/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/13-privatized_42-traces-ex-mini_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:24:08,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:24:08,204 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 22:24:08,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:24:08,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:24:08,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:24:08,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:24:08,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:24:08,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:24:08,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:24:08,241 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:24:08,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:24:08,242 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:24:08,242 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:24:08,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:24:08,243 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:24:08,243 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:24:08,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:24:08,244 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:24:08,244 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:24:08,244 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:24:08,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:24:08,253 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:24:08,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:24:08,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:24:08,254 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:24:08,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:24:08,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:24:08,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:24:08,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:24:08,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:24:08,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:24:08,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:24:08,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:24:08,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:24:08,257 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:24:08,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:24:08,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:24:08,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:24:08,558 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:24:08,558 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:24:08,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-26 22:24:09,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:24:09,999 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:24:09,999 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2023-08-26 22:24:10,014 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82bbacd0/5c2c7300e0434635afee9bbbd0319b95/FLAG50b6cb04a [2023-08-26 22:24:10,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82bbacd0/5c2c7300e0434635afee9bbbd0319b95 [2023-08-26 22:24:10,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:24:10,027 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:24:10,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:24:10,028 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:24:10,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:24:10,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd46915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10, skipping insertion in model container [2023-08-26 22:24:10,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,074 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:24:10,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:24:10,374 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:24:10,403 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-26 22:24:10,404 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-26 22:24:10,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:24:10,461 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:24:10,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10 WrapperNode [2023-08-26 22:24:10,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:24:10,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:24:10,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:24:10,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:24:10,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,516 INFO L138 Inliner]: procedures = 162, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2023-08-26 22:24:10,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:24:10,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:24:10,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:24:10,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:24:10,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,549 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:24:10,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:24:10,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:24:10,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:24:10,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (1/1) ... [2023-08-26 22:24:10,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:24:10,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:24:10,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 22:24:10,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 22:24:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:24:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:24:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:24:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:24:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:24:10,615 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:24:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:24:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:24:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:24:10,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:24:10,618 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:24:10,718 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:24:10,719 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:24:10,845 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:24:10,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:24:10,851 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 22:24:10,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:24:10 BoogieIcfgContainer [2023-08-26 22:24:10,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:24:10,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:24:10,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:24:10,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:24:10,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:24:10" (1/3) ... [2023-08-26 22:24:10,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a4b76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:24:10, skipping insertion in model container [2023-08-26 22:24:10,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:24:10" (2/3) ... [2023-08-26 22:24:10,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a4b76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:24:10, skipping insertion in model container [2023-08-26 22:24:10,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:24:10" (3/3) ... [2023-08-26 22:24:10,859 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_42-traces-ex-mini_true.i [2023-08-26 22:24:10,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:24:10,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-26 22:24:10,873 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:24:10,910 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 22:24:10,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 157 flow [2023-08-26 22:24:10,975 INFO L124 PetriNetUnfolderBase]: 2/75 cut-off events. [2023-08-26 22:24:10,975 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:24:10,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 75 events. 