/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_42-trylock_2mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:12:13,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:12:13,909 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:12:13,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:12:13,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:12:13,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:12:13,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:12:13,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:12:13,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:12:13,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:12:13,954 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:12:13,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:12:13,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:12:13,954 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:12:13,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:12:13,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:12:13,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:12:13,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:12:13,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:12:13,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:12:13,964 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:12:13,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:12:13,965 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:12:13,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:12:13,965 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:12:13,966 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:12:13,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:12:13,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:12:13,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:12:13,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:12:13,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:12:13,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:12:13,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:12:13,967 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:12:13,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:12:13,967 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:12:14,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:12:14,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:12:14,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:12:14,231 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:12:14,232 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:12:14,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_42-trylock_2mutex.i [2023-08-26 22:12:15,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:12:15,509 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:12:15,509 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_42-trylock_2mutex.i [2023-08-26 22:12:15,522 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea8a56515/9fa3ef36b29d414abc9caa1a866b7f49/FLAG35f96008d [2023-08-26 22:12:15,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea8a56515/9fa3ef36b29d414abc9caa1a866b7f49 [2023-08-26 22:12:15,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:12:15,535 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:12:15,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:12:15,536 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:12:15,537 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:12:15,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dfc09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15, skipping insertion in model container [2023-08-26 22:12:15,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,564 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:12:15,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:12:15,798 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:12:15,820 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:12:15,821 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:12:15,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:12:15,868 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:12:15,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15 WrapperNode [2023-08-26 22:12:15,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:12:15,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:12:15,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:12:15,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:12:15,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,906 INFO L138 Inliner]: procedures = 163, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-08-26 22:12:15,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:12:15,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:12:15,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:12:15,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:12:15,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,929 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:12:15,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:12:15,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:12:15,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:12:15,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (1/1) ... [2023-08-26 22:12:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:12:15,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:12:15,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 22:12:15,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 22:12:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:12:15,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:12:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:12:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:12:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:12:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:12:15,989 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:12:15,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:12:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-26 22:12:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:12:15,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:12:15,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:12:15,991 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:12:16,099 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:12:16,100 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:12:16,261 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:12:16,266 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:12:16,266 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-26 22:12:16,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:12:16 BoogieIcfgContainer [2023-08-26 22:12:16,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:12:16,269 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:12:16,269 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:12:16,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:12:16,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:12:15" (1/3) ... [2023-08-26 22:12:16,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38387f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:12:16, skipping insertion in model container [2023-08-26 22:12:16,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:12:15" (2/3) ... [2023-08-26 22:12:16,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38387f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:12:16, skipping insertion in model container [2023-08-26 22:12:16,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:12:16" (3/3) ... [2023-08-26 22:12:16,272 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_42-trylock_2mutex.i [2023-08-26 22:12:16,286 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:12:16,286 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-26 22:12:16,286 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:12:16,349 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:12:16,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 164 flow [2023-08-26 22:12:16,432 INFO L124 PetriNetUnfolderBase]: 2/77 cut-off events. [2023-08-26 22:12:16,432 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:12:16,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 77 events. 