/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/36-apron_22-traces-write-centered-vs-meet-mutex_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:01:27,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:01:27,928 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 23:01:27,935 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:01:27,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:01:27,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:01:27,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:01:27,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:01:27,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:01:27,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:01:27,981 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:01:27,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:01:27,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:01:27,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:01:27,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:01:27,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:01:27,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:01:27,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:01:27,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:01:27,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:01:27,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:01:27,988 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:01:27,988 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:01:27,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:01:27,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:01:27,991 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:01:27,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:01:27,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:01:27,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:01:27,992 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:01:27,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:01:27,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:01:27,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:01:27,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:01:27,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:01:27,994 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:01:28,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:01:28,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:01:28,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:01:28,321 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:01:28,322 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:01:28,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-08-26 23:01:29,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:01:29,658 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:01:29,659 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-08-26 23:01:29,673 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545dee7d1/f31a9502107142ce813b2ec586155e66/FLAG245272209 [2023-08-26 23:01:29,684 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/545dee7d1/f31a9502107142ce813b2ec586155e66 [2023-08-26 23:01:29,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:01:29,687 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:01:29,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:01:29,689 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:01:29,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:01:29,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:01:29" (1/1) ... [2023-08-26 23:01:29,692 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa64e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:29, skipping insertion in model container [2023-08-26 23:01:29,692 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:01:29" (1/1) ... [2023-08-26 23:01:29,733 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:01:29,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:01:29,985 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:01:30,019 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 23:01:30,021 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-26 23:01:30,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:01:30,086 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:01:30,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30 WrapperNode [2023-08-26 23:01:30,086 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:01:30,087 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:01:30,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:01:30,088 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:01:30,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,154 INFO L138 Inliner]: procedures = 163, calls = 39, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 127 [2023-08-26 23:01:30,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:01:30,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:01:30,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:01:30,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:01:30,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,175 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:01:30,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:01:30,191 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:01:30,191 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:01:30,192 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (1/1) ... [2023-08-26 23:01:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:01:30,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:01:30,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 23:01:30,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 23:01:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:01:30,274 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 23:01:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:01:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:01:30,275 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 23:01:30,276 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 23:01:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:01:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:01:30,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:01:30,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:01:30,278 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 23:01:30,433 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:01:30,434 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:01:30,695 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:01:30,702 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:01:30,703 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 23:01:30,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:01:30 BoogieIcfgContainer [2023-08-26 23:01:30,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:01:30,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:01:30,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:01:30,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:01:30,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:01:29" (1/3) ... [2023-08-26 23:01:30,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a4916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:01:30, skipping insertion in model container [2023-08-26 23:01:30,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:01:30" (2/3) ... [2023-08-26 23:01:30,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a4916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:01:30, skipping insertion in model container [2023-08-26 23:01:30,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:01:30" (3/3) ... [2023-08-26 23:01:30,712 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true.i [2023-08-26 23:01:30,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:01:30,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 23:01:30,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:01:30,828 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 23:01:30,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 145 transitions, 295 flow [2023-08-26 23:01:30,917 INFO L124 PetriNetUnfolderBase]: 7/147 cut-off events. [2023-08-26 23:01:30,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:01:30,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 147 events. 