08:56,328 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2023-08-26 23:08:56,328 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 131 transitions, 1075 flow [2023-08-26 23:08:56,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:56,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:56,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:08:56,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:56,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:56,529 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:56,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1267145843, now seen corresponding path program 1 times [2023-08-26 23:08:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495453187] [2023-08-26 23:08:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:56,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:08:56,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495453187] [2023-08-26 23:08:56,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495453187] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:56,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138890833] [2023-08-26 23:08:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:56,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:56,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:56,578 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:56,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 23:08:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:56,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:08:56,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:56,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:08:56,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:08:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138890833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:08:56,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:08:56,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 10 [2023-08-26 23:08:56,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143298042] [2023-08-26 23:08:56,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:08:56,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 23:08:56,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:56,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 23:08:56,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-26 23:08:56,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:08:56,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 131 transitions, 1075 flow. Second operand has 12 states, 12 states have (on average 244.25) internal successors, (2931), 12 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:56,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:56,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:08:56,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:08:58,935 INFO L124 PetriNetUnfolderBase]: 13472/20195 cut-off events. [2023-08-26 23:08:58,935 INFO L125 PetriNetUnfolderBase]: For 50834/50834 co-relation queries the response was YES. [2023-08-26 23:08:58,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62992 conditions, 20195 events. 13472/20195 cut-off events. For 50834/50834 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 124567 event pairs, 5475 based on Foata normal form. 622/20401 useless extension candidates. Maximal degree in co-relation 62943. Up to 6104 conditions per place. [2023-08-26 23:08:59,041 INFO L140 encePairwiseOnDemand]: 675/686 looper letters, 271 selfloop transitions, 29 changer transitions 0/300 dead transitions. [2023-08-26 23:08:59,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 300 transitions, 2714 flow [2023-08-26 23:08:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 23:08:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 23:08:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3027 transitions. [2023-08-26 23:08:59,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36771137026239065 [2023-08-26 23:08:59,046 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3027 transitions. [2023-08-26 23:08:59,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3027 transitions. [2023-08-26 23:08:59,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:08:59,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3027 transitions. [2023-08-26 23:08:59,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 252.25) internal successors, (3027), 12 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:59,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:59,058 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 686.0) internal successors, (8918), 13 states have internal predecessors, (8918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:59,058 INFO L175 Difference]: Start difference. First operand has 128 places, 131 transitions, 1075 flow. Second operand 12 states and 3027 transitions. [2023-08-26 23:08:59,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 300 transitions, 2714 flow [2023-08-26 23:08:59,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 300 transitions, 2659 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-26 23:08:59,145 INFO L231 Difference]: Finished difference. Result has 138 places, 142 transitions, 1324 flow [2023-08-26 23:08:59,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1324, PETRI_PLACES=138, PETRI_TRANSITIONS=142} [2023-08-26 23:08:59,146 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2023-08-26 23:08:59,146 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 142 transitions, 1324 flow [2023-08-26 23:08:59,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 244.25) internal successors, (2931), 12 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:59,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:08:59,147 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-26 23:08:59,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 23:08:59,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:59,352 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:08:59,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:08:59,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1505992103, now seen corresponding path program 1 times [2023-08-26 23:08:59,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:08:59,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230675067] [2023-08-26 23:08:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:59,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:08:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:08:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230675067] [2023-08-26 23:08:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230675067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:08:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369672721] [2023-08-26 23:08:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:08:59,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:08:59,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:08:59,538 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:08:59,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 23:08:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:08:59,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-26 23:08:59,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:08:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:59,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:08:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:08:59,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369672721] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:08:59,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:08:59,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-26 23:08:59,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867669993] [2023-08-26 23:08:59,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:08:59,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 23:08:59,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:08:59,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 23:08:59,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-26 23:08:59,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 686 [2023-08-26 23:08:59,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 142 transitions, 1324 flow. Second operand has 25 states, 25 states have (on average 271.12) internal successors, (6778), 25 states have internal predecessors, (6778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:08:59,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:08:59,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 686 [2023-08-26 23:08:59,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:09:01,952 INFO L124 PetriNetUnfolderBase]: 13628/20507 cut-off events. [2023-08-26 23:09:01,953 INFO L125 PetriNetUnfolderBase]: For 54560/54560 co-relation queries the response was YES. [2023-08-26 23:09:02,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64413 conditions, 20507 events. 