/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:07:33,035 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:07:33,108 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 02:07:33,113 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:07:33,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:07:33,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:07:33,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:07:33,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:07:33,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:07:33,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:07:33,154 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:07:33,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:07:33,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:07:33,156 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:07:33,156 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:07:33,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:07:33,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:07:33,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:07:33,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:07:33,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:07:33,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:07:33,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:07:33,159 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:07:33,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:07:33,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:07:33,160 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:07:33,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:07:33,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:07:33,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:07:33,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:07:33,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:07:33,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:07:33,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:07:33,162 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:07:33,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:07:33,163 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:07:33,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:07:33,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:07:33,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:07:33,539 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:07:33,539 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:07:33,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-27 02:07:34,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:07:35,001 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:07:35,001 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-08-27 02:07:35,008 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f4db9dc/dc8da98a02f542deb1838107e0a9db86/FLAG361672e8b [2023-08-27 02:07:35,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f4db9dc/dc8da98a02f542deb1838107e0a9db86 [2023-08-27 02:07:35,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:07:35,030 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:07:35,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:07:35,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:07:35,036 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:07:35,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df4021d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35, skipping insertion in model container [2023-08-27 02:07:35,039 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,056 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:07:35,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:07:35,225 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:07:35,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:07:35,262 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:07:35,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35 WrapperNode [2023-08-27 02:07:35,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:07:35,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:07:35,264 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:07:35,264 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:07:35,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,275 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,294 INFO L138 Inliner]: procedures = 21, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2023-08-27 02:07:35,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:07:35,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:07:35,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:07:35,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:07:35,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:07:35,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:07:35,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:07:35,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:07:35,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (1/1) ... [2023-08-27 02:07:35,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:07:35,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:35,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 02:07:35,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 02:07:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:07:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:07:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:07:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:07:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:07:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:07:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:07:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:07:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:07:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:07:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:07:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:07:35,397 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:07:35,465 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:07:35,466 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:07:35,686 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:07:35,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:07:35,692 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:07:35,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:07:35 BoogieIcfgContainer [2023-08-27 02:07:35,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:07:35,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:07:35,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:07:35,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:07:35,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:07:35" (1/3) ... [2023-08-27 02:07:35,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34dcfda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:07:35, skipping insertion in model container [2023-08-27 02:07:35,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:07:35" (2/3) ... [2023-08-27 02:07:35,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34dcfda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:07:35, skipping insertion in model container [2023-08-27 02:07:35,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:07:35" (3/3) ... [2023-08-27 02:07:35,701 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-08-27 02:07:35,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:07:35,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-27 02:07:35,715 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:07:35,805 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:07:35,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 88 transitions, 192 flow [2023-08-27 02:07:35,906 INFO L124 PetriNetUnfolderBase]: 6/86 cut-off events. [2023-08-27 02:07:35,906 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:07:35,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 6/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-27 02:07:35,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 88 transitions, 192 flow [2023-08-27 02:07:35,920 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 77 transitions, 166 flow [2023-08-27 02:07:35,923 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:07:35,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 77 transitions, 166 flow [2023-08-27 02:07:35,942 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 77 transitions, 166 flow [2023-08-27 02:07:35,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 166 flow [2023-08-27 02:07:35,981 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-08-27 02:07:35,982 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:07:35,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 6/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-08-27 02:07:35,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 648 [2023-08-27 02:07:38,131 INFO L134 LiptonReduction]: Checked pairs total: 762 [2023-08-27 02:07:38,131 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-27 02:07:38,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:07:38,148 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;@4f947ef4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:07:38,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-27 02:07:38,150 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:07:38,151 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-08-27 02:07:38,151 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:07:38,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:38,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 02:07:38,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:38,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash 328250, now seen corresponding path program 1 times [2023-08-27 02:07:38,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:38,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167292333] [2023-08-27 02:07:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:38,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167292333] [2023-08-27 02:07:38,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167292333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:38,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:07:38,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:07:38,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564168086] [2023-08-27 02:07:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:38,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:07:38,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:38,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:07:38,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:07:38,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 163 [2023-08-27 02:07:38,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:38,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 163 [2023-08-27 02:07:38,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:38,459 INFO L124 PetriNetUnfolderBase]: 29/54 cut-off events. [2023-08-27 02:07:38,459 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 02:07:38,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 54 events. 29/54 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 15 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 80. Up to 54 conditions per place. [2023-08-27 02:07:38,462 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-27 02:07:38,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-08-27 02:07:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:07:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:07:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-08-27 02:07:38,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4703476482617587 [2023-08-27 02:07:38,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-08-27 02:07:38,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-08-27 02:07:38,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:38,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-08-27 02:07:38,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,493 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 230 transitions. [2023-08-27 02:07:38,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-08-27 02:07:38,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:07:38,498 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 34 flow [2023-08-27 02:07:38,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2023-08-27 02:07:38,502 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -5 predicate places. [2023-08-27 02:07:38,503 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 34 flow [2023-08-27 02:07:38,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:38,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 02:07:38,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:07:38,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:38,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash 315472757, now seen corresponding path program 1 times [2023-08-27 02:07:38,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14230313] [2023-08-27 02:07:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:38,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:38,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:38,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14230313] [2023-08-27 02:07:38,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14230313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:38,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:07:38,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:07:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867262935] [2023-08-27 02:07:38,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:38,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:07:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:38,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:07:38,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:07:38,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 163 [2023-08-27 02:07:38,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:38,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 163 [2023-08-27 02:07:38,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:38,671 INFO L124 PetriNetUnfolderBase]: 21/40 cut-off events. [2023-08-27 02:07:38,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 02:07:38,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 40 events. 21/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 81. Up to 40 conditions per place. [2023-08-27 02:07:38,672 INFO L140 encePairwiseOnDemand]: 161/163 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-27 02:07:38,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 13 transitions, 58 flow [2023-08-27 02:07:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:07:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:07:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2023-08-27 02:07:38,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46421267893660534 [2023-08-27 02:07:38,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2023-08-27 02:07:38,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2023-08-27 02:07:38,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:38,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2023-08-27 02:07:38,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,678 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 34 flow. Second operand 3 states and 227 transitions. [2023-08-27 02:07:38,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 13 transitions, 58 flow [2023-08-27 02:07:38,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:07:38,678 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 33 flow [2023-08-27 02:07:38,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-08-27 02:07:38,679 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -5 predicate places. [2023-08-27 02:07:38,679 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 33 flow [2023-08-27 02:07:38,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:38,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:38,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:07:38,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:38,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:38,681 INFO L85 PathProgramCache]: Analyzing trace with hash -360370300, now seen corresponding path program 1 times [2023-08-27 02:07:38,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:38,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729962322] [2023-08-27 02:07:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:38,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:38,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729962322] [2023-08-27 02:07:38,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729962322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:38,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:07:38,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 02:07:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313380665] [2023-08-27 02:07:38,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:38,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:07:38,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:38,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:07:38,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:07:38,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:38,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:38,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:38,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:38,916 INFO L124 PetriNetUnfolderBase]: 41/77 cut-off events. [2023-08-27 02:07:38,917 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:07:38,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 77 events. 41/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 162 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 157. Up to 51 conditions per place. [2023-08-27 02:07:38,918 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-08-27 02:07:38,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 23 transitions, 102 flow [2023-08-27 02:07:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:07:38,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:07:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-08-27 02:07:38,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44785276073619634 [2023-08-27 02:07:38,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-08-27 02:07:38,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-08-27 02:07:38,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:38,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-08-27 02:07:38,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,931 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 33 flow. Second operand 3 states and 219 transitions. [2023-08-27 02:07:38,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 23 transitions, 102 flow [2023-08-27 02:07:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 23 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:07:38,932 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 51 flow [2023-08-27 02:07:38,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-08-27 02:07:38,933 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2023-08-27 02:07:38,934 