2/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2023-08-26 22:12:16,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 164 flow [2023-08-26 22:12:16,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 70 transitions, 143 flow [2023-08-26 22:12:16,462 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:12:16,473 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 70 transitions, 143 flow [2023-08-26 22:12:16,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 70 transitions, 143 flow [2023-08-26 22:12:16,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 143 flow [2023-08-26 22:12:16,498 INFO L124 PetriNetUnfolderBase]: 2/70 cut-off events. [2023-08-26 22:12:16,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:12:16,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2023-08-26 22:12:16,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 966 [2023-08-26 22:12:18,113 INFO L134 LiptonReduction]: Checked pairs total: 3010 [2023-08-26 22:12:18,113 INFO L136 LiptonReduction]: Total number of compositions: 54 [2023-08-26 22:12:18,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:12:18,127 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;@676d0471, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:12:18,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-26 22:12:18,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:12:18,129 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 22:12:18,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:12:18,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:18,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:12:18,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-26 22:12:18,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash 8380606, now seen corresponding path program 1 times [2023-08-26 22:12:18,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:18,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132619866] [2023-08-26 22:12:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:18,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:18,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:18,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132619866] [2023-08-26 22:12:18,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132619866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:18,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:18,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:12:18,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177775466] [2023-08-26 22:12:18,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:18,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:12:18,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:18,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:12:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:12:18,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 132 [2023-08-26 22:12:18,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 53 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) [2023-08-26 22:12:18,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:18,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 132 [2023-08-26 22:12:18,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:18,417 INFO L124 PetriNetUnfolderBase]: 59/152 cut-off events. [2023-08-26 22:12:18,417 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:12:18,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 152 events. 59/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 598 event pairs, 20 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 275. Up to 101 conditions per place. [2023-08-26 22:12:18,421 INFO L140 encePairwiseOnDemand]: 127/132 looper letters, 25 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-08-26 22:12:18,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 127 flow [2023-08-26 22:12:18,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:12:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:12:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-26 22:12:18,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2023-08-26 22:12:18,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-26 22:12:18,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-26 22:12:18,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:18,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-26 22:12:18,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,443 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 53 flow. Second operand 3 states and 243 transitions. [2023-08-26 22:12:18,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 127 flow [2023-08-26 22:12:18,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:12:18,445 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 73 flow [2023-08-26 22:12:18,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-08-26 22:12:18,448 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-26 22:12:18,448 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 73 flow [2023-08-26 22:12:18,450 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) [2023-08-26 22:12:18,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:18,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:12:18,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:12:18,450 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-26 22:12:18,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash 259825268, now seen corresponding path program 1 times [2023-08-26 22:12:18,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:18,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267498258] [2023-08-26 22:12:18,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:18,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:18,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267498258] [2023-08-26 22:12:18,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267498258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:18,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:18,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:12:18,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641022709] [2023-08-26 22:12:18,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:18,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:12:18,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:18,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:12:18,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:12:18,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 132 [2023-08-26 22:12:18,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:18,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 132 [2023-08-26 22:12:18,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:18,579 INFO L124 PetriNetUnfolderBase]: 59/140 cut-off events. [2023-08-26 22:12:18,586 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-26 22:12:18,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 140 events. 59/140 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 481 event pairs, 34 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 297. Up to 89 conditions per place. [2023-08-26 22:12:18,587 INFO L140 encePairwiseOnDemand]: 126/132 looper letters, 25 selfloop transitions, 2 changer transitions 5/34 dead transitions. [2023-08-26 22:12:18,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 153 flow [2023-08-26 22:12:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:12:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:12:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-08-26 22:12:18,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5934343434343434 [2023-08-26 22:12:18,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-08-26 22:12:18,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-08-26 22:12:18,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:18,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-08-26 22:12:18,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,595 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,595 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 73 flow. Second operand 3 states and 235 transitions. [2023-08-26 22:12:18,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 153 flow [2023-08-26 22:12:18,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:12:18,596 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 68 flow [2023-08-26 22:12:18,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-26 22:12:18,597 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-26 22:12:18,597 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 68 flow [2023-08-26 22:12:18,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:18,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:12:18,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:12:18,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-26 22:12:18,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 297195388, now seen corresponding path program 1 times [2023-08-26 22:12:18,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:18,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394637518] [2023-08-26 22:12:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:18,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:18,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394637518] [2023-08-26 22:12:18,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394637518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:18,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:18,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:12:18,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507986896] [2023-08-26 22:12:18,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:18,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:12:18,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:18,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:12:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:12:18,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2023-08-26 22:12:18,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:18,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2023-08-26 22:12:18,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:18,755 INFO L124 PetriNetUnfolderBase]: 21/85 cut-off events. [2023-08-26 22:12:18,755 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 22:12:18,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 85 events. 