13628/20507 cut-off events. For 54560/54560 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 126655 event pairs, 10095 based on Foata normal form. 108/20199 useless extension candidates. Maximal degree in co-relation 64361. Up to 20142 conditions per place. [2023-08-26 23:09:02,076 INFO L140 encePairwiseOnDemand]: 678/686 looper letters, 50 selfloop transitions, 176 changer transitions 0/226 dead transitions. [2023-08-26 23:09:02,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 226 transitions, 2484 flow [2023-08-26 23:09:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 23:09:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 23:09:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6656 transitions. [2023-08-26 23:09:02,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042759961127308 [2023-08-26 23:09:02,083 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6656 transitions. [2023-08-26 23:09:02,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6656 transitions. [2023-08-26 23:09:02,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:09:02,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6656 transitions. [2023-08-26 23:09:02,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 277.3333333333333) internal successors, (6656), 24 states have internal predecessors, (6656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:02,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 686.0) internal successors, (17150), 25 states have internal predecessors, (17150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:02,102 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 686.0) internal successors, (17150), 25 states have internal predecessors, (17150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:02,102 INFO L175 Difference]: Start difference. First operand has 138 places, 142 transitions, 1324 flow. Second operand 24 states and 6656 transitions. [2023-08-26 23:09:02,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 226 transitions, 2484 flow [2023-08-26 23:09:02,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 226 transitions, 2446 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-26 23:09:02,186 INFO L231 Difference]: Finished difference. Result has 169 places, 226 transitions, 2594 flow [2023-08-26 23:09:02,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2594, PETRI_PLACES=169, PETRI_TRANSITIONS=226} [2023-08-26 23:09:02,186 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2023-08-26 23:09:02,186 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 226 transitions, 2594 flow [2023-08-26 23:09:02,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 271.12) internal successors, (6778), 25 states have internal predecessors, (6778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:02,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:09:02,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:09:02,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 23:09:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-26 23:09:02,388 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:09:02,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:09:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash 205907828, now seen corresponding path program 1 times [2023-08-26 23:09:02,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:09:02,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288266385] [2023-08-26 23:09:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:02,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:09:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 23:09:02,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:09:02,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288266385] [2023-08-26 23:09:02,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288266385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:09:02,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36682414] [2023-08-26 23:09:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:02,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:09:02,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:09:02,635 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:09:02,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 23:09:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:02,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:09:02,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:09:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 23:09:02,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:09:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 23:09:02,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36682414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:09:02,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:09:02,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2023-08-26 23:09:02,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479485345] [2023-08-26 23:09:02,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:09:02,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 23:09:02,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:09:02,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 23:09:02,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-26 23:09:02,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 686 [2023-08-26 23:09:02,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 226 transitions, 2594 flow. Second operand has 13 states, 13 states have (on average 243.84615384615384) internal successors, (3170), 13 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:02,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:09:02,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 686 [2023-08-26 23:09:02,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:09:05,422 INFO L124 PetriNetUnfolderBase]: 14709/22112 cut-off events. [2023-08-26 23:09:05,422 INFO L125 PetriNetUnfolderBase]: For 50529/50529 co-relation queries the response was YES. [2023-08-26 23:09:05,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69492 conditions, 22112 events. 14709/22112 cut-off events. For 50529/50529 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 135709 event pairs, 5235 based on Foata normal form. 162/22020 useless extension candidates. Maximal degree in co-relation 69429. Up to 6309 conditions per place. [2023-08-26 23:09:05,604 INFO L140 encePairwiseOnDemand]: 676/686 looper letters, 380 selfloop transitions, 56 changer transitions 0/436 dead transitions. [2023-08-26 23:09:05,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 436 transitions, 5012 flow [2023-08-26 23:09:05,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 23:09:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 23:09:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3278 transitions. [2023-08-26 23:09:05,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3675712043058982 [2023-08-26 23:09:05,609 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3278 transitions. [2023-08-26 23:09:05,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3278 transitions. [2023-08-26 23:09:05,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:09:05,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3278 transitions. [2023-08-26 23:09:05,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 252.15384615384616) internal successors, (3278), 13 states have internal predecessors, (3278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:05,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 686.0) internal successors, (9604), 14 states have internal predecessors, (9604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:05,621 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 686.0) internal successors, (9604), 14 states have internal predecessors, (9604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:05,621 INFO L175 Difference]: Start difference. First operand has 169 places, 226 transitions, 2594 flow. Second operand 13 states and 3278 transitions. [2023-08-26 23:09:05,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 436 transitions, 5012 flow [2023-08-26 23:09:05,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 436 transitions, 4276 flow, removed 200 selfloop flow, removed 11 redundant places. [2023-08-26 23:09:05,765 INFO L231 Difference]: Finished difference. Result has 172 places, 229 transitions, 2279 flow [2023-08-26 23:09:05,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2279, PETRI_PLACES=172, PETRI_TRANSITIONS=229} [2023-08-26 23:09:05,765 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 129 predicate places. [2023-08-26 23:09:05,765 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 229 transitions, 2279 flow [2023-08-26 23:09:05,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.84615384615384) internal successors, (3170), 13 states have internal predecessors, (3170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:05,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:09:05,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:09:05,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 23:09:05,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-26 23:09:05,967 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:09:05,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:09:05,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1375293532, now seen corresponding path program 1 times [2023-08-26 23:09:05,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:09:05,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524363154] [2023-08-26 23:09:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:05,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:09:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:09:06,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:09:06,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524363154] [2023-08-26 23:09:06,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524363154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:09:06,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679801803] [2023-08-26 23:09:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:06,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:09:06,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:09:06,034 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:09:06,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 23:09:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:06,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:09:06,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:09:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:09:06,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:09:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-26 23:09:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679801803] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:09:06,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:09:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-26 23:09:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181456517] [2023-08-26 23:09:06,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:09:06,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:09:06,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:09:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:09:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 23:09:06,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 686 [2023-08-26 23:09:06,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 229 transitions, 2279 flow. Second operand has 7 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:06,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:09:06,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 686 [2023-08-26 23:09:06,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:09:09,646 INFO L124 PetriNetUnfolderBase]: 24735/36362 cut-off events. [2023-08-26 23:09:09,647 INFO L125 PetriNetUnfolderBase]: For 98366/98366 co-relation queries the response was YES. [2023-08-26 23:09:10,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116702 conditions, 36362 events. 