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 51 flow [2023-08-27 02:07:38,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:38,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:38,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:38,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:07:38,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:38,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 164816032, now seen corresponding path program 1 times [2023-08-27 02:07:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185316219] [2023-08-27 02:07:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:39,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185316219] [2023-08-27 02:07:39,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185316219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:39,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:07:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:07:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326470482] [2023-08-27 02:07:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:07:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:07:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 02:07:39,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:39,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 51 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:39,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:39,155 INFO L124 PetriNetUnfolderBase]: 35/71 cut-off events. [2023-08-27 02:07:39,156 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-27 02:07:39,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 71 events. 35/71 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 157 event pairs, 6 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 170. Up to 45 conditions per place. [2023-08-27 02:07:39,157 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 15 selfloop transitions, 3 changer transitions 10/28 dead transitions. [2023-08-27 02:07:39,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 28 transitions, 137 flow [2023-08-27 02:07:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:07:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:07:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2023-08-27 02:07:39,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4447852760736196 [2023-08-27 02:07:39,158 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2023-08-27 02:07:39,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2023-08-27 02:07:39,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:39,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2023-08-27 02:07:39,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,162 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,162 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 51 flow. Second operand 4 states and 290 transitions. [2023-08-27 02:07:39,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 28 transitions, 137 flow [2023-08-27 02:07:39,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 134 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:07:39,163 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 61 flow [2023-08-27 02:07:39,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=61, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-27 02:07:39,164 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 0 predicate places. [2023-08-27 02:07:39,164 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 61 flow [2023-08-27 02:07:39,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:39,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:39,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:07:39,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:39,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1492920295, now seen corresponding path program 1 times [2023-08-27 02:07:39,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:39,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084481529] [2023-08-27 02:07:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:39,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:39,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:39,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084481529] [2023-08-27 02:07:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084481529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084078303] [2023-08-27 02:07:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:39,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:39,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:39,241 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:07:39,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:07:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:39,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 02:07:39,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:07:39,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:39,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:07:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:39,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084078303] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:39,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 02:07:39,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-08-27 02:07:39,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713586910] [2023-08-27 02:07:39,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:39,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:07:39,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:07:39,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 02:07:39,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:39,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:39,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:39,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:39,487 INFO L124 PetriNetUnfolderBase]: 40/79 cut-off events. [2023-08-27 02:07:39,487 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-27 02:07:39,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 79 events. 40/79 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 2 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 222. Up to 39 conditions per place. [2023-08-27 02:07:39,488 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-27 02:07:39,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 30 transitions, 167 flow [2023-08-27 02:07:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:07:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:07:39,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2023-08-27 02:07:39,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4447852760736196 [2023-08-27 02:07:39,490 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2023-08-27 02:07:39,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2023-08-27 02:07:39,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:39,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2023-08-27 02:07:39,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,493 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,493 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 61 flow. Second operand 4 states and 290 transitions. [2023-08-27 02:07:39,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 30 transitions, 167 flow [2023-08-27 02:07:39,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 30 transitions, 157 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 02:07:39,495 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 90 flow [2023-08-27 02:07:39,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-08-27 02:07:39,495 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-08-27 02:07:39,496 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 90 flow [2023-08-27 02:07:39,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:39,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:39,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 02:07:39,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:39,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:39,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 779968096, now seen corresponding path program 2 times [2023-08-27 02:07:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238645350] [2023-08-27 02:07:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:39,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:39,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:39,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238645350] [2023-08-27 02:07:39,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238645350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:39,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913662281] [2023-08-27 02:07:39,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:07:39,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:39,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:39,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:07:39,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:07:39,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:07:39,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:07:39,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 02:07:39,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:07:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:39,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:07:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:39,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913662281] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:39,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 02:07:39,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-08-27 02:07:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226308606] [2023-08-27 02:07:39,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:39,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:07:39,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:07:39,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:07:39,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:39,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:39,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:39,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:39,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:40,075 INFO L124 PetriNetUnfolderBase]: 76/156 cut-off events. [2023-08-27 02:07:40,075 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2023-08-27 02:07:40,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 156 events. 