21/85 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 321 event pairs, 4 based on Foata normal form. 9/85 useless extension candidates. Maximal degree in co-relation 174. Up to 40 conditions per place. [2023-08-26 22:12:18,756 INFO L140 encePairwiseOnDemand]: 124/132 looper letters, 19 selfloop transitions, 8 changer transitions 1/33 dead transitions. [2023-08-26 22:12:18,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 151 flow [2023-08-26 22:12:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:12:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:12:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-26 22:12:18,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2023-08-26 22:12:18,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-26 22:12:18,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-26 22:12:18,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:18,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-26 22:12:18,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,761 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 68 flow. Second operand 3 states and 208 transitions. [2023-08-26 22:12:18,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 151 flow [2023-08-26 22:12:18,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:12:18,762 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 100 flow [2023-08-26 22:12:18,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-26 22:12:18,762 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-26 22:12:18,762 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 100 flow [2023-08-26 22:12:18,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:18,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:12:18,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:12:18,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-26 22:12:18,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:18,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1423384579, now seen corresponding path program 1 times [2023-08-26 22:12:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:18,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193085253] [2023-08-26 22:12:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:18,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:18,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:18,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:18,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193085253] [2023-08-26 22:12:18,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193085253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:18,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:18,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:12:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955054461] [2023-08-26 22:12:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:18,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:12:18,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:18,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:12:18,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:12:18,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2023-08-26 22:12:18,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:18,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2023-08-26 22:12:18,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:18,853 INFO L124 PetriNetUnfolderBase]: 28/93 cut-off events. [2023-08-26 22:12:18,853 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-26 22:12:18,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 93 events. 28/93 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 308 event pairs, 11 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 252. Up to 42 conditions per place. [2023-08-26 22:12:18,854 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 27 selfloop transitions, 3 changer transitions 2/34 dead transitions. [2023-08-26 22:12:18,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 190 flow [2023-08-26 22:12:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:12:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:12:18,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2023-08-26 22:12:18,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-08-26 22:12:18,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 286 transitions. [2023-08-26 22:12:18,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 286 transitions. [2023-08-26 22:12:18,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:18,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 286 transitions. [2023-08-26 22:12:18,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,858 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 100 flow. Second operand 4 states and 286 transitions. [2023-08-26 22:12:18,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 190 flow [2023-08-26 22:12:18,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:12:18,859 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 94 flow [2023-08-26 22:12:18,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-26 22:12:18,860 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-26 22:12:18,860 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 94 flow [2023-08-26 22:12:18,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:18,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:12:18,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:12:18,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-26 22:12:18,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1423384559, now seen corresponding path program 1 times [2023-08-26 22:12:18,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:18,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065329162] [2023-08-26 22:12:18,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:18,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065329162] [2023-08-26 22:12:18,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065329162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:18,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:18,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:12:18,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616869286] [2023-08-26 22:12:18,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:18,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:12:18,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:18,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:12:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:12:18,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 132 [2023-08-26 22:12:18,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:18,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 132 [2023-08-26 22:12:18,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:18,933 INFO L124 PetriNetUnfolderBase]: 27/89 cut-off events. [2023-08-26 22:12:18,935 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 22:12:18,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 89 events. 