24735/36362 cut-off events. For 98366/98366 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 229217 event pairs, 5897 based on Foata normal form. 1248/37176 useless extension candidates. Maximal degree in co-relation 116637. Up to 12441 conditions per place. [2023-08-26 23:09:10,246 INFO L140 encePairwiseOnDemand]: 683/686 looper letters, 341 selfloop transitions, 6 changer transitions 0/347 dead transitions. [2023-08-26 23:09:10,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 347 transitions, 3636 flow [2023-08-26 23:09:10,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:09:10,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:09:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1805 transitions. [2023-08-26 23:09:10,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43853255587949463 [2023-08-26 23:09:10,249 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1805 transitions. [2023-08-26 23:09:10,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1805 transitions. [2023-08-26 23:09:10,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:09:10,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1805 transitions. [2023-08-26 23:09:10,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:10,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:10,254 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:10,254 INFO L175 Difference]: Start difference. First operand has 172 places, 229 transitions, 2279 flow. Second operand 6 states and 1805 transitions. [2023-08-26 23:09:10,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 347 transitions, 3636 flow [2023-08-26 23:09:10,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 347 transitions, 3522 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-26 23:09:10,504 INFO L231 Difference]: Finished difference. Result has 174 places, 232 transitions, 2234 flow [2023-08-26 23:09:10,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2189, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2234, PETRI_PLACES=174, PETRI_TRANSITIONS=232} [2023-08-26 23:09:10,504 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2023-08-26 23:09:10,505 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 232 transitions, 2234 flow [2023-08-26 23:09:10,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:10,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:09:10,505 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:09:10,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 23:09:10,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-26 23:09:10,706 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:09:10,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:09:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash -726356740, now seen corresponding path program 2 times [2023-08-26 23:09:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:09:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315357142] [2023-08-26 23:09:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:09:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:10,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 23:09:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:09:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315357142] [2023-08-26 23:09:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315357142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:09:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466668406] [2023-08-26 23:09:10,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 23:09:10,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:09:10,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:09:10,861 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:09:10,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 23:09:11,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 23:09:11,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 23:09:11,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 23:09:11,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:09:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:09:11,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:09:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 23:09:11,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466668406] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:09:11,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:09:11,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-08-26 23:09:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856480615] [2023-08-26 23:09:11,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:09:11,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 23:09:11,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:09:11,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 23:09:11,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-26 23:09:11,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 686 [2023-08-26 23:09:11,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 232 transitions, 2234 flow. Second operand has 11 states, 11 states have (on average 237.63636363636363) internal successors, (2614), 11 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:11,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:09:11,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 686 [2023-08-26 23:09:11,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:09:17,999 INFO L124 PetriNetUnfolderBase]: 37595/55461 cut-off events. [2023-08-26 23:09:17,999 INFO L125 PetriNetUnfolderBase]: For 180833/180833 co-relation queries the response was YES. [2023-08-26 23:09:18,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183195 conditions, 55461 events. 37595/55461 cut-off events. For 180833/180833 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 376144 event pairs, 13348 based on Foata normal form. 1092/56553 useless extension candidates. Maximal degree in co-relation 183127. Up to 10838 conditions per place. [2023-08-26 23:09:18,669 INFO L140 encePairwiseOnDemand]: 678/686 looper letters, 535 selfloop transitions, 49 changer transitions 0/584 dead transitions. [2023-08-26 23:09:18,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 584 transitions, 5725 flow [2023-08-26 23:09:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 23:09:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 23:09:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3493 transitions. [2023-08-26 23:09:18,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36370262390670555 [2023-08-26 23:09:18,672 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3493 transitions. [2023-08-26 23:09:18,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3493 transitions. [2023-08-26 23:09:18,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:09:18,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3493 transitions. [2023-08-26 23:09:18,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 249.5) internal successors, (3493), 14 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:18,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 686.0) internal successors, (10290), 15 states have internal predecessors, (10290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:18,683 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 686.0) internal successors, (10290), 15 states have internal predecessors, (10290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:18,683 INFO L175 Difference]: Start difference. First operand has 174 places, 232 transitions, 2234 flow. Second operand 14 states and 3493 transitions. [2023-08-26 23:09:18,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 584 transitions, 5725 flow [2023-08-26 23:09:19,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 584 transitions, 5483 flow, removed 63 selfloop flow, removed 7 redundant places. [2023-08-26 23:09:19,095 INFO L231 Difference]: Finished difference. Result has 180 places, 234 transitions, 2310 flow [2023-08-26 23:09:19,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2310, PETRI_PLACES=180, PETRI_TRANSITIONS=234} [2023-08-26 23:09:19,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2023-08-26 23:09:19,096 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 234 transitions, 2310 flow [2023-08-26 23:09:19,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 237.63636363636363) internal successors, (2614), 11 states have internal