76/156 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 508 event pairs, 4 based on Foata normal form. 1/157 useless extension candidates. Maximal degree in co-relation 514. Up to 64 conditions per place. [2023-08-27 02:07:40,079 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 35 selfloop transitions, 9 changer transitions 2/46 dead transitions. [2023-08-27 02:07:40,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 46 transitions, 287 flow [2023-08-27 02:07:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:07:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:07:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-08-27 02:07:40,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503067484662577 [2023-08-27 02:07:40,081 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-08-27 02:07:40,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-08-27 02:07:40,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:40,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-08-27 02:07:40,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,085 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,085 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 90 flow. Second operand 5 states and 367 transitions. [2023-08-27 02:07:40,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 46 transitions, 287 flow [2023-08-27 02:07:40,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 46 transitions, 287 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:07:40,090 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 174 flow [2023-08-27 02:07:40,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-27 02:07:40,092 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 10 predicate places. [2023-08-27 02:07:40,092 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 174 flow [2023-08-27 02:07:40,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:40,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:40,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 02:07:40,298 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,SelfDestructingSolverStorable5 [2023-08-27 02:07:40,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:40,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:40,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1781654983, now seen corresponding path program 1 times [2023-08-27 02:07:40,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:40,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101496250] [2023-08-27 02:07:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:40,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:40,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:40,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101496250] [2023-08-27 02:07:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101496250] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:40,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555709050] [2023-08-27 02:07:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:40,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:40,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:40,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:07:40,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 02:07:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:40,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 02:07:40,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:07:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:40,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:07:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:40,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555709050] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:07:40,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:07:40,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-08-27 02:07:40,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351033101] [2023-08-27 02:07:40,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:07:40,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 02:07:40,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:40,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 02:07:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:07:40,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:40,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 174 flow. Second operand has 10 states, 10 states have (on average 68.7) internal successors, (687), 10 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:40,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:40,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:40,836 INFO L124 PetriNetUnfolderBase]: 124/248 cut-off events. [2023-08-27 02:07:40,836 INFO L125 PetriNetUnfolderBase]: For 725/725 co-relation queries the response was YES. [2023-08-27 02:07:40,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 248 events. 124/248 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 945 event pairs, 4 based on Foata normal form. 29/277 useless extension candidates. Maximal degree in co-relation 1018. Up to 83 conditions per place. [2023-08-27 02:07:40,838 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 25 selfloop transitions, 13 changer transitions 38/76 dead transitions. [2023-08-27 02:07:40,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 76 transitions, 624 flow [2023-08-27 02:07:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 02:07:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 02:07:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 776 transitions. [2023-08-27 02:07:40,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327941996653653 [2023-08-27 02:07:40,841 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 776 transitions. [2023-08-27 02:07:40,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 776 transitions. [2023-08-27 02:07:40,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:40,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 776 transitions. [2023-08-27 02:07:40,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 70.54545454545455) internal successors, (776), 11 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,846 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,846 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 174 flow. Second operand 11 states and 776 transitions. [2023-08-27 02:07:40,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 76 transitions, 624 flow [2023-08-27 02:07:40,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 76 transitions, 616 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 02:07:40,851 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 249 flow [2023-08-27 02:07:40,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=249, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2023-08-27 02:07:40,851 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 26 predicate places. [2023-08-27 02:07:40,851 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 249 flow [2023-08-27 02:07:40,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.7) internal successors, (687), 10 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:40,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:40,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:40,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 02:07:41,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:41,058 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:41,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:41,058 INFO L85 PathProgramCache]: Analyzing trace with hash -495007417, now seen corresponding path program 2 times [2023-08-27 02:07:41,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:41,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361507959] [2023-08-27 02:07:41,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:41,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:41,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361507959] [2023-08-27 02:07:41,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361507959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:41,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087717830] [2023-08-27 02:07:41,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:07:41,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:41,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:41,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:07:41,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 02:07:41,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:07:41,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:07:41,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 02:07:41,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:07:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:41,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:07:41,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087717830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:41,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:07:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-08-27 02:07:41,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233638878] [2023-08-27 02:07:41,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:41,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:07:41,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:41,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:07:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:07:41,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:41,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:41,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:41,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:41,346 INFO L124 PetriNetUnfolderBase]: 48/94 cut-off events. [2023-08-27 02:07:41,347 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2023-08-27 02:07:41,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 94 events. 48/94 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 204 event pairs, 6 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 500. Up to 41 conditions per place. [2023-08-27 02:07:41,348 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 27 selfloop transitions, 4 changer transitions 10/41 dead transitions. [2023-08-27 02:07:41,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 406 flow [2023-08-27 02:07:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:07:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:07:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2023-08-27 02:07:41,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284253578732106 [2023-08-27 02:07:41,351 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 419 transitions. [2023-08-27 02:07:41,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 419 transitions. [2023-08-27 02:07:41,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:41,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 419 transitions. [2023-08-27 02:07:41,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,354 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,354 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 249 flow. Second operand 6 states and 419 transitions. [2023-08-27 02:07:41,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 406 flow [2023-08-27 02:07:41,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 337 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-08-27 02:07:41,359 INFO L231 Difference]: Finished difference. Result has 44 places, 25 transitions, 185 flow [2023-08-27 02:07:41,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2023-08-27 02:07:41,361 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 22 predicate places. [2023-08-27 02:07:41,362 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 185 flow [2023-08-27 02:07:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:41,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:41,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 02:07:41,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:41,570 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:41,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2058141291, now seen corresponding path program 3 times [2023-08-27 02:07:41,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:41,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716880148] [2023-08-27 02:07:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:41,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:41,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716880148] [2023-08-27 02:07:41,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716880148] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:41,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756604941] [2023-08-27 02:07:41,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:07:41,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:41,706 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:07:41,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 02:07:41,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-27 02:07:41,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:07:41,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 02:07:41,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:07:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:41,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:07:41,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756604941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:07:41,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:07:41,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-08-27 02:07:41,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666195608] [2023-08-27 02:07:41,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:07:41,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 02:07:41,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 02:07:41,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-08-27 02:07:41,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:41,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:41,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:41,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:41,900 INFO L124 PetriNetUnfolderBase]: 50/106 cut-off events. [2023-08-27 02:07:41,900 INFO L125 PetriNetUnfolderBase]: For 648/648 co-relation queries the response was YES. [2023-08-27 02:07:41,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 106 events. 50/106 cut-off events. For 648/648 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 265 event pairs, 10 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 506. Up to 34 conditions per place. [2023-08-27 02:07:41,902 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 31 selfloop transitions, 7 changer transitions 5/43 dead transitions. [2023-08-27 02:07:41,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 377 flow [2023-08-27 02:07:41,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 02:07:41,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 02:07:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 422 transitions. [2023-08-27 02:07:41,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43149284253578735 [2023-08-27 02:07:41,904 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 422 transitions. [2023-08-27 02:07:41,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 422 transitions. [2023-08-27 02:07:41,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:41,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 422 transitions. [2023-08-27 02:07:41,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,908 INFO L175 Difference]: Start difference. First operand has 44 places, 25 transitions, 185 flow. Second operand 6 states and 422 transitions. [2023-08-27 02:07:41,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 377 flow [2023-08-27 02:07:41,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 339 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-27 02:07:41,911 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 213 flow [2023-08-27 02:07:41,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2023-08-27 02:07:41,912 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 22 predicate places. [2023-08-27 02:07:41,912 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 213 flow [2023-08-27 02:07:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.16666666666667) internal successors, (403), 6 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:41,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:41,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:41,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 02:07:42,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:42,119 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:42,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:42,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2080426881, now seen corresponding path program 4 times [2023-08-27 02:07:42,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:42,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145238903] [2023-08-27 02:07:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:42,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:42,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:42,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145238903] [2023-08-27 02:07:42,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145238903] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:42,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152444692] [2023-08-27 02:07:42,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 02:07:42,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:42,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:42,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:07:42,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 02:07:42,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 02:07:42,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:07:42,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 02:07:42,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:07:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:42,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:07:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:07:42,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152444692] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:07:42,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:07:42,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 2] total 9 [2023-08-27 02:07:42,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381858600] [2023-08-27 02:07:42,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:07:42,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 02:07:42,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 02:07:42,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:07:42,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:42,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 213 flow. Second operand has 10 states, 10 states have (on average 68.5) internal successors, (685), 10 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:42,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:42,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:42,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:42,520 INFO L124 PetriNetUnfolderBase]: 70/143 cut-off events. [2023-08-27 02:07:42,520 INFO L125 PetriNetUnfolderBase]: For 659/659 co-relation queries the response was YES. [2023-08-27 02:07:42,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 143 events. 70/143 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 434 event pairs, 0 based on Foata normal form. 6/149 useless extension candidates. Maximal degree in co-relation 701. Up to 73 conditions per place. [2023-08-27 02:07:42,521 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 19 selfloop transitions, 3 changer transitions 30/52 dead transitions. [2023-08-27 02:07:42,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 504 flow [2023-08-27 02:07:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:07:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:07:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 494 transitions. [2023-08-27 02:07:42,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329535495179667 [2023-08-27 02:07:42,524 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 494 transitions. [2023-08-27 02:07:42,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 494 transitions. [2023-08-27 02:07:42,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:42,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 494 transitions. [2023-08-27 02:07:42,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:42,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:42,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:42,527 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 213 flow. Second operand 7 states and 494 transitions. [2023-08-27 02:07:42,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 504 flow [2023-08-27 02:07:42,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 493 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 02:07:42,531 INFO L231 Difference]: Finished difference. Result has 50 places, 16 transitions, 122 flow [2023-08-27 02:07:42,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=16} [2023-08-27 02:07:42,531 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 28 predicate places. [2023-08-27 02:07:42,531 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 16 transitions, 122 flow [2023-08-27 02:07:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 68.5) internal successors, (685), 10 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:42,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:42,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:42,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 02:07:42,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:42,738 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:42,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:42,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1783640362, now seen corresponding path program 5 times [2023-08-27 02:07:42,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:42,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605505015] [2023-08-27 02:07:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:42,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:42,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605505015] [2023-08-27 02:07:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605505015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:42,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154867431] [2023-08-27 02:07:42,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 02:07:42,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:42,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:42,803 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:07:42,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 02:07:42,862 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:07:42,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:07:42,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 02:07:42,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:07:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:42,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:07:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:42,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154867431] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:07:42,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:07:42,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 02:07:42,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523768513] [2023-08-27 02:07:42,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:07:42,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-27 02:07:42,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:42,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-27 02:07:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-27 02:07:42,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:42,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 16 transitions, 122 flow. Second operand has 11 states, 11 states have (on average 67.63636363636364) internal successors, (744), 11 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:42,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:42,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:42,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:43,049 INFO L124 PetriNetUnfolderBase]: 20/53 cut-off events. [2023-08-27 02:07:43,050 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2023-08-27 02:07:43,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 53 events. 20/53 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 2 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 269. Up to 15 conditions per place. [2023-08-27 02:07:43,050 INFO L140 encePairwiseOnDemand]: 158/163 looper letters, 20 selfloop transitions, 6 changer transitions 5/31 dead transitions. [2023-08-27 02:07:43,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 31 transitions, 253 flow [2023-08-27 02:07:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 02:07:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 02:07:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 553 transitions. [2023-08-27 02:07:43,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424079754601227 [2023-08-27 02:07:43,053 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 553 transitions. [2023-08-27 02:07:43,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 553 transitions. [2023-08-27 02:07:43,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:43,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 553 transitions. [2023-08-27 02:07:43,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:43,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:43,057 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:43,057 INFO L175 Difference]: Start difference. First operand has 50 places, 16 transitions, 122 flow. Second operand 8 states and 553 transitions. [2023-08-27 02:07:43,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 31 transitions, 253 flow [2023-08-27 02:07:43,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 185 flow, removed 24 selfloop flow, removed 14 redundant places. [2023-08-27 02:07:43,058 INFO L231 Difference]: Finished difference. Result has 39 places, 17 transitions, 99 flow [2023-08-27 02:07:43,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=99, PETRI_PLACES=39, PETRI_TRANSITIONS=17} [2023-08-27 02:07:43,059 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 17 predicate places. [2023-08-27 02:07:43,059 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 17 transitions, 99 flow [2023-08-27 02:07:43,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.63636363636364) internal successors, (744), 11 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:43,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:07:43,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:07:43,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 02:07:43,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:43,268 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2023-08-27 02:07:43,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:07:43,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1697192190, now seen corresponding path program 6 times [2023-08-27 02:07:43,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:07:43,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46382430] [2023-08-27 02:07:43,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:07:43,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:07:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:07:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 02:07:43,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:07:43,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46382430] [2023-08-27 02:07:43,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46382430] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:07:43,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457686496] [2023-08-27 