2/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-08-26 22:24:10,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 76 transitions, 157 flow [2023-08-26 22:24:10,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 127 flow [2023-08-26 22:24:10,984 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:24:10,992 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 62 transitions, 127 flow [2023-08-26 22:24:10,994 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 62 transitions, 127 flow [2023-08-26 22:24:10,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 62 transitions, 127 flow [2023-08-26 22:24:11,012 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-08-26 22:24:11,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:24:11,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 0/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-26 22:24:11,013 INFO L119 LiptonReduction]: Number of co-enabled transitions 330 [2023-08-26 22:24:13,587 INFO L134 LiptonReduction]: Checked pairs total: 782 [2023-08-26 22:24:13,587 INFO L136 LiptonReduction]: Total number of compositions: 50 [2023-08-26 22:24:13,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:24:13,603 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;@4e829a19, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:24:13,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-26 22:24:13,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:24:13,606 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-26 22:24:13,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:24:13,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:24:13,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:24:13,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:24:13,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:24:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1152100839, now seen corresponding path program 1 times [2023-08-26 22:24:13,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:24:13,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171841766] [2023-08-26 22:24:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:24:13,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:24:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:24:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:24:13,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:24:13,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171841766] [2023-08-26 22:24:13,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171841766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:24:13,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:24:13,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:24:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147455683] [2023-08-26 22:24:13,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:24:13,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:24:13,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:24:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:24:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:24:13,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 126 [2023-08-26 22:24:13,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 12 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:13,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:24:13,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 126 [2023-08-26 22:24:13,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:24:14,007 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2023-08-26 22:24:14,007 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:24:14,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 42 events. 12/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 9 based on Foata normal form. 4/45 useless extension candidates. Maximal degree in co-relation 74. Up to 28 conditions per place. [2023-08-26 22:24:14,009 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2023-08-26 22:24:14,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 59 flow [2023-08-26 22:24:14,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:24:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:24:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-08-26 22:24:14,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2023-08-26 22:24:14,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-08-26 22:24:14,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-08-26 22:24:14,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:24:14,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-08-26 22:24:14,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,038 INFO L175 Difference]: Start difference. First operand has 16 places, 12 transitions, 27 flow. Second operand 3 states and 218 transitions. [2023-08-26 22:24:14,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 59 flow [2023-08-26 22:24:14,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:24:14,041 INFO L231 Difference]: Finished difference. Result has 18 places, 12 transitions, 37 flow [2023-08-26 22:24:14,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=18, PETRI_TRANSITIONS=12} [2023-08-26 22:24:14,046 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-26 22:24:14,046 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 12 transitions, 37 flow [2023-08-26 22:24:14,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:24:14,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:24:14,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:24:14,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:24:14,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:24:14,048 INFO L85 PathProgramCache]: Analyzing trace with hash -746938268, now seen corresponding path program 1 times [2023-08-26 22:24:14,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:24:14,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350199881] [2023-08-26 22:24:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:24:14,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:24:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:24:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:24:14,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:24:14,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350199881] [2023-08-26 22:24:14,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350199881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:24:14,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:24:14,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:24:14,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828967381] [2023-08-26 22:24:14,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:24:14,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:24:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:24:14,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:24:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 22:24:14,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2023-08-26 22:24:14,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 12 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:24:14,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2023-08-26 22:24:14,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:24:14,245 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2023-08-26 22:24:14,245 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 22:24:14,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 31 events. 7/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 2 based on Foata normal form. 5/36 useless extension candidates. Maximal degree in co-relation 63. Up to 19 conditions per place. [2023-08-26 22:24:14,246 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 8 selfloop transitions, 4 changer transitions 1/14 dead transitions. [2023-08-26 22:24:14,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 67 flow [2023-08-26 22:24:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:24:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:24:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2023-08-26 22:24:14,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42658730158730157 [2023-08-26 22:24:14,248 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 215 transitions. [2023-08-26 22:24:14,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 215 transitions. [2023-08-26 22:24:14,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:24:14,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 215 transitions. [2023-08-26 22:24:14,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,251 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,251 INFO L175 Difference]: Start difference. First operand has 18 places, 12 transitions, 37 flow. Second operand 4 states and 215 transitions. [2023-08-26 22:24:14,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 67 flow [2023-08-26 22:24:14,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 