/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_46-escape_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 11:05:22,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 11:05:22,614 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 11:05:22,617 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 11:05:22,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 11:05:22,649 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 11:05:22,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 11:05:22,650 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 11:05:22,651 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 11:05:22,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 11:05:22,655 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 11:05:22,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 11:05:22,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 11:05:22,655 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 11:05:22,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 11:05:22,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 11:05:22,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 11:05:22,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 11:05:22,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 11:05:22,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 11:05:22,657 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 11:05:22,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 11:05:22,658 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 11:05:22,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 11:05:22,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 11:05:22,659 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 11:05:22,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 11:05:22,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:05:22,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 11:05:22,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 11:05:22,660 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 11:05:22,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 11:05:22,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 11:05:22,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 11:05:22,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 11:05:22,661 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 11:05:22,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 11:05:22,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 11:05:22,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 11:05:22,890 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 11:05:22,891 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 11:05:22,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_46-escape_nr.i [2023-08-27 11:05:23,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 11:05:24,065 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 11:05:24,066 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_46-escape_nr.i [2023-08-27 11:05:24,080 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b6e655a/325884fc2aa5456eaf18db7537a85ae0/FLAGe8ca17d9d [2023-08-27 11:05:24,092 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b6e655a/325884fc2aa5456eaf18db7537a85ae0 [2023-08-27 11:05:24,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 11:05:24,095 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 11:05:24,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 11:05:24,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 11:05:24,098 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 11:05:24,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,099 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786f73b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24, skipping insertion in model container [2023-08-27 11:05:24,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,133 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 11:05:24,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:05:24,455 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 11:05:24,476 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [246] [2023-08-27 11:05:24,478 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [246] [2023-08-27 11:05:24,482 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [738] [2023-08-27 11:05:24,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 11:05:24,555 INFO L206 MainTranslator]: Completed translation [2023-08-27 11:05:24,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24 WrapperNode [2023-08-27 11:05:24,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 11:05:24,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 11:05:24,556 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 11:05:24,556 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 11:05:24,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,605 INFO L138 Inliner]: procedures = 263, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2023-08-27 11:05:24,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 11:05:24,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 11:05:24,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 11:05:24,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 11:05:24,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,629 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 11:05:24,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 11:05:24,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 11:05:24,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 11:05:24,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (1/1) ... [2023-08-27 11:05:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 11:05:24,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 11:05:24,655 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 11:05:24,678 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 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 11:05:24,682 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 11:05:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 11:05:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 11:05:24,683 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 11:05:24,789 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 11:05:24,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 11:05:24,903 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 11:05:24,908 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 11:05:24,908 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 11:05:24,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:24 BoogieIcfgContainer [2023-08-27 11:05:24,909 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 11:05:24,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 11:05:24,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 11:05:24,914 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 11:05:24,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:05:24" (1/3) ... [2023-08-27 11:05:24,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b52757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:05:24, skipping insertion in model container [2023-08-27 11:05:24,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:05:24" (2/3) ... [2023-08-27 11:05:24,915 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b52757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:05:24, skipping insertion in model container [2023-08-27 11:05:24,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:05:24" (3/3) ... [2023-08-27 11:05:24,916 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_46-escape_nr.i [2023-08-27 11:05:24,927 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 11:05:24,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-27 11:05:24,927 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 11:05:24,988 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 11:05:25,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 172 flow [2023-08-27 11:05:25,048 INFO L124 PetriNetUnfolderBase]: 1/81 cut-off events. [2023-08-27 11:05:25,051 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:05:25,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 1/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 6. Up to 2 conditions per place. [2023-08-27 11:05:25,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 82 transitions, 172 flow [2023-08-27 11:05:25,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 65 transitions, 133 flow [2023-08-27 11:05:25,061 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 11:05:25,073 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 133 flow [2023-08-27 11:05:25,076 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 133 flow [2023-08-27 11:05:25,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 133 flow [2023-08-27 11:05:25,111 INFO L124 PetriNetUnfolderBase]: 0/65 cut-off events. [2023-08-27 11:05:25,111 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:25,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 