02:07:43,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 02:07:43,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:07:43,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:07:43,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:07:43,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 02:07:43,450 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-27 02:07:43,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:07:43,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-27 02:07:43,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:07:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:07:43,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:07:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:07:43,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457686496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:07:43,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:07:43,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 12 [2023-08-27 02:07:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659462494] [2023-08-27 02:07:43,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:07:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 02:07:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:07:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 02:07:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-27 02:07:43,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 163 [2023-08-27 02:07:43,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 17 transitions, 99 flow. Second operand has 13 states, 13 states have (on average 68.15384615384616) internal successors, (886), 13 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) [2023-08-27 02:07:43,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:07:43,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 163 [2023-08-27 02:07:43,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:07:43,758 INFO L124 PetriNetUnfolderBase]: 32/74 cut-off events. [2023-08-27 02:07:43,758 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2023-08-27 02:07:43,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 74 events. 32/74 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 152 event pairs, 2 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 315. Up to 23 conditions per place. [2023-08-27 02:07:43,758 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-27 02:07:43,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 272 flow [2023-08-27 02:07:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:07:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:07:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 622 transitions. [2023-08-27 02:07:43,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239945466939332 [2023-08-27 02:07:43,761 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 622 transitions. [2023-08-27 02:07:43,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 622 transitions. [2023-08-27 02:07:43,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:07:43,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 622 transitions. [2023-08-27 02:07:43,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 69.11111111111111) internal successors, (622), 9 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:43,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:43,765 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 02:07:43,765 INFO L175 Difference]: Start difference. First operand has 39 places, 17 transitions, 99 flow. Second operand 9 states and 622 transitions. [2023-08-27 02:07:43,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 272 flow [2023-08-27 02:07:43,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 251 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-27 02:07:43,766 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-27 02:07:43,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-27 02:07:43,767 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 19 predicate places. [2023-08-27 02:07:43,767 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-27 02:07:43,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 68.15384615384616) internal successors, (886), 13 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) [2023-08-27 02:07:43,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-08-27 02:07:43,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-27 02:07:43,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2023-08-27 02:07:43,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-27 02:07:43,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (6 of 11 remaining) [2023-08-27 02:07:43,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 11 remaining) [2023-08-27 02:07:43,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2023-08-27 02:07:43,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-27 02:07:43,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-27 02:07:43,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-27 02:07:43,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-27 02:07:43,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 02:07:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-27 02:07:43,980 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1] [2023-08-27 02:07:43,985 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:07:43,985 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:07:43,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:07:43 BasicIcfg [2023-08-27 02:07:43,987 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:07:43,987 INFO L158 Benchmark]: Toolchain (without parser) took 8957.52ms. Allocated memory was 383.8MB in the beginning and 474.0MB in the end (delta: 90.2MB). Free memory was 360.4MB in the beginning and 286.7MB in the end (delta: 73.7MB). Peak memory consumption was 166.1MB. Max. memory is 16.0GB. [2023-08-27 02:07:43,988 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 360.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:07:43,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.99ms. Allocated memory is still 383.8MB. Free memory was 360.4MB in the beginning and 350.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 02:07:43,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.97ms. Allocated memory is still 383.8MB. Free memory was 349.5MB in the beginning and 348.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:07:43,988 INFO L158 Benchmark]: Boogie Preprocessor took 31.12ms. Allocated memory is still 383.8MB. Free memory was 348.4MB in the beginning and 346.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:07:43,988 INFO L158 Benchmark]: RCFGBuilder took 367.01ms. Allocated memory is still 383.8MB. Free memory was 346.9MB in the beginning and 334.3MB in the end (delta: 12.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 02:07:43,989 INFO L158 Benchmark]: TraceAbstraction took 8291.35ms. Allocated memory was 383.8MB in the beginning and 474.0MB in the end (delta: 90.2MB). Free memory was 333.7MB in the beginning and 286.7MB in the end (delta: 47.1MB). Peak memory consumption was 138.8MB. Max. memory is 16.0GB. [2023-08-27 02:07:43,990 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 360.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 228.99ms. Allocated memory is still 383.8MB. Free memory was 360.4MB in the beginning and 350.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.97ms. Allocated memory is still 383.8MB. Free memory was 349.5MB in the beginning and 348.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 31.12ms. Allocated memory is still 383.8MB. Free memory was 348.4MB in the beginning and 346.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 367.01ms. Allocated memory is still 383.8MB. Free memory was 346.9MB in the beginning and 334.3MB in the end (delta: 12.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8291.35ms. Allocated memory was 383.8MB in the beginning and 474.0MB in the end (delta: 90.2MB). Free memory was 333.7MB in the beginning and 286.7MB in the end (delta: 47.1MB). Peak memory consumption was 138.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 78 PlacesBefore, 22 PlacesAfterwards, 77 TransitionsBefore, 17 TransitionsAfterwards, 648 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 75 TotalNumberOfCompositions, 762 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 762, independent: 762, independent conditional: 0, independent unconditional: 762, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 354, independent: 354, independent conditional: 0, independent unconditional: 354, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 762, independent: 408, independent conditional: 0, independent unconditional: 408, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 354, unknown conditional: 0, unknown unconditional: 354] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 11 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: 8.1s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 229 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 229 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 805 IncrementalHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 0 mSDtfsCounter, 805 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 157 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=7, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 SizeOfPredicates, 12 NumberOfNonLiveVariables, 900 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 26 InterpolantComputations, 8 PerfectInterpolantSequences, 21/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 02:07:44,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...