7/147 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-08-26 23:01:30,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 145 transitions, 295 flow [2023-08-26 23:01:30,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 143 transitions, 289 flow [2023-08-26 23:01:30,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:01:30,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 143 transitions, 289 flow [2023-08-26 23:01:30,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 143 transitions, 289 flow [2023-08-26 23:01:30,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 143 transitions, 289 flow [2023-08-26 23:01:30,972 INFO L124 PetriNetUnfolderBase]: 7/143 cut-off events. [2023-08-26 23:01:30,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:01:30,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 143 events. 7/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-08-26 23:01:30,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 4118 [2023-08-26 23:01:35,317 INFO L134 LiptonReduction]: Checked pairs total: 12645 [2023-08-26 23:01:35,317 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-26 23:01:35,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:01:35,336 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;@ef83ef4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:01:35,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-26 23:01:35,341 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:01:35,341 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-26 23:01:35,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:01:35,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:35,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 23:01:35,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:35,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:35,347 INFO L85 PathProgramCache]: Analyzing trace with hash -392401677, now seen corresponding path program 1 times [2023-08-26 23:01:35,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:35,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726078711] [2023-08-26 23:01:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:35,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:35,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726078711] [2023-08-26 23:01:35,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726078711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:35,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:35,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:01:35,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052316355] [2023-08-26 23:01:35,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:35,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 23:01:35,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 23:01:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 23:01:35,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 290 [2023-08-26 23:01:35,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:35,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:35,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 290 [2023-08-26 23:01:35,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:36,007 INFO L124 PetriNetUnfolderBase]: 171/460 cut-off events. [2023-08-26 23:01:36,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:01:36,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 460 events. 171/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2364 event pairs, 22 based on Foata normal form. 22/363 useless extension candidates. Maximal degree in co-relation 850. Up to 258 conditions per place. [2023-08-26 23:01:36,014 INFO L140 encePairwiseOnDemand]: 277/290 looper letters, 51 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2023-08-26 23:01:36,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 65 transitions, 253 flow [2023-08-26 23:01:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:01:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:01:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 659 transitions. [2023-08-26 23:01:36,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45448275862068965 [2023-08-26 23:01:36,037 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 659 transitions. [2023-08-26 23:01:36,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 659 transitions. [2023-08-26 23:01:36,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:36,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 659 transitions. [2023-08-26 23:01:36,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,059 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,061 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 81 flow. Second operand 5 states and 659 transitions. [2023-08-26 23:01:36,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 65 transitions, 253 flow [2023-08-26 23:01:36,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:01:36,067 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 133 flow [2023-08-26 23:01:36,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-26 23:01:36,076 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-26 23:01:36,076 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 133 flow [2023-08-26 23:01:36,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:36,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 23:01:36,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:01:36,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:36,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash -393790829, now seen corresponding path program 1 times [2023-08-26 23:01:36,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:36,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565687155] [2023-08-26 23:01:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:36,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:36,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:36,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:36,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565687155] [2023-08-26 23:01:36,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565687155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:36,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:36,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:01:36,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509812771] [2023-08-26 23:01:36,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:36,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:01:36,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:36,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:01:36,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:01:36,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 290 [2023-08-26 23:01:36,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:36,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 290 [2023-08-26 23:01:36,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:36,243 INFO L124 PetriNetUnfolderBase]: 164/417 cut-off events. [2023-08-26 23:01:36,244 INFO L125 PetriNetUnfolderBase]: For 106/108 co-relation queries the response was YES. [2023-08-26 23:01:36,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 417 events. 