predecessors, (2614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:19,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:09:19,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:09:19,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 23:09:19,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-26 23:09:19,298 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:09:19,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:09:19,299 INFO L85 PathProgramCache]: Analyzing trace with hash 812660271, now seen corresponding path program 1 times [2023-08-26 23:09:19,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:09:19,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531409284] [2023-08-26 23:09:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:19,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:09:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:09:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:09:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531409284] [2023-08-26 23:09:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531409284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:09:20,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:09:20,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:09:20,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968779021] [2023-08-26 23:09:20,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:09:20,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:09:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:09:20,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:09:20,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 23:09:20,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 686 [2023-08-26 23:09:20,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 234 transitions, 2310 flow. Second operand has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:20,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:09:20,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 686 [2023-08-26 23:09:20,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:09:26,779 INFO L124 PetriNetUnfolderBase]: 37595/55440 cut-off events. [2023-08-26 23:09:26,779 INFO L125 PetriNetUnfolderBase]: For 166280/166280 co-relation queries the response was YES. [2023-08-26 23:09:27,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178994 conditions, 55440 events. 37595/55440 cut-off events. For 166280/166280 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 375141 event pairs, 29578 based on Foata normal form. 21/55461 useless extension candidates. Maximal degree in co-relation 178929. Up to 53022 conditions per place. [2023-08-26 23:09:27,401 INFO L140 encePairwiseOnDemand]: 682/686 looper letters, 270 selfloop transitions, 3 changer transitions 51/324 dead transitions. [2023-08-26 23:09:27,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 324 transitions, 3544 flow [2023-08-26 23:09:27,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:09:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:09:27,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 987 transitions. [2023-08-26 23:09:27,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3596938775510204 [2023-08-26 23:09:27,403 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 987 transitions. [2023-08-26 23:09:27,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 987 transitions. [2023-08-26 23:09:27,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:09:27,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 987 transitions. [2023-08-26 23:09:27,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 246.75) internal successors, (987), 4 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) [2023-08-26 23:09:27,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:27,406 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 686.0) internal successors, (3430), 5 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:27,406 INFO L175 Difference]: Start difference. First operand has 180 places, 234 transitions, 2310 flow. Second operand 4 states and 987 transitions. [2023-08-26 23:09:27,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 324 transitions, 3544 flow [2023-08-26 23:09:27,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 324 transitions, 3461 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-08-26 23:09:27,580 INFO L231 Difference]: Finished difference. Result has 179 places, 230 transitions, 2198 flow [2023-08-26 23:09:27,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2198, PETRI_PLACES=179, PETRI_TRANSITIONS=230} [2023-08-26 23:09:27,581 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2023-08-26 23:09:27,581 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 230 transitions, 2198 flow [2023-08-26 23:09:27,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:27,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:09:27,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:09:27,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 23:09:27,581 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:09:27,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:09:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash -753199067, now seen corresponding path program 1 times [2023-08-26 23:09:27,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:09:27,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717219788] [2023-08-26 23:09:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:27,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:09:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:09:27,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:09:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717219788] [2023-08-26 23:09:27,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717219788] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:09:27,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330917296] [2023-08-26 23:09:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:27,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:09:27,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:09:27,869 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:09:27,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 23:09:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:28,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 23:09:28,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:09:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:09:28,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:09:28,321 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:09:28,322 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-26 23:09:33,144 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:33,604 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:35,444 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:35,533 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,015 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,280 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,391 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,426 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,472 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,516 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:36,546 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,595 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,632 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,696 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,750 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:36,799 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:36,855 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,050 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,154 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,227 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,376 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,527 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,573 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:37,615 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,687 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,708 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,828 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,874 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,896 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:37,915 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,938 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:37,969 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,141 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,164 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,185 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:38,219 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,250 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,364 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,478 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,550 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,593 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,635 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:38,699 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:38,755 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:39,062 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:39,336 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:39,489 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:39,598 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:40,120 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:40,821 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:41,795 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:41,906 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,080 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,109 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:46,139 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,213 