27/89 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 291 event pairs, 8 based on Foata normal form. 3/86 useless extension candidates. Maximal degree in co-relation 230. Up to 42 conditions per place. [2023-08-26 22:12:18,937 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 25 selfloop transitions, 3 changer transitions 9/38 dead transitions. [2023-08-26 22:12:18,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 202 flow [2023-08-26 22:12:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:12:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:12:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2023-08-26 22:12:18,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2023-08-26 22:12:18,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 290 transitions. [2023-08-26 22:12:18,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 290 transitions. [2023-08-26 22:12:18,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:18,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 290 transitions. [2023-08-26 22:12:18,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,944 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,944 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 94 flow. Second operand 4 states and 290 transitions. [2023-08-26 22:12:18,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 202 flow [2023-08-26 22:12:18,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 194 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:12:18,945 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 70 flow [2023-08-26 22:12:18,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-26 22:12:18,947 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-26 22:12:18,947 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 70 flow [2023-08-26 22:12:18,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:18,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:18,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:12:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:12:18,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-26 22:12:18,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 315789950, now seen corresponding path program 1 times [2023-08-26 22:12:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:18,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985447136] [2023-08-26 22:12:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:18,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:19,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:19,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985447136] [2023-08-26 22:12:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985447136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:19,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:19,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:12:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668210757] [2023-08-26 22:12:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:12:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:12:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:12:19,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2023-08-26 22:12:19,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:19,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2023-08-26 22:12:19,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:19,088 INFO L124 PetriNetUnfolderBase]: 22/66 cut-off events. [2023-08-26 22:12:19,088 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-26 22:12:19,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 66 events. 22/66 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 156 event pairs, 2 based on Foata normal form. 3/63 useless extension candidates. Maximal degree in co-relation 170. Up to 32 conditions per place. [2023-08-26 22:12:19,089 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 26 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2023-08-26 22:12:19,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 160 flow [2023-08-26 22:12:19,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:12:19,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:12:19,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2023-08-26 22:12:19,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121212121212121 [2023-08-26 22:12:19,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 338 transitions. [2023-08-26 22:12:19,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 338 transitions. [2023-08-26 22:12:19,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:19,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 338 transitions. [2023-08-26 22:12:19,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,093 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,093 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 70 flow. Second operand 5 states and 338 transitions. [2023-08-26 22:12:19,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 160 flow [2023-08-26 22:12:19,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 30 transitions, 152 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 22:12:19,094 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 64 flow [2023-08-26 22:12:19,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-08-26 22:12:19,094 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2023-08-26 22:12:19,094 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 64 flow [2023-08-26 22:12:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:19,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:12:19,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:12:19,095 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-26 22:12:19,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash 973057176, now seen corresponding path program 1 times [2023-08-26 22:12:19,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:19,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260133801] [2023-08-26 22:12:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:19,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:19,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:19,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:19,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260133801] [2023-08-26 22:12:19,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260133801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:19,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:19,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:12:19,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85968182] [2023-08-26 22:12:19,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:19,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:12:19,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:19,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:12:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:12:19,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 132 [2023-08-26 22:12:19,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 64 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) [2023-08-26 22:12:19,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:19,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 132 [2023-08-26 22:12:19,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:19,163 INFO L124 PetriNetUnfolderBase]: 22/73 cut-off events. [2023-08-26 22:12:19,163 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 22:12:19,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 73 events. 22/73 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 189 event pairs, 4 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 188. Up to 44 conditions per place. [2023-08-26 22:12:19,165 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 18 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2023-08-26 22:12:19,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 137 flow [2023-08-26 22:12:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:12:19,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:12:19,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-08-26 22:12:19,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2023-08-26 22:12:19,166 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-08-26 22:12:19,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-08-26 22:12:19,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:19,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-08-26 22:12:19,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,167 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 64 flow. Second operand 3 states and 199 transitions. [2023-08-26 22:12:19,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 137 flow [2023-08-26 22:12:19,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 131 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:12:19,169 INFO L231 Difference]: Finished difference. Result has 25 places, 21 transitions, 92 flow [2023-08-26 22:12:19,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=25, PETRI_TRANSITIONS=21} [2023-08-26 22:12:19,170 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2023-08-26 22:12:19,170 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 21 transitions, 92 flow [2023-08-26 22:12:19,171 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) [2023-08-26 22:12:19,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:12:19,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:12:19,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:12:19,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-26 22:12:19,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:12:19,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2139255142, now