164/417 cut-off events. For 106/108 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2072 event pairs, 128 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 947. Up to 353 conditions per place. [2023-08-26 23:01:36,249 INFO L140 encePairwiseOnDemand]: 288/290 looper letters, 30 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-26 23:01:36,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 184 flow [2023-08-26 23:01:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:01:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:01:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-26 23:01:36,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46091954022988507 [2023-08-26 23:01:36,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-26 23:01:36,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-26 23:01:36,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:36,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-26 23:01:36,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,258 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,258 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 133 flow. Second operand 3 states and 401 transitions. [2023-08-26 23:01:36,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 184 flow [2023-08-26 23:01:36,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:01:36,261 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 120 flow [2023-08-26 23:01:36,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-26 23:01:36,262 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-26 23:01:36,262 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 120 flow [2023-08-26 23:01:36,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:36,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 23:01:36,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 23:01:36,263 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:36,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash -393790896, now seen corresponding path program 1 times [2023-08-26 23:01:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:36,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345144217] [2023-08-26 23:01:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:36,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:36,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345144217] [2023-08-26 23:01:36,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345144217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:36,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:36,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:01:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825081185] [2023-08-26 23:01:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:36,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:01:36,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:01:36,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:01:36,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 290 [2023-08-26 23:01:36,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:36,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 290 [2023-08-26 23:01:36,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:36,370 INFO L124 PetriNetUnfolderBase]: 150/374 cut-off events. [2023-08-26 23:01:36,372 INFO L125 PetriNetUnfolderBase]: For 102/104 co-relation queries the response was YES. [2023-08-26 23:01:36,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 374 events. 150/374 cut-off events. For 102/104 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1734 event pairs, 115 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 812. Up to 311 conditions per place. [2023-08-26 23:01:36,374 INFO L140 encePairwiseOnDemand]: 288/290 looper letters, 22 selfloop transitions, 1 changer transitions 6/36 dead transitions. [2023-08-26 23:01:36,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 168 flow [2023-08-26 23:01:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:01:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:01:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-26 23:01:36,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2023-08-26 23:01:36,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-26 23:01:36,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-26 23:01:36,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:36,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-26 23:01:36,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,381 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 120 flow. Second operand 3 states and 400 transitions. [2023-08-26 23:01:36,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 168 flow [2023-08-26 23:01:36,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 36 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:01:36,383 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 95 flow [2023-08-26 23:01:36,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2023-08-26 23:01:36,385 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-26 23:01:36,385 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 95 flow [2023-08-26 23:01:36,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:36,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:36,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 23:01:36,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:36,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash 859048190, now seen corresponding path program 1 times [2023-08-26 23:01:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:36,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47225388] [2023-08-26 23:01:36,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:36,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47225388] [2023-08-26 23:01:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47225388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:36,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:36,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:01:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19618392] [2023-08-26 23:01:36,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:36,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:01:36,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:36,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:01:36,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:01:36,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 290 [2023-08-26 23:01:36,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:36,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 290 [2023-08-26 23:01:36,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:36,711 INFO L124 PetriNetUnfolderBase]: 104/286 cut-off events. [2023-08-26 23:01:36,711 INFO L125 PetriNetUnfolderBase]: For 71/73 co-relation queries the response was YES. [2023-08-26 23:01:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 286 events. 104/286 cut-off events. For 71/73 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1275 event pairs, 40 based on Foata normal form. 7/275 useless extension candidates. Maximal degree in co-relation 609. Up to 142 conditions per place. [2023-08-26 23:01:36,713 INFO L140 encePairwiseOnDemand]: 282/290 looper letters, 42 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2023-08-26 23:01:36,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 255 flow [2023-08-26 23:01:36,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 23:01:36,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 23:01:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 984 transitions. [2023-08-26 23:01:36,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241379310344828 [2023-08-26 23:01:36,717 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 984 transitions. [2023-08-26 23:01:36,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 984 transitions. [2023-08-26 23:01:36,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:36,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 984 transitions. [2023-08-26 23:01:36,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,725 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,725 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 95 flow. Second operand 8 states and 984 transitions. [2023-08-26 23:01:36,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 255 flow [2023-08-26 23:01:36,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:01:36,728 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 144 flow [2023-08-26 23:01:36,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-08-26 23:01:36,730 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2023-08-26 23:01:36,730 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 144 flow [2023-08-26 23:01:36,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:36,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:36,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 23:01:36,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:36,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:36,733 INFO L85 PathProgramCache]: Analyzing trace with hash 633513654, now seen corresponding path program 1 times [2023-08-26 23:01:36,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:36,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458986263] [2023-08-26 23:01:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:36,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:36,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:36,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458986263] [2023-08-26 23:01:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458986263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:36,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:01:36,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328276795] [2023-08-26 23:01:36,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:36,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:01:36,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:36,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:01:36,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:01:36,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 290 [2023-08-26 23:01:36,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:36,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 290 [2023-08-26 23:01:36,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:36,860 INFO L124 PetriNetUnfolderBase]: 87/256 cut-off events. [2023-08-26 23:01:36,860 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-08-26 23:01:36,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 626 conditions, 256 events. 87/256 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1093 event pairs, 39 based on Foata normal form. 12/260 useless extension candidates. Maximal degree in co-relation 611. Up to 142 conditions per place. [2023-08-26 23:01:36,862 INFO L140 encePairwiseOnDemand]: 280/290 looper letters, 30 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2023-08-26 23:01:36,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 257 flow [2023-08-26 23:01:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:01:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:01:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-26 23:01:36,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425287356321839 [2023-08-26 23:01:36,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-26 23:01:36,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-26 23:01:36,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:36,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-26 23:01:36,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,869 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 144 flow. Second operand 3 states and 385 transitions. [2023-08-26 23:01:36,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 257 flow [2023-08-26 23:01:36,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 219 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-26 23:01:36,872 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 155 flow [2023-08-26 23:01:36,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-26 23:01:36,873 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-26 23:01:36,873 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 155 flow [2023-08-26 23:01:36,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:36,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:36,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 23:01:36,874 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:36,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash 911627549, now seen corresponding path program 1 times [2023-08-26 23:01:36,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:36,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092778318] [2023-08-26 23:01:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:36,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:36,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:36,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092778318] [2023-08-26 23:01:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092778318] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:36,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:36,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 23:01:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459511764] [2023-08-26 23:01:36,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:36,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:01:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:36,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:01:36,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:01:36,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 290 [2023-08-26 23:01:36,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:36,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:36,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 290 [2023-08-26 23:01:36,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:37,014 INFO L124 PetriNetUnfolderBase]: 92/259 cut-off events. [2023-08-26 23:01:37,014 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-08-26 23:01:37,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 259 events. 92/259 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1096 event pairs, 62 based on Foata normal form. 15/262 useless extension candidates. Maximal degree in co-relation 715. Up to 209 conditions per place. [2023-08-26 23:01:37,016 INFO L140 encePairwiseOnDemand]: 286/290 looper letters, 36 selfloop transitions, 3 changer transitions 1/45 dead transitions. [2023-08-26 23:01:37,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 269 flow [2023-08-26 23:01:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:01:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:01:37,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-26 23:01:37,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-08-26 23:01:37,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-26 23:01:37,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-26 23:01:37,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:37,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-26 23:01:37,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,021 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 155 flow. Second operand 3 states and 390 transitions. [2023-08-26 23:01:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 269 flow [2023-08-26 23:01:37,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:01:37,024 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 164 flow [2023-08-26 23:01:37,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-08-26 23:01:37,025 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2023-08-26 23:01:37,025 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 164 flow [2023-08-26 23:01:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:37,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:37,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 23:01:37,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:37,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2022729102, now seen corresponding path program 1 times [2023-08-26 23:01:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337793691] [2023-08-26 23:01:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:37,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337793691] [2023-08-26 23:01:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337793691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:37,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:37,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:01:37,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507684898] [2023-08-26 23:01:37,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:37,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:01:37,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:37,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:01:37,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:01:37,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 290 [2023-08-26 23:01:37,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:37,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 290 [2023-08-26 23:01:37,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:37,200 INFO L124 PetriNetUnfolderBase]: 77/241 cut-off events. [2023-08-26 23:01:37,200 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-08-26 23:01:37,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 241 events. 77/241 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1064 event pairs, 40 based on Foata normal form. 1/231 useless extension candidates. Maximal degree in co-relation 660. Up to 139 conditions per place. [2023-08-26 23:01:37,202 INFO L140 encePairwiseOnDemand]: 285/290 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-08-26 23:01:37,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 341 flow [2023-08-26 23:01:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 23:01:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 23:01:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 590 transitions. [2023-08-26 23:01:37,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2023-08-26 23:01:37,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 590 transitions. [2023-08-26 23:01:37,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 590 transitions. [2023-08-26 23:01:37,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:37,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 590 transitions. [2023-08-26 23:01:37,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,209 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 290.0) internal successors, (1740), 6 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,209 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 164 flow. Second operand 5 states and 590 transitions. [2023-08-26 23:01:37,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 341 flow [2023-08-26 23:01:37,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:01:37,212 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 191 flow [2023-08-26 23:01:37,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-26 23:01:37,213 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2023-08-26 23:01:37,213 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 191 flow [2023-08-26 23:01:37,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:37,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:37,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 23:01:37,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr4ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:37,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:37,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1413805902, now seen corresponding path program 1 times [2023-08-26 23:01:37,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:37,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582823121] [2023-08-26 23:01:37,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:37,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:37,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582823121] [2023-08-26 23:01:37,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582823121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:37,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:37,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 23:01:37,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820628003] [2023-08-26 23:01:37,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:37,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:01:37,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:37,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:01:37,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:01:37,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 290 [2023-08-26 23:01:37,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:37,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 290 [2023-08-26 23:01:37,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:37,384 INFO L124 PetriNetUnfolderBase]: 87/253 cut-off events. [2023-08-26 23:01:37,384 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-08-26 23:01:37,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 253 events. 87/253 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1080 event pairs, 48 based on Foata normal form. 5/247 useless extension candidates. Maximal degree in co-relation 746. Up to 161 conditions per place. [2023-08-26 23:01:37,386 INFO L140 encePairwiseOnDemand]: 283/290 looper letters, 44 selfloop transitions, 8 changer transitions 2/60 dead transitions. [2023-08-26 23:01:37,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 369 flow [2023-08-26 23:01:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 23:01:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 23:01:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 868 transitions. [2023-08-26 23:01:37,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2023-08-26 23:01:37,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 868 transitions. [2023-08-26 23:01:37,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 868 transitions. [2023-08-26 23:01:37,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:37,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 868 transitions. [2023-08-26 23:01:37,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 290.0) internal successors, (2320), 8 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,396 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 290.0) internal successors, (2320), 8 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,396 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 191 flow. Second operand 7 states and 868 transitions. [2023-08-26 23:01:37,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 369 flow [2023-08-26 23:01:37,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 359 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 23:01:37,399 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 238 flow [2023-08-26 23:01:37,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-26 23:01:37,399 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2023-08-26 23:01:37,400 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 238 flow [2023-08-26 23:01:37,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.6) internal successors, (598), 5 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:37,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:37,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 23:01:37,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:37,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1777455831, now seen corresponding path program 1 times [2023-08-26 23:01:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:37,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299773486] [2023-08-26 23:01:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:37,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:37,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299773486] [2023-08-26 23:01:37,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299773486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:37,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:37,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:01:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448933146] [2023-08-26 23:01:37,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:37,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:01:37,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:01:37,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:01:37,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 290 [2023-08-26 23:01:37,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:37,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 290 [2023-08-26 23:01:37,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:37,653 INFO L124 PetriNetUnfolderBase]: 63/204 cut-off events. [2023-08-26 23:01:37,653 INFO L125 PetriNetUnfolderBase]: For 241/241 co-relation queries the response was YES. [2023-08-26 23:01:37,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 204 events. 63/204 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 825 event pairs, 23 based on Foata normal form. 4/199 useless extension candidates. Maximal degree in co-relation 649. Up to 101 conditions per place. [2023-08-26 23:01:37,655 INFO L140 encePairwiseOnDemand]: 282/290 looper letters, 31 selfloop transitions, 13 changer transitions 3/57 dead transitions. [2023-08-26 23:01:37,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 393 flow [2023-08-26 23:01:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 23:01:37,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 23:01:37,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 472 transitions. [2023-08-26 23:01:37,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2023-08-26 23:01:37,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 472 transitions. [2023-08-26 23:01:37,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 472 transitions. [2023-08-26 23:01:37,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:37,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 472 transitions. [2023-08-26 23:01:37,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,661 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 238 flow. Second operand 4 states and 472 transitions. [2023-08-26 23:01:37,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 393 flow [2023-08-26 23:01:37,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 383 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-26 23:01:37,664 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 285 flow [2023-08-26 23:01:37,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-26 23:01:37,665 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-08-26 23:01:37,665 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 285 flow [2023-08-26 23:01:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:37,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:37,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 23:01:37,666 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:37,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash -718852948, now seen corresponding path program 1 times [2023-08-26 23:01:37,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:37,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534254409] [2023-08-26 23:01:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:01:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 23:01:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:01:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534254409] [2023-08-26 23:01:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534254409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:01:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:01:37,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:01:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188523559] [2023-08-26 23:01:37,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:01:37,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:01:37,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:01:37,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:01:37,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:01:37,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 290 [2023-08-26 23:01:37,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:01:37,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 290 [2023-08-26 23:01:37,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:01:37,843 INFO L124 PetriNetUnfolderBase]: 57/185 cut-off events. [2023-08-26 23:01:37,843 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-08-26 23:01:37,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 185 events. 57/185 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 685 event pairs, 10 based on Foata normal form. 6/183 useless extension candidates. Maximal degree in co-relation 672. Up to 77 conditions per place. [2023-08-26 23:01:37,845 INFO L140 encePairwiseOnDemand]: 285/290 looper letters, 41 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-08-26 23:01:37,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 450 flow [2023-08-26 23:01:37,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 23:01:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 23:01:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 911 transitions. [2023-08-26 23:01:37,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39267241379310347 [2023-08-26 23:01:37,848 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 911 transitions. [2023-08-26 23:01:37,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 911 transitions. [2023-08-26 23:01:37,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:01:37,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 911 transitions. [2023-08-26 23:01:37,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.875) internal successors, (911), 8 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,855 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,855 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 285 flow. Second operand 8 states and 911 transitions. [2023-08-26 23:01:37,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 450 flow [2023-08-26 23:01:37,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 23:01:37,858 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 289 flow [2023-08-26 23:01:37,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=289, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2023-08-26 23:01:37,859 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2023-08-26 23:01:37,859 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 289 flow [2023-08-26 23:01:37,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 23:01:37,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:01:37,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:37,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 23:01:37,860 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 10 more)] === [2023-08-26 23:01:37,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:01:37,860 INFO L85 PathProgramCache]: Analyzing trace with hash -643356709, now seen corresponding path program 1 times [2023-08-26 23:01:37,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:01:37,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503054749] [2023-08-26 23:01:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:01:37,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:01:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 23:01:37,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 23:01:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 23:01:37,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 23:01:37,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 23:01:37,917 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2023-08-26 23:01:37,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-08-26 23:01:37,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-08-26 23:01:37,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-26 23:01:37,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (8 of 13 remaining) [2023-08-26 23:01:37,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-08-26 23:01:37,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONASSERT (6 of 13 remaining) [2023-08-26 23:01:37,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-08-26 23:01:37,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (4 of 13 remaining) [2023-08-26 23:01:37,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (3 of 13 remaining) [2023-08-26 23:01:37,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-08-26 23:01:37,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONASSERT (1 of 13 remaining) [2023-08-26 23:01:37,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONASSERT (0 of 13 remaining) [2023-08-26 23:01:37,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:01:37,923 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:01:37,929 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 23:01:37,929 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 23:01:37,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:01:37 BasicIcfg [2023-08-26 23:01:37,978 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 23:01:37,979 INFO L158 Benchmark]: Toolchain (without parser) took 8291.27ms. Allocated memory was 375.4MB in the beginning and 461.4MB in the end (delta: 86.0MB). Free memory was 328.4MB in the beginning and 216.3MB in the end (delta: 112.1MB). Peak memory consumption was 199.9MB. Max. memory is 16.0GB. [2023-08-26 23:01:37,979 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 375.4MB. Free memory was 353.1MB in the beginning and 352.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 23:01:37,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.06ms. Allocated memory is still 375.4MB. Free memory was 328.4MB in the beginning and 308.1MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 23:01:37,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.64ms. Allocated memory is still 375.4MB. Free memory was 308.1MB in the beginning and 306.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 23:01:37,979 INFO L158 Benchmark]: Boogie Preprocessor took 34.21ms. Allocated memory is still 375.4MB. Free memory was 306.1MB in the beginning and 305.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 23:01:37,980 INFO L158 Benchmark]: RCFGBuilder took 513.93ms. Allocated memory is still 375.4MB. Free memory was 305.0MB in the beginning and 286.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 23:01:37,980 INFO L158 Benchmark]: TraceAbstraction took 7271.27ms. Allocated memory was 375.4MB in the beginning and 461.4MB in the end (delta: 86.0MB). Free memory was 286.2MB in the beginning and 216.3MB in the end (delta: 69.8MB). Peak memory consumption was 157.9MB. Max. memory is 16.0GB. [2023-08-26 23:01:37,983 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 375.4MB. Free memory was 353.1MB in the beginning and 352.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 398.06ms. Allocated memory is still 375.4MB. Free memory was 328.4MB in the beginning and 308.1MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 67.64ms. Allocated memory is still 375.4MB. Free memory was 308.1MB in the beginning and 306.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.21ms. Allocated memory is still 375.4MB. Free memory was 306.1MB in the beginning and 305.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 513.93ms. Allocated memory is still 375.4MB. Free memory was 305.0MB in the beginning and 286.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 7271.27ms. Allocated memory was 375.4MB in the beginning and 461.4MB in the end (delta: 86.0MB). Free memory was 286.2MB in the beginning and 216.3MB in the end (delta: 69.8MB). Peak memory consumption was 157.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 140 PlacesBefore, 39 PlacesAfterwards, 143 TransitionsBefore, 39 TransitionsAfterwards, 4118 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 145 TotalNumberOfCompositions, 12645 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5376, independent: 4994, independent conditional: 0, independent unconditional: 4994, dependent: 382, dependent conditional: 0, dependent unconditional: 382, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2384, independent: 2316, independent conditional: 0, independent unconditional: 2316, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5376, independent: 2678, independent conditional: 0, independent unconditional: 2678, dependent: 314, dependent conditional: 0, dependent unconditional: 314, unknown: 2384, unknown conditional: 0, unknown unconditional: 2384] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 142, Positive conditional cache size: 0, Positive unconditional cache size: 142, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 701]: integer overflow possible integer overflow possible We found a FailurePath: [L682] 0 int g = 0; [L683] 0 int h = 0; [L684] 0 int i = 0; [L685] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L686] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L687] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L710] 0 int x = __VERIFIER_nondet_int(); [L711] COND TRUE 0 x > -1000 [L712] 0 pthread_t id; [L713] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, id={6:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=2147483617] [L689] 1 int x = __VERIFIER_nondet_int(); [L690] 1 int y = __VERIFIER_nondet_int(); [L691] 1 int z = __VERIFIER_nondet_int(); [L692] COND TRUE 1 x < 1000 [L716] 0 i = 11 VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=11, id={6:0}, x=2147483617] [L717] 0 g = x [L718] EXPR 0 x - 17 [L718] 0 h = x - 17 VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483600, i=11, id={6:0}, x=2147483617] [L721] 0 h = x VAL [A={3:0}, B={4:0}, C={5:0}, g=2147483617, h=2147483617, i=11, id={6:0}, x=2147483617] [L695] 1 x = g VAL [A={3:0}, B={4:0}, C={5:0}, arg={0:0}, arg={0:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=0, z=0] [L696] 1 y = h [L697] CALL 1 __VERIFIER_assert(y <= x) [L19] COND FALSE 1 !(!(cond)) [L697] RET 1 __VERIFIER_assert(y <= x) [L699] CALL 1 __VERIFIER_assert(x == y) [L19] COND FALSE 1 !(!(cond)) [L699] RET 1 __VERIFIER_assert(x == y) [L701] 1 x + 31 VAL [A={3:0}, B={4:0}, C={5:0}, arg={0:0}, arg={0:0}, g=2147483617, h=2147483617, i=11, x=2147483617, y=2147483617, z=0] - UnprovableResult [Line: 718]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 204 locations, 13 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: 7.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 678 IncrementalHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 15 mSDtfsCounter, 678 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=289occurred in iteration=10, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-26 23:01:38,008 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...