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,248 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,317 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,347 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:46,383 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,475 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:46,562 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:46,616 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,688 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:46,757 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,814 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:46,979 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:47,050 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:47,121 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:47,177 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:47,186 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:47,268 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:47,277 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:47,534 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:47,821 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:48,369 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:48,480 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:48,496 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:48,524 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:48,548 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:48,570 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:48,600 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:48,628 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:48,998 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:49,689 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:49,715 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:49,747 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:49,781 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-08-26 23:09:49,830 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-08-26 23:09:50,013 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:09:50,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 118 [2023-08-26 23:09:50,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:09:50,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330917296] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 23:09:50,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 23:09:50,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 9 [2023-08-26 23:09:50,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972456615] [2023-08-26 23:09:50,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:09:50,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:09:50,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:09:50,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:09:50,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-26 23:09:50,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 686 [2023-08-26 23:09:50,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 230 transitions, 2198 flow. Second operand has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:50,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:09:50,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 686 [2023-08-26 23:09:50,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:09:58,300 INFO L124 PetriNetUnfolderBase]: 46207/69672 cut-off events. [2023-08-26 23:09:58,300 INFO L125 PetriNetUnfolderBase]: For 196871/196871 co-relation queries the response was YES. [2023-08-26 23:09:58,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217080 conditions, 69672 events. 46207/69672 cut-off events. For 196871/196871 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 514115 event pairs, 18172 based on Foata normal form. 127/69799 useless extension candidates. Maximal degree in co-relation 217014. Up to 31661 conditions per place. [2023-08-26 23:09:59,114 INFO L140 encePairwiseOnDemand]: 679/686 looper letters, 288 selfloop transitions, 11 changer transitions 57/356 dead transitions. [2023-08-26 23:09:59,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 356 transitions, 3682 flow [2023-08-26 23:09:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:09:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:09:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1249 transitions. [2023-08-26 23:09:59,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641399416909621 [2023-08-26 23:09:59,116 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1249 transitions. [2023-08-26 23:09:59,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1249 transitions. [2023-08-26 23:09:59,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:09:59,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1249 transitions. [2023-08-26 23:09:59,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.8) internal successors, (1249), 5 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:59,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:59,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 686.0) internal successors, (4116), 6 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:59,119 INFO L175 Difference]: Start difference. First operand has 179 places, 230 transitions, 2198 flow. Second operand 5 states and 1249 transitions. [2023-08-26 23:09:59,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 356 transitions, 3682 flow [2023-08-26 23:09:59,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 356 transitions, 3677 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:09:59,322 INFO L231 Difference]: Finished difference. Result has 184 places, 225 transitions, 2194 flow [2023-08-26 23:09:59,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2194, PETRI_PLACES=184, PETRI_TRANSITIONS=225} [2023-08-26 23:09:59,323 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2023-08-26 23:09:59,323 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 225 transitions, 2194 flow [2023-08-26 23:09:59,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:09:59,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:09:59,324 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] [2023-08-26 23:09:59,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 23:09:59,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:09:59,524 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:09:59,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:09:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1281837083, now seen corresponding path program 1 times [2023-08-26 23:09:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:09:59,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567009325] [2023-08-26 23:09:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:59,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:09:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:59,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:09:59,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:09:59,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567009325] [2023-08-26 23:09:59,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567009325] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:09:59,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910115879] [2023-08-26 23:09:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:09:59,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:09:59,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:09:59,730 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:09:59,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 23:09:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:09:59,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 23:09:59,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:10:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:10:00,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:10:00,293 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:10:00,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-26 23:10:24,705 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:10:24,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 118 [2023-08-26 23:10:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:10:25,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910115879] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 23:10:25,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 23:10:25,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 14 [2023-08-26 23:10:25,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247558482] [2023-08-26 23:10:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:10:25,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:10:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:10:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:10:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-08-26 23:10:25,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 686 [2023-08-26 23:10:25,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 225 transitions, 2194 flow. Second operand has 7 states, 7 states have (on average 226.14285714285714) internal successors, (1583), 7 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:25,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:10:25,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 686 [2023-08-26 23:10:25,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:10:33,220 INFO L124 PetriNetUnfolderBase]: 45115/70002 cut-off events. [2023-08-26 23:10:33,220 INFO L125 PetriNetUnfolderBase]: For 260828/260828 co-relation queries the response was YES. [2023-08-26 23:10:33,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235489 conditions, 70002 events. 