seen corresponding path program 1 times [2023-08-26 22:12:19,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:12:19,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93101152] [2023-08-26 22:12:19,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:12:19,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:12:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:12:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:12:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:12:19,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93101152] [2023-08-26 22:12:19,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93101152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:12:19,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:12:19,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:12:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030822052] [2023-08-26 22:12:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:12:19,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:12:19,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:12:19,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:12:19,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:12:19,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 132 [2023-08-26 22:12:19,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 21 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:12:19,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 132 [2023-08-26 22:12:19,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:12:19,263 INFO L124 PetriNetUnfolderBase]: 24/73 cut-off events. [2023-08-26 22:12:19,263 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 22:12:19,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 73 events. 24/73 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 2 based on Foata normal form. 4/77 useless extension candidates. Maximal degree in co-relation 225. Up to 38 conditions per place. [2023-08-26 22:12:19,263 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-26 22:12:19,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 205 flow [2023-08-26 22:12:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 22:12:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 22:12:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 337 transitions. [2023-08-26 22:12:19,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106060606060606 [2023-08-26 22:12:19,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 337 transitions. [2023-08-26 22:12:19,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 337 transitions. [2023-08-26 22:12:19,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:12:19,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 337 transitions. [2023-08-26 22:12:19,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 132.0) internal successors, (792), 6 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,267 INFO L175 Difference]: Start difference. First operand has 25 places, 21 transitions, 92 flow. Second operand 5 states and 337 transitions. [2023-08-26 22:12:19,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 205 flow [2023-08-26 22:12:19,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:12:19,268 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-26 22:12:19,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-26 22:12:19,268 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-08-26 22:12:19,268 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-26 22:12:19,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.4) internal successors, (322), 5 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:12:19,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 11 remaining) [2023-08-26 22:12:19,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2023-08-26 22:12:19,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 11 remaining) [2023-08-26 22:12:19,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2023-08-26 22:12:19,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2023-08-26 22:12:19,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2023-08-26 22:12:19,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2023-08-26 22:12:19,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2023-08-26 22:12:19,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2023-08-26 22:12:19,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2023-08-26 22:12:19,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2023-08-26 22:12:19,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:12:19,271 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:12:19,274 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:12:19,274 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:12:19,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:12:19 BasicIcfg [2023-08-26 22:12:19,276 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:12:19,277 INFO L158 Benchmark]: Toolchain (without parser) took 3741.61ms. Allocated memory was 308.3MB in the beginning and 394.3MB in the end (delta: 86.0MB). Free memory was 283.2MB in the beginning and 244.9MB in the end (delta: 38.3MB). Peak memory consumption was 124.8MB. Max. memory is 16.0GB. [2023-08-26 22:12:19,277 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 308.3MB. Free memory is still 285.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:12:19,277 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.66ms. Allocated memory is still 308.3MB. Free memory was 283.2MB in the beginning and 264.2MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 22:12:19,277 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.42ms. Allocated memory is still 308.3MB. Free memory was 264.2MB in the beginning and 262.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:12:19,277 INFO L158 Benchmark]: Boogie Preprocessor took 26.89ms. Allocated memory is still 308.3MB. Free memory was 262.2MB in the beginning and 261.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:12:19,278 INFO L158 Benchmark]: RCFGBuilder took 333.28ms. Allocated memory is still 308.3MB. Free memory was 260.6MB in the beginning and 247.0MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 22:12:19,278 INFO L158 Benchmark]: TraceAbstraction took 3007.66ms. Allocated memory was 308.3MB in the beginning and 394.3MB in the end (delta: 86.0MB). Free memory was 246.5MB in the beginning and 244.9MB in the end (delta: 1.7MB). Peak memory consumption was 89.1MB. Max. memory is 16.0GB. [2023-08-26 22:12:19,279 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 308.3MB. Free memory is still 285.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 334.66ms. Allocated memory is still 308.3MB. Free memory was 283.2MB in the beginning and 264.2MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.42ms. Allocated memory is still 308.3MB. Free memory was 264.2MB in the beginning and 262.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.89ms. Allocated memory is still 308.3MB. Free memory was 262.2MB in the beginning and 261.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 333.28ms. Allocated memory is still 308.3MB. Free memory was 260.6MB in the beginning and 247.0MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3007.66ms. Allocated memory was 308.3MB in the beginning and 394.3MB in the end (delta: 86.0MB). Free memory was 246.5MB in the beginning and 244.9MB in the end (delta: 1.7MB). Peak memory consumption was 89.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 72 PlacesBefore, 28 PlacesAfterwards, 70 TransitionsBefore, 25 TransitionsAfterwards, 966 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 54 TotalNumberOfCompositions, 3010 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1150, independent: 962, independent conditional: 0, independent unconditional: 962, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 508, independent: 464, independent conditional: 0, independent unconditional: 464, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1150, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 144, dependent conditional: 0, dependent unconditional: 144, unknown: 508, unknown conditional: 0, unknown unconditional: 508] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 684]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 684]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 687]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 687]: 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, 102 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 335 IncrementalHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 8 mSDtfsCounter, 335 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 178 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 22:12:19,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...