0/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-27 11:05:25,112 INFO L119 LiptonReduction]: Number of co-enabled transitions 480 [2023-08-27 11:05:26,826 INFO L134 LiptonReduction]: Checked pairs total: 1143 [2023-08-27 11:05:26,826 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-27 11:05:26,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 11:05:26,843 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;@6d3bb460, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 11:05:26,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-27 11:05:26,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 11:05:26,845 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-27 11:05:26,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:26,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:26,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:05:26,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 11:05:26,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash 8346874, now seen corresponding path program 1 times [2023-08-27 11:05:26,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:26,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309211404] [2023-08-27 11:05:26,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:26,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:27,136 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 11:05:27,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309211404] [2023-08-27 11:05:27,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309211404] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:27,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:27,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 11:05:27,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864568910] [2023-08-27 11:05:27,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:27,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:27,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 140 [2023-08-27 11:05:27,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:27,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 140 [2023-08-27 11:05:27,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:27,219 INFO L124 PetriNetUnfolderBase]: 36/90 cut-off events. [2023-08-27 11:05:27,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 11:05:27,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 90 events. 36/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 294 event pairs, 16 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 176. Up to 55 conditions per place. [2023-08-27 11:05:27,221 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 17 selfloop transitions, 4 changer transitions 4/25 dead transitions. [2023-08-27 11:05:27,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 25 transitions, 103 flow [2023-08-27 11:05:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-08-27 11:05:27,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976190476190476 [2023-08-27 11:05:27,233 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-08-27 11:05:27,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-08-27 11:05:27,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:27,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-08-27 11:05:27,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,244 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 33 flow. Second operand 3 states and 209 transitions. [2023-08-27 11:05:27,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 25 transitions, 103 flow [2023-08-27 11:05:27,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 11:05:27,247 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 54 flow [2023-08-27 11:05:27,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=32, 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=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-27 11:05:27,250 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-27 11:05:27,251 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 54 flow [2023-08-27 11:05:27,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:27,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:05:27,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 11:05:27,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 11:05:27,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:27,254 INFO L85 PathProgramCache]: Analyzing trace with hash 8346752, now seen corresponding path program 1 times [2023-08-27 11:05:27,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:27,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747828496] [2023-08-27 11:05:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:27,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:27,400 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 11:05:27,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:27,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747828496] [2023-08-27 11:05:27,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747828496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:27,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:27,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323087663] [2023-08-27 11:05:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:05:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:05:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:05:27,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 140 [2023-08-27 11:05:27,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:27,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 140 [2023-08-27 11:05:27,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:27,483 INFO L124 PetriNetUnfolderBase]: 25/72 cut-off events. [2023-08-27 11:05:27,484 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-27 11:05:27,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 72 events. 25/72 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 257 event pairs, 3 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 166. Up to 39 conditions per place. [2023-08-27 11:05:27,484 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 18 selfloop transitions, 8 changer transitions 2/28 dead transitions. [2023-08-27 11:05:27,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 140 flow [2023-08-27 11:05:27,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:05:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:05:27,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 383 transitions. [2023-08-27 11:05:27,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45595238095238094 [2023-08-27 11:05:27,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 383 transitions. [2023-08-27 11:05:27,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 383 transitions. [2023-08-27 11:05:27,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:27,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 383 transitions. [2023-08-27 11:05:27,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.833333333333336) internal successors, (383), 6 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,490 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,490 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 54 flow. Second operand 6 states and 383 transitions. [2023-08-27 11:05:27,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 140 flow [2023-08-27 11:05:27,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:05:27,491 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 88 flow [2023-08-27 11:05:27,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-27 11:05:27,492 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2023-08-27 11:05:27,492 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 88 flow [2023-08-27 11:05:27,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:27,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 11:05:27,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 11:05:27,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 11:05:27,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash 8346765, now seen corresponding path program 1 times [2023-08-27 11:05:27,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:27,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837320920] [2023-08-27 11:05:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:27,560 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 11:05:27,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:27,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837320920] [2023-08-27 11:05:27,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837320920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:27,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:27,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096894629] [2023-08-27 11:05:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:27,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 11:05:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 11:05:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 11:05:27,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 140 [2023-08-27 11:05:27,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:27,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 140 [2023-08-27 11:05:27,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:27,628 INFO L124 PetriNetUnfolderBase]: 20/55 cut-off events. [2023-08-27 11:05:27,628 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-27 11:05:27,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 55 events. 