45115/70002 cut-off events. For 260828/260828 co-relation queries the response was YES. Maximal size of possible extension queue 2021. Compared 546169 event pairs, 12488 based on Foata normal form. 184/70186 useless extension candidates. Maximal degree in co-relation 235420. Up to 24868 conditions per place. [2023-08-26 23:10:34,095 INFO L140 encePairwiseOnDemand]: 677/686 looper letters, 275 selfloop transitions, 48 changer transitions 48/371 dead transitions. [2023-08-26 23:10:34,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 371 transitions, 3891 flow [2023-08-26 23:10:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:10:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:10:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1660 transitions. [2023-08-26 23:10:34,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456892961266139 [2023-08-26 23:10:34,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1660 transitions. [2023-08-26 23:10:34,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1660 transitions. [2023-08-26 23:10:34,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:10:34,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1660 transitions. [2023-08-26 23:10:34,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.14285714285714) internal successors, (1660), 7 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:34,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 686.0) internal successors, (5488), 8 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:34,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 686.0) internal successors, (5488), 8 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:34,101 INFO L175 Difference]: Start difference. First operand has 184 places, 225 transitions, 2194 flow. Second operand 7 states and 1660 transitions. [2023-08-26 23:10:34,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 371 transitions, 3891 flow [2023-08-26 23:10:34,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 371 transitions, 3813 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-08-26 23:10:34,567 INFO L231 Difference]: Finished difference. Result has 187 places, 233 transitions, 2390 flow [2023-08-26 23:10:34,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2390, PETRI_PLACES=187, PETRI_TRANSITIONS=233} [2023-08-26 23:10:34,568 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2023-08-26 23:10:34,568 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 233 transitions, 2390 flow [2023-08-26 23:10:34,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 226.14285714285714) internal successors, (1583), 7 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:34,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:10:34,568 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] [2023-08-26 23:10:34,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-26 23:10:34,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-26 23:10:34,774 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:10:34,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:10:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2015304472, now seen corresponding path program 1 times [2023-08-26 23:10:34,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:10:34,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432690694] [2023-08-26 23:10:34,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:10:34,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:10:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:10:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:10:34,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:10:34,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432690694] [2023-08-26 23:10:34,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432690694] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:10:34,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82539389] [2023-08-26 23:10:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:10:34,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:10:34,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:10:34,961 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:10:34,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 23:10:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:10:35,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-26 23:10:35,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:10:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:10:35,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:10:35,381 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:10:35,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-26 23:10:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:10:40,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82539389] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 23:10:40,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 23:10:40,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-08-26 23:10:40,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638994246] [2023-08-26 23:10:40,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 23:10:40,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 23:10:40,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:10:40,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 23:10:40,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-08-26 23:10:40,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 686 [2023-08-26 23:10:40,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 233 transitions, 2390 flow. Second operand has 14 states, 14 states have (on average 239.78571428571428) internal successors, (3357), 14 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:40,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:10:40,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 686 [2023-08-26 23:10:40,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:10:49,909 INFO L124 PetriNetUnfolderBase]: 47515/74574 cut-off events. [2023-08-26 23:10:49,909 INFO L125 PetriNetUnfolderBase]: For 282455/282455 co-relation queries the response was YES. [2023-08-26 23:10:50,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264683 conditions, 74574 events. 47515/74574 cut-off events. For 282455/282455 co-relation queries the response was YES. Maximal size of possible extension queue 2282. Compared 601376 event pairs, 13840 based on Foata normal form. 136/74710 useless extension candidates. Maximal degree in co-relation 264613. Up to 24404 conditions per place. [2023-08-26 23:10:50,961 INFO L140 encePairwiseOnDemand]: 678/686 looper letters, 216 selfloop transitions, 86 changer transitions 71/373 dead transitions. [2023-08-26 23:10:50,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 373 transitions, 4015 flow [2023-08-26 23:10:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 23:10:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 23:10:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1979 transitions. [2023-08-26 23:10:50,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606049562682216 [2023-08-26 23:10:50,963 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1979 transitions. [2023-08-26 23:10:50,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1979 transitions. [2023-08-26 23:10:50,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:10:50,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1979 transitions. [2023-08-26 23:10:50,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 247.375) internal successors, (1979), 8 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:50,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 686.0) internal successors, (6174), 9 states have internal predecessors, (6174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:50,969 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 686.0) internal successors, (6174), 9 states have internal predecessors, (6174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:50,969 INFO L175 Difference]: Start difference. First operand has 187 places, 233 transitions, 2390 flow. Second operand 8 states and 1979 transitions. [2023-08-26 23:10:50,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 373 transitions, 4015 flow [2023-08-26 23:10:51,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 373 transitions, 3947 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-26 23:10:51,528 INFO L231 Difference]: Finished difference. Result has 193 places, 225 transitions, 2398 flow [2023-08-26 23:10:51,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2398, PETRI_PLACES=193, PETRI_TRANSITIONS=225} [2023-08-26 23:10:51,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2023-08-26 23:10:51,529 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 225 transitions, 2398 flow [2023-08-26 23:10:51,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 239.78571428571428) internal successors, (3357), 14 states have internal predecessors, (3357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:51,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:10:51,530 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] [2023-08-26 23:10:51,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 23:10:51,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-26 23:10:51,734 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:10:51,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:10:51,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1362381337, now seen corresponding path program 1 times [2023-08-26 23:10:51,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:10:51,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648176511] [2023-08-26 23:10:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:10:51,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:10:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:10:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:10:52,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:10:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648176511] [2023-08-26 