61 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:24:14,252 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 39 flow [2023-08-26 22:24:14,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=39, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2023-08-26 22:24:14,253 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 3 predicate places. [2023-08-26 22:24:14,253 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 39 flow [2023-08-26 22:24:14,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:24:14,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:24:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:24:14,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 22:24:14,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:24:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1682751061, now seen corresponding path program 1 times [2023-08-26 22:24:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:24:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123496575] [2023-08-26 22:24:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:24:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:24:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:24:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:24:14,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:24:14,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123496575] [2023-08-26 22:24:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123496575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:24:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:24:14,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 22:24:14,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527363899] [2023-08-26 22:24:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:24:14,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:24:14,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:24:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:24:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:24:14,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 126 [2023-08-26 22:24:14,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 39 flow. Second operand has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:24:14,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 126 [2023-08-26 22:24:14,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:24:14,368 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2023-08-26 22:24:14,368 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 22:24:14,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 2 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 55. Up to 12 conditions per place. [2023-08-26 22:24:14,369 INFO L140 encePairwiseOnDemand]: 122/126 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2023-08-26 22:24:14,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 65 flow [2023-08-26 22:24:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:24:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:24:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 213 transitions. [2023-08-26 22:24:14,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2023-08-26 22:24:14,371 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 213 transitions. [2023-08-26 22:24:14,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 213 transitions. [2023-08-26 22:24:14,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:24:14,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 213 transitions. [2023-08-26 22:24:14,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,373 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 126.0) internal successors, (630), 5 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,373 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 39 flow. Second operand 4 states and 213 transitions. [2023-08-26 22:24:14,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 65 flow [2023-08-26 22:24:14,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 22:24:14,374 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-26 22:24:14,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-26 22:24:14,375 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2023-08-26 22:24:14,375 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-26 22:24:14,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:24:14,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (1 of 2 remaining) [2023-08-26 22:24:14,378 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-26 22:24:14,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:24:14,378 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 22:24:14,381 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 22:24:14,381 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 22:24:14,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:24:14 BasicIcfg [2023-08-26 22:24:14,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 22:24:14,384 INFO L158 Benchmark]: Toolchain (without parser) took 4356.44ms. Allocated memory was 383.8MB in the beginning and 461.4MB in the end (delta: 77.6MB). Free memory was 359.0MB in the beginning and 324.8MB in the end (delta: 34.1MB). Peak memory consumption was 111.2MB. Max. memory is 16.0GB. [2023-08-26 22:24:14,384 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 383.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:24:14,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.85ms. Allocated memory is still 383.8MB. Free memory was 359.0MB in the beginning and 340.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 22:24:14,385 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.08ms. Allocated memory is still 383.8MB. Free memory was 340.1MB in the beginning and 338.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 22:24:14,385 INFO L158 Benchmark]: Boogie Preprocessor took 35.69ms. Allocated memory is still 383.8MB. Free memory was 338.0MB in the beginning and 336.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 22:24:14,386 INFO L158 Benchmark]: RCFGBuilder took 298.76ms. Allocated memory is still 383.8MB. Free memory was 336.5MB in the beginning and 322.8MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 22:24:14,386 INFO L158 Benchmark]: TraceAbstraction took 3528.84ms. Allocated memory was 383.8MB in the beginning and 461.4MB in the end (delta: 77.6MB). Free memory was 322.3MB in the beginning and 324.8MB in the end (delta: -2.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.0GB. [2023-08-26 22:24:14,388 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 383.8MB. Free memory is still 360.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 433.85ms. Allocated memory is still 383.8MB. Free memory was 359.0MB in the beginning and 340.1MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.08ms. Allocated memory is still 383.8MB. Free memory was 340.1MB in the beginning and 338.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.69ms. Allocated memory is still 383.8MB. Free memory was 338.0MB in the beginning and 336.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 298.76ms. Allocated memory is still 383.8MB. Free memory was 336.5MB in the beginning and 322.8MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3528.84ms. Allocated memory was 383.8MB in the beginning and 461.4MB in the end (delta: 77.6MB). Free memory was 322.3MB in the beginning and 324.8MB in the end (delta: -2.5MB). Peak memory consumption was 75.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 66 PlacesBefore, 16 PlacesAfterwards, 62 TransitionsBefore, 12 TransitionsAfterwards, 330 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 782 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 403, independent: 302, independent conditional: 0, independent unconditional: 302, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 173, independent: 153, independent conditional: 0, independent unconditional: 153, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 403, independent: 149, independent conditional: 0, independent unconditional: 149, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 173, unknown conditional: 0, unknown unconditional: 173] , Statistics on independence cache: Total cache size (in pairs): 17, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 88 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 1 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 22:24:14,408 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...