20/55 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 151 event pairs, 3 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 150. Up to 34 conditions per place. [2023-08-27 11:05:27,629 INFO L140 encePairwiseOnDemand]: 131/140 looper letters, 15 selfloop transitions, 8 changer transitions 2/25 dead transitions. [2023-08-27 11:05:27,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 146 flow [2023-08-27 11:05:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 11:05:27,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 11:05:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 382 transitions. [2023-08-27 11:05:27,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45476190476190476 [2023-08-27 11:05:27,631 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 382 transitions. [2023-08-27 11:05:27,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 382 transitions. [2023-08-27 11:05:27,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:27,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 382 transitions. [2023-08-27 11:05:27,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.666666666666664) internal successors, (382), 6 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,635 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 88 flow. Second operand 6 states and 382 transitions. [2023-08-27 11:05:27,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 146 flow [2023-08-27 11:05:27,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 132 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:05:27,638 INFO L231 Difference]: Finished difference. Result has 30 places, 17 transitions, 82 flow [2023-08-27 11:05:27,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2023-08-27 11:05:27,639 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 11 predicate places. [2023-08-27 11:05:27,639 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 82 flow [2023-08-27 11:05:27,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:27,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:27,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 11:05:27,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 11:05:27,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash -445910494, now seen corresponding path program 1 times [2023-08-27 11:05:27,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:27,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763122763] [2023-08-27 11:05:27,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:27,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:27,705 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 11:05:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763122763] [2023-08-27 11:05:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763122763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:27,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:27,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 11:05:27,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010546408] [2023-08-27 11:05:27,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:27,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 11:05:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 11:05:27,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 11:05:27,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2023-08-27 11:05:27,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:27,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2023-08-27 11:05:27,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:27,730 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-27 11:05:27,730 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-27 11:05:27,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 19 events. 0/19 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 33 event pairs, 0 based on Foata normal form. 6/25 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2023-08-27 11:05:27,731 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 10 selfloop transitions, 5 changer transitions 0/16 dead transitions. [2023-08-27 11:05:27,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 16 transitions, 104 flow [2023-08-27 11:05:27,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 11:05:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 11:05:27,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-08-27 11:05:27,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2023-08-27 11:05:27,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-08-27 11:05:27,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-08-27 11:05:27,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:27,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-08-27 11:05:27,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,733 INFO L175 Difference]: Start difference. First operand has 30 places, 17 transitions, 82 flow. Second operand 3 states and 226 transitions. [2023-08-27 11:05:27,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 16 transitions, 104 flow [2023-08-27 11:05:27,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 92 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 11:05:27,734 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 72 flow [2023-08-27 11:05:27,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-27 11:05:27,735 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2023-08-27 11:05:27,736 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 72 flow [2023-08-27 11:05:27,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:27,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:27,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 11:05:27,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 11:05:27,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1045770325, now seen corresponding path program 1 times [2023-08-27 11:05:27,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:27,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933822133] [2023-08-27 11:05:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:27,809 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 11:05:27,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:27,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933822133] [2023-08-27 11:05:27,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933822133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:27,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:27,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:05:27,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632412104] [2023-08-27 11:05:27,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:27,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:05:27,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:27,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:05:27,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:05:27,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 140 [2023-08-27 11:05:27,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:27,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 140 [2023-08-27 11:05:27,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:27,881 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2023-08-27 11:05:27,882 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 11:05:27,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 26 events. 4/26 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 54 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 70. Up to 6 conditions per place. [2023-08-27 11:05:27,883 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 10 selfloop transitions, 8 changer transitions 3/21 dead transitions. [2023-08-27 11:05:27,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 21 transitions, 123 flow [2023-08-27 11:05:27,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:05:27,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:05:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 499 transitions. [2023-08-27 11:05:27,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396031746031746 [2023-08-27 11:05:27,888 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 499 transitions. [2023-08-27 11:05:27,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 499 transitions. [2023-08-27 11:05:27,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:27,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 499 transitions. [2023-08-27 11:05:27,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 55.44444444444444) internal successors, (499), 9 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,892 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,892 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 72 flow. Second operand 9 states and 499 transitions. [2023-08-27 11:05:27,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 21 transitions, 123 flow [2023-08-27 11:05:27,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 21 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 11:05:27,893 INFO L231 Difference]: Finished difference. Result has 33 places, 15 transitions, 74 flow [2023-08-27 11:05:27,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=74, PETRI_PLACES=33, PETRI_TRANSITIONS=15} [2023-08-27 11:05:27,895 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-08-27 11:05:27,895 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 15 transitions, 74 flow [2023-08-27 11:05:27,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:27,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:27,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:27,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 11:05:27,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 11:05:27,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash -945891782, now seen corresponding path program 1 times [2023-08-27 11:05:27,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:27,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487883635] [2023-08-27 11:05:27,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:27,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:28,024 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 11:05:28,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:28,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487883635] [2023-08-27 11:05:28,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487883635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:28,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:28,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:05:28,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766890065] [2023-08-27 11:05:28,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:28,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:05:28,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:05:28,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:05:28,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 140 [2023-08-27 11:05:28,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 15 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:28,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 140 [2023-08-27 11:05:28,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:28,088 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-08-27 11:05:28,088 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 11:05:28,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 20 events. 2/20 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-27 11:05:28,088 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 8 selfloop transitions, 8 changer transitions 1/17 dead transitions. [2023-08-27 11:05:28,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 17 transitions, 109 flow [2023-08-27 11:05:28,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 11:05:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 11:05:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 495 transitions. [2023-08-27 11:05:28,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2023-08-27 11:05:28,090 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 495 transitions. [2023-08-27 11:05:28,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 495 transitions. [2023-08-27 11:05:28,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:28,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 495 transitions. [2023-08-27 11:05:28,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 55.0) internal successors, (495), 9 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,094 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,094 INFO L175 Difference]: Start difference. First operand has 33 places, 15 transitions, 74 flow. Second operand 9 states and 495 transitions. [2023-08-27 11:05:28,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 17 transitions, 109 flow [2023-08-27 11:05:28,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 17 transitions, 91 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-27 11:05:28,095 INFO L231 Difference]: Finished difference. Result has 31 places, 14 transitions, 66 flow [2023-08-27 11:05:28,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=14} [2023-08-27 11:05:28,097 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 12 predicate places. [2023-08-27 11:05:28,097 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 14 transitions, 66 flow [2023-08-27 11:05:28,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:28,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:28,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 11:05:28,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 11:05:28,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:28,098 INFO L85 PathProgramCache]: Analyzing trace with hash -945891795, now seen corresponding path program 1 times [2023-08-27 11:05:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:28,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048314323] [2023-08-27 11:05:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:28,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:28,204 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 11:05:28,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048314323] [2023-08-27 11:05:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048314323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:28,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:28,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:05:28,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142250807] [2023-08-27 11:05:28,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 11:05:28,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:28,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 11:05:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 11:05:28,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 140 [2023-08-27 11:05:28,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 14 transitions, 66 flow. Second operand has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:28,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 140 [2023-08-27 11:05:28,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:28,250 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-08-27 11:05:28,250 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 11:05:28,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 16 events. 1/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 46. Up to 7 conditions per place. [2023-08-27 11:05:28,250 INFO L140 encePairwiseOnDemand]: 133/140 looper letters, 6 selfloop transitions, 2 changer transitions 6/14 dead transitions. [2023-08-27 11:05:28,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 14 transitions, 92 flow [2023-08-27 11:05:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:05:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:05:28,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 386 transitions. [2023-08-27 11:05:28,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39387755102040817 [2023-08-27 11:05:28,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 386 transitions. [2023-08-27 11:05:28,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 386 transitions. [2023-08-27 11:05:28,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:28,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 386 transitions. [2023-08-27 11:05:28,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 55.142857142857146) internal successors, (386), 7 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,254 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,254 INFO L175 Difference]: Start difference. First operand has 31 places, 14 transitions, 66 flow. Second operand 7 states and 386 transitions. [2023-08-27 11:05:28,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 14 transitions, 92 flow [2023-08-27 11:05:28,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 14 transitions, 74 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 11:05:28,255 INFO L231 Difference]: Finished difference. Result has 27 places, 8 transitions, 31 flow [2023-08-27 11:05:28,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31, PETRI_PLACES=27, PETRI_TRANSITIONS=8} [2023-08-27 11:05:28,255 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-08-27 11:05:28,255 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 8 transitions, 31 flow [2023-08-27 11:05:28,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 11:05:28,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:28,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 11:05:28,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 11:05:28,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 11:05:28,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1045770305, now seen corresponding path program 1 times [2023-08-27 11:05:28,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 11:05:28,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589054757] [2023-08-27 11:05:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 11:05:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 11:05:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 11:05:28,386 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 11:05:28,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 11:05:28,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589054757] [2023-08-27 11:05:28,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589054757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 11:05:28,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 11:05:28,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 11:05:28,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99944529] [2023-08-27 11:05:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 11:05:28,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 11:05:28,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 11:05:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 11:05:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 11:05:28,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 140 [2023-08-27 11:05:28,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 8 transitions, 31 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 11:05:28,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 140 [2023-08-27 11:05:28,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 11:05:28,428 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 11:05:28,428 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 11:05:28,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 8 events. 0/8 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-27 11:05:28,428 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-27 11:05:28,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 8 transitions, 45 flow [2023-08-27 11:05:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 11:05:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 11:05:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 380 transitions. [2023-08-27 11:05:28,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2023-08-27 11:05:28,430 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 380 transitions. [2023-08-27 11:05:28,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 380 transitions. [2023-08-27 11:05:28,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 11:05:28,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 380 transitions. [2023-08-27 11:05:28,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,433 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,433 INFO L175 Difference]: Start difference. First operand has 27 places, 8 transitions, 31 flow. Second operand 7 states and 380 transitions. [2023-08-27 11:05:28,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 8 transitions, 45 flow [2023-08-27 11:05:28,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 8 transitions, 39 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 11:05:28,435 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-27 11:05:28,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-27 11:05:28,436 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2023-08-27 11:05:28,436 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-27 11:05:28,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 11:05:28,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2023-08-27 11:05:28,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2023-08-27 11:05:28,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-27 11:05:28,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2023-08-27 11:05:28,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2023-08-27 11:05:28,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2023-08-27 11:05:28,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2023-08-27 11:05:28,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 11:05:28,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 11:05:28,448 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 11:05:28,448 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 11:05:28,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:05:28 BasicIcfg [2023-08-27 11:05:28,456 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 11:05:28,456 INFO L158 Benchmark]: Toolchain (without parser) took 4361.58ms. Allocated memory was 339.7MB in the beginning and 408.9MB in the end (delta: 69.2MB). Free memory was 314.6MB in the beginning and 205.0MB in the end (delta: 109.6MB). Peak memory consumption was 177.3MB. Max. memory is 16.0GB. [2023-08-27 11:05:28,457 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 339.7MB. Free memory was 318.0MB in the beginning and 317.9MB in the end (delta: 91.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 11:05:28,457 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.97ms. Allocated memory is still 339.7MB. Free memory was 314.6MB in the beginning and 287.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 11:05:28,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.10ms. Allocated memory is still 339.7MB. Free memory was 287.3MB in the beginning and 284.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:05:28,457 INFO L158 Benchmark]: Boogie Preprocessor took 26.04ms. Allocated memory is still 339.7MB. Free memory was 284.6MB in the beginning and 283.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 11:05:28,457 INFO L158 Benchmark]: RCFGBuilder took 277.06ms. Allocated memory is still 339.7MB. Free memory was 283.1MB in the beginning and 269.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 11:05:28,457 INFO L158 Benchmark]: TraceAbstraction took 3544.70ms. Allocated memory was 339.7MB in the beginning and 408.9MB in the end (delta: 69.2MB). Free memory was 269.0MB in the beginning and 205.0MB in the end (delta: 64.1MB). Peak memory consumption was 133.3MB. Max. memory is 16.0GB. [2023-08-27 11:05:28,458 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 339.7MB. Free memory was 318.0MB in the beginning and 317.9MB in the end (delta: 91.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 459.97ms. Allocated memory is still 339.7MB. Free memory was 314.6MB in the beginning and 287.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.10ms. Allocated memory is still 339.7MB. Free memory was 287.3MB in the beginning and 284.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.04ms. Allocated memory is still 339.7MB. Free memory was 284.6MB in the beginning and 283.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 277.06ms. Allocated memory is still 339.7MB. Free memory was 283.1MB in the beginning and 269.4MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3544.70ms. Allocated memory was 339.7MB in the beginning and 408.9MB in the end (delta: 69.2MB). Free memory was 269.0MB in the beginning and 205.0MB in the end (delta: 64.1MB). Peak memory consumption was 133.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 246]: Unsoundness Warning unspecified type, defaulting to int C: short [246] - GenericResultAtLocation [Line: 246]: Unsoundness Warning unspecified type, defaulting to int C: short [246] - GenericResultAtLocation [Line: 738]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [738] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 69 PlacesBefore, 19 PlacesAfterwards, 65 TransitionsBefore, 15 TransitionsAfterwards, 480 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 1143 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 668, independent: 553, independent conditional: 0, independent unconditional: 553, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 280, independent: 261, independent conditional: 0, independent unconditional: 261, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 668, independent: 292, independent conditional: 0, independent unconditional: 292, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 280, unknown conditional: 0, unknown unconditional: 280] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 100 locations, 7 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: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 347 IncrementalHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 5 mSDtfsCounter, 347 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=2, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 11:05:28,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...