23:10:52,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648176511] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:10:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144312820] [2023-08-26 23:10:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:10:52,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:10:52,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:10:52,661 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:10:52,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 23:10:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:10:52,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-26 23:10:52,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:10:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:10:53,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:10:53,376 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:10:53,376 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 262 [2023-08-26 23:10:54,300 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:10:54,300 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 118 [2023-08-26 23:10:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 23:10:54,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144312820] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-26 23:10:54,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-26 23:10:54,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2023-08-26 23:10:54,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853524618] [2023-08-26 23:10:54,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:10:54,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 23:10:54,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:10:54,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 23:10:54,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-08-26 23:10:54,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 686 [2023-08-26 23:10:54,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 225 transitions, 2398 flow. Second operand has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:10:54,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:10:54,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 686 [2023-08-26 23:10:54,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:11:01,606 INFO L124 PetriNetUnfolderBase]: 37943/58397 cut-off events. [2023-08-26 23:11:01,606 INFO L125 PetriNetUnfolderBase]: For 229207/229207 co-relation queries the response was YES. [2023-08-26 23:11:02,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207742 conditions, 58397 events. 37943/58397 cut-off events. For 229207/229207 co-relation queries the response was YES. Maximal size of possible extension queue 1678. Compared 432370 event pairs, 17692 based on Foata normal form. 12/58409 useless extension candidates. Maximal degree in co-relation 207670. Up to 55153 conditions per place. [2023-08-26 23:11:02,347 INFO L140 encePairwiseOnDemand]: 681/686 looper letters, 238 selfloop transitions, 13 changer transitions 3/254 dead transitions. [2023-08-26 23:11:02,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 3116 flow [2023-08-26 23:11:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:11:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:11:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-08-26 23:11:02,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3396501457725947 [2023-08-26 23:11:02,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-08-26 23:11:02,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-08-26 23:11:02,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:11:02,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-08-26 23:11:02,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:11:02,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:11:02,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:11:02,351 INFO L175 Difference]: Start difference. First operand has 193 places, 225 transitions, 2398 flow. Second operand 3 states and 699 transitions. [2023-08-26 23:11:02,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 3116 flow [2023-08-26 23:11:02,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 254 transitions, 2990 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-26 23:11:02,820 INFO L231 Difference]: Finished difference. Result has 183 places, 237 transitions, 2492 flow [2023-08-26 23:11:02,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2492, PETRI_PLACES=183, PETRI_TRANSITIONS=237} [2023-08-26 23:11:02,821 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 140 predicate places. [2023-08-26 23:11:02,821 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 237 transitions, 2492 flow [2023-08-26 23:11:02,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:11:02,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:11:02,822 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] [2023-08-26 23:11:02,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 23:11:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 23:11:03,023 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 23:11:03,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:11:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 377571798, now seen corresponding path program 1 times [2023-08-26 23:11:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:11:03,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460073050] [2023-08-26 23:11:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:11:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:11:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:11:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 23:11:04,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:11:04,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460073050] [2023-08-26 23:11:04,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460073050] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 23:11:04,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075625308] [2023-08-26 23:11:04,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:11:04,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:11:04,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:11:04,305 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 23:11:04,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 23:11:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:11:04,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-26 23:11:04,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 23:11:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:11:04,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:11:04,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:11:04,577 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-26 23:11:04,577 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-26 23:11:04,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 23:11:04,730 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-26 23:11:04,730 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-26 23:11:04,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-26 23:11:04,929 INFO L322 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-26 23:11:04,929 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-26 23:11:05,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 23:11:05,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 23:11:05,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-26 23:11:05,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 23:11:05,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-26 23:11:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:11:05,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 23:11:07,039 WARN L839 $PredicateComparison]: unable to prove that (or (< (+ c_~i_AB~0 1) c_~An~0) (let ((.cse14 (* c_~i_BC~0 4))) (let ((.cse3 (+ c_~B~0.offset (* c_~i_AB~0 4))) (.cse4 (+ .cse14 c_~B~0.offset)) (.cse6 (+ c_~C~0.offset .cse14)) (.cse7 (= c_~An~0 c_~i_AC~0))) (and (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse2 (select .cse5 c_~B~0.base))) (let ((.cse0 (select (select .cse5 ~C~0.base) .cse6)) (.cse1 (select .cse2 .cse4))) (or (< .cse0 .cse1) (< (select .cse2 .cse3) |c_thread1Thread1of1ForFork0_#t~mem1|) (= .cse0 .cse1)))))) (< c_~i_AC~0 c_~Cn~0) .cse7) (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse13 (select .cse10 c_~B~0.base)) (.cse12 (select .cse10 ~C~0.base))) (let ((.cse8 (select .cse12 .cse6)) (.cse9 (select .cse13 .cse4))) (or (< .cse8 .cse9) (let ((.cse11 (* c_~i_AC~0 4))) (<= (select (select .cse10 c_~A~0.base) (+ c_~A~0.offset .cse11)) (select .cse12 (+ c_~C~0.offset .cse11)))) (< (select .cse13 .cse3) |c_thread1Thread1of1ForFork0_#t~mem1|) (= .cse8 .cse9)))))) .cse7)))) (<= c_~Cn~0 c_~i_BC~0)) is different from false [2023-08-26 23:11:07,236 WARN L839 $PredicateComparison]: unable to prove that (or (< (+ c_~i_AB~0 1) c_~An~0) (let ((.cse17 (* c_~i_BC~0 4)) (.cse18 (* c_~i_AB~0 4))) (let ((.cse6 (+ c_~B~0.offset .cse18)) (.cse8 (+ c_~A~0.offset .cse18)) (.cse9 (+ .cse17 c_~B~0.offset)) (.cse10 (+ c_~C~0.offset .cse17)) (.cse11 (= c_~An~0 c_~i_AC~0))) (and (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int) (v_ArrVal_1284 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284))) (let ((.cse2 (store .cse7 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse5 (select .cse2 c_~B~0.base)) (.cse4 (select .cse2 ~C~0.base))) (let ((.cse0 (select .cse4 .cse10)) (.cse1 (select .cse5 .cse9))) (or (< .cse0 .cse1) (let ((.cse3 (* c_~i_AC~0 4))) (<= (select (select .cse2 c_~A~0.base) (+ c_~A~0.offset .cse3)) (select .cse4 (+ c_~C~0.offset .cse3)))) (< (select .cse5 .cse6) (select (select .cse7 c_~A~0.base) .cse8)) (= .cse0 .cse1))))))) .cse11) (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int) (v_ArrVal_1284 (Array Int Int))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284))) (let ((.cse16 (store .cse15 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse14 (select .cse16 c_~B~0.base))) (let ((.cse12 (select (select .cse16 ~C~0.base) .cse10)) (.cse13 (select .cse14 .cse9))) (or (< .cse12 .cse13) (< (select .cse14 .cse6) (select (select .cse15 c_~A~0.base) .cse8)) (= .cse12 .cse13))))))) (< c_~i_AC~0 c_~Cn~0) .cse11)))) (<= c_~Cn~0 c_~i_BC~0)) is different from false [2023-08-26 23:11:07,327 WARN L839 $PredicateComparison]: unable to prove that (or (< (+ c_~i_AB~0 1) c_~An~0) (let ((.cse17 (* c_~i_BC~0 4)) (.cse18 (* c_~i_AB~0 4))) (let ((.cse1 (+ c_~B~0.offset .cse18)) (.cse3 (+ c_~A~0.offset .cse18)) (.cse6 (+ .cse17 c_~B~0.offset)) (.cse8 (+ .cse17 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse9 (= c_~An~0 c_~i_AC~0))) (and (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int) (v_ArrVal_1284 (Array Int Int)) (v_ArrVal_1283 (Array Int Int))) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1283) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284))) (let ((.cse7 (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse0 (select .cse7 c_~B~0.base))) (let ((.cse4 (select (select .cse7 ~C~0.base) .cse8)) (.cse5 (select .cse0 .cse6))) (or (< (select .cse0 .cse1) (select (select .cse2 c_~A~0.base) .cse3)) (= .cse4 .cse5) (< .cse4 .cse5))))))) (< c_~i_AC~0 c_~Cn~0) .cse9) (or (forall ((v_ArrVal_1285 (Array Int Int)) (~C~0.base Int) (v_ArrVal_1284 (Array Int Int)) (v_ArrVal_1283 (Array Int Int))) (let ((.cse11 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1283) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1284))) (let ((.cse12 (store .cse11 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1285))) (let ((.cse10 (select .cse12 c_~B~0.base)) (.cse14 (select .cse12 ~C~0.base))) (let ((.cse15 (select .cse14 .cse8)) (.cse16 (select .cse10 .cse6))) (or (< (select .cse10 .cse1) (select (select .cse11 c_~A~0.base) .cse3)) (let ((.cse13 (* c_~i_AC~0 4))) (<= (select (select .cse12 c_~A~0.base) (+ c_~A~0.offset .cse13)) (select .cse14 (+ .cse13 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (= .cse15 .cse16) (< .cse15 .cse16))))))) .cse9)))) (<= c_~Cn~0 c_~i_BC~0)) is different from false [2023-08-26 23:11:08,381 INFO L322 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2023-08-26 23:11:08,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 151 [2023-08-26 23:11:08,387 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-26 23:11:08,562 INFO L322 Elim1Store]: treesize reduction 16, result has 87.9 percent of original size [2023-08-26 23:11:08,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81242 treesize of output 75461 [2023-08-26 23:11:08,930 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:11:08,931 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4888 treesize of output 4790 [2023-08-26 23:11:09,044 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:11:09,045 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4776 treesize of output 4166 [2023-08-26 23:11:09,287 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:11:09,288 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4136 treesize of output 3814 [2023-08-26 23:11:09,399 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 23:11:09,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3784 treesize of output 3152 Received shutdown request... [2023-08-26 23:22:00,824 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-26 23:22:00,825 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-26 23:22:00,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 23:22:00,849 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 23:22:00,849 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 23:22:01,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 23:22:01,026 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. [2023-08-26 23:22:01,028 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 23:22:01,028 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 23:22:01,028 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 23:22:01,028 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-26 23:22:01,028 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 23:22:01,028 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 23:22:01,028 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 23:22:01,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 23:22:01,030 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 23:22:01,030 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 23:22:01,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 23:22:01,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 23:22:01,034 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:22:01,038 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 23:22:01,038 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 23:22:01,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:22:01 BasicIcfg [2023-08-26 23:22:01,040 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 23:22:01,040 INFO L158 Benchmark]: Toolchain (without parser) took 817924.97ms. Allocated memory was 333.4MB in the beginning and 14.5GB in the end (delta: 14.2GB). Free memory was 309.8MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 13.0GB. Max. memory is 16.0GB. [2023-08-26 23:22:01,042 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 333.4MB. Free memory is still 310.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 23:22:01,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.46ms. Allocated memory is still 333.4MB. Free memory was 309.3MB in the beginning and 297.7MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 23:22:01,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.63ms. Allocated memory is still 333.4MB. Free memory was 297.7MB in the beginning and 295.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 23:22:01,043 INFO L158 Benchmark]: Boogie Preprocessor took 47.79ms. Allocated memory is still 333.4MB. Free memory was 295.2MB in the beginning and 293.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 23:22:01,043 INFO L158 Benchmark]: RCFGBuilder took 630.99ms. Allocated memory is still 333.4MB. Free memory was 293.1MB in the beginning and 268.4MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-26 23:22:01,049 INFO L158 Benchmark]: TraceAbstraction took 816937.29ms. Allocated memory was 333.4MB in the beginning and 14.5GB in the end (delta: 14.2GB). Free memory was 267.9MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 12.9GB. Max. memory is 16.0GB. [2023-08-26 23:22:01,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 333.4MB. Free memory is still 310.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 247.46ms. Allocated memory is still 333.4MB. Free memory was 309.3MB in the beginning and 297.7MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.63ms. Allocated memory is still 333.4MB. Free memory was 297.7MB in the beginning and 295.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.79ms. Allocated memory is still 333.4MB. Free memory was 295.2MB in the beginning and 293.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 630.99ms. Allocated memory is still 333.4MB. Free memory was 293.1MB in the beginning and 268.4MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 816937.29ms. Allocated memory was 333.4MB in the beginning and 14.5GB in the end (delta: 14.2GB). Free memory was 267.9MB in the beginning and 1.8GB in the end (delta: -1.6GB). Peak memory consumption was 12.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.9s, 282 PlacesBefore, 43 PlacesAfterwards, 302 TransitionsBefore, 41 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 8 FixpointIterations, 204 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 65 TrivialYvCompositions, 14 ConcurrentYvCompositions, 22 ChoiceCompositions, 370 TotalNumberOfCompositions, 6119 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4806, independent: 4674, independent conditional: 0, independent unconditional: 4674, dependent: 132, dependent conditional: 0, dependent unconditional: 132, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2283, independent: 2257, independent conditional: 0, independent unconditional: 2257, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4806, independent: 2417, independent conditional: 0, independent unconditional: 2417, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 2283, unknown conditional: 0, unknown unconditional: 2283] , Statistics on independence cache: Total cache size (in pairs): 129, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 26 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 87ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 344 locations, 22 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: 816.8s, OverallIterations: 30, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 80.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3100 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3100 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 540 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4451 IncrementalHoareTripleChecker+Invalid, 4991 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 540 mSolverCounterUnsat, 0 mSDtfsCounter, 4451 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 593 GetRequests, 317 SyntacticMatches, 14 SemanticMatches, 262 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2594occurred in iteration=21, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 60.3s InterpolantComputationTime, 585 NumberOfCodeBlocks, 557 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 5963 SizeOfPredicates, 74 NumberOfNonLiveVariables, 3775 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 60 InterpolantComputations, 18 PerfectInterpolantSequences, 202/508 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown