/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:49:44,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:49:44,816 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 04:49:44,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:49:44,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:49:44,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:49:44,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:49:44,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:49:44,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:49:44,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:49:44,855 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:49:44,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:49:44,856 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:49:44,857 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:49:44,857 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:49:44,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:49:44,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:49:44,858 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:49:44,858 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:49:44,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:49:44,859 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:49:44,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:49:44,859 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:49:44,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:49:44,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:49:44,860 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:49:44,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:49:44,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:49:44,861 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:49:44,861 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:49:44,862 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:49:44,863 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:49:44,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:49:44,863 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:49:44,863 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:49:44,863 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:49:45,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:49:45,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:49:45,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:49:45,214 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:49:45,215 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:49:45,216 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_true.i [2023-08-27 04:49:46,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:49:46,670 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:49:46,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_18-first-reads_true.i [2023-08-27 04:49:46,686 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0a616fc7/824e533c4b6949f6a16a3342e5d80892/FLAG0d4b2fec2 [2023-08-27 04:49:46,702 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0a616fc7/824e533c4b6949f6a16a3342e5d80892 [2023-08-27 04:49:46,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:49:46,705 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:49:46,706 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:49:46,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:49:46,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:49:46,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:49:46" (1/1) ... [2023-08-27 04:49:46,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164a8e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:46, skipping insertion in model container [2023-08-27 04:49:46,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:49:46" (1/1) ... [2023-08-27 04:49:46,764 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:49:47,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:49:47,098 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:49:47,124 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 04:49:47,126 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-27 04:49:47,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:49:47,186 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:49:47,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47 WrapperNode [2023-08-27 04:49:47,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:49:47,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:49:47,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:49:47,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:49:47,193 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,241 INFO L138 Inliner]: procedures = 163, calls = 23, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 54 [2023-08-27 04:49:47,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:49:47,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:49:47,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:49:47,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:49:47,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,258 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,276 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:49:47,277 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:49:47,277 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:49:47,277 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:49:47,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (1/1) ... [2023-08-27 04:49:47,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:49:47,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:49:47,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 04:49:47,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 04:49:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:49:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:49:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:49:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:49:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:49:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 04:49:47,349 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 04:49:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:49:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:49:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:49:47,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:49:47,351 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:49:47,490 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:49:47,492 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:49:47,606 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:49:47,612 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:49:47,612 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 04:49:47,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:47 BoogieIcfgContainer [2023-08-27 04:49:47,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:49:47,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:49:47,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:49:47,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:49:47,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:49:46" (1/3) ... [2023-08-27 04:49:47,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26083c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:49:47, skipping insertion in model container [2023-08-27 04:49:47,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:49:47" (2/3) ... [2023-08-27 04:49:47,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26083c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:49:47, skipping insertion in model container [2023-08-27 04:49:47,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:49:47" (3/3) ... [2023-08-27 04:49:47,621 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_18-first-reads_true.i [2023-08-27 04:49:47,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:49:47,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-27 04:49:47,636 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:49:47,700 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 04:49:47,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 75 transitions, 158 flow [2023-08-27 04:49:47,769 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2023-08-27 04:49:47,770 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 04:49:47,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 5/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-27 04:49:47,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 75 transitions, 158 flow [2023-08-27 04:49:47,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 67 transitions, 137 flow [2023-08-27 04:49:47,780 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:49:47,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 67 transitions, 137 flow [2023-08-27 04:49:47,790 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 67 transitions, 137 flow [2023-08-27 04:49:47,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 67 transitions, 137 flow [2023-08-27 04:49:47,830 INFO L124 PetriNetUnfolderBase]: 5/67 cut-off events. [2023-08-27 04:49:47,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:49:47,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 67 events. 5/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-27 04:49:47,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-08-27 04:49:49,904 INFO L134 LiptonReduction]: Checked pairs total: 1042 [2023-08-27 04:49:49,904 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-27 04:49:49,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:49:49,922 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;@10e21562, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:49:49,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 04:49:49,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:49:49,923 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 04:49:49,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:49:49,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:49:49,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 04:49:49,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 04:49:49,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:49:49,929 INFO L85 PathProgramCache]: Analyzing trace with hash 293, now seen corresponding path program 1 times [2023-08-27 04:49:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:49:49,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872261698] [2023-08-27 04:49:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:49:49,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:49:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:49:50,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:49:50,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:49:50,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872261698] [2023-08-27 04:49:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872261698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:49:50,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:49:50,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 04:49:50,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112545047] [2023-08-27 04:49:50,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:49:50,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 04:49:50,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:49:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 04:49:50,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 04:49:50,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 149 [2023-08-27 04:49:50,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 14 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:49:50,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 149 [2023-08-27 04:49:50,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:49:50,139 INFO L124 PetriNetUnfolderBase]: 25/56 cut-off events. [2023-08-27 04:49:50,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:49:50,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 56 events. 25/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 149 event pairs, 20 based on Foata normal form. 5/45 useless extension candidates. Maximal degree in co-relation 103. Up to 52 conditions per place. [2023-08-27 04:49:50,142 INFO L140 encePairwiseOnDemand]: 147/149 looper letters, 10 selfloop transitions, 0 changer transitions 1/12 dead transitions. [2023-08-27 04:49:50,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 12 transitions, 49 flow [2023-08-27 04:49:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 04:49:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 04:49:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 147 transitions. [2023-08-27 04:49:50,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49328859060402686 [2023-08-27 04:49:50,156 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 147 transitions. [2023-08-27 04:49:50,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 147 transitions. [2023-08-27 04:49:50,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:49:50,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 147 transitions. [2023-08-27 04:49:50,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,171 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,173 INFO L175 Difference]: Start difference. First operand has 16 places, 14 transitions, 31 flow. Second operand 2 states and 147 transitions. [2023-08-27 04:49:50,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 12 transitions, 49 flow [2023-08-27 04:49:50,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:49:50,178 INFO L231 Difference]: Finished difference. Result has 15 places, 11 transitions, 24 flow [2023-08-27 04:49:50,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=24, PETRI_PLACES=15, PETRI_TRANSITIONS=11} [2023-08-27 04:49:50,183 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-08-27 04:49:50,183 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 11 transitions, 24 flow [2023-08-27 04:49:50,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.5) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:49:50,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 04:49:50,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:49:50,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 04:49:50,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:49:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash 8946702, now seen corresponding path program 1 times [2023-08-27 04:49:50,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:49:50,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774849432] [2023-08-27 04:49:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:49:50,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:49:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:49:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:49:50,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:49:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774849432] [2023-08-27 04:49:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774849432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:49:50,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:49:50,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 04:49:50,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676528644] [2023-08-27 04:49:50,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:49:50,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:49:50,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:49:50,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:49:50,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:49:50,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 149 [2023-08-27 04:49:50,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 24 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:49:50,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 149 [2023-08-27 04:49:50,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:49:50,493 INFO L124 PetriNetUnfolderBase]: 11/33 cut-off events. [2023-08-27 04:49:50,494 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:49:50,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 33 events. 11/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 6 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 68. Up to 26 conditions per place. [2023-08-27 04:49:50,494 INFO L140 encePairwiseOnDemand]: 144/149 looper letters, 6 selfloop transitions, 3 changer transitions 4/13 dead transitions. [2023-08-27 04:49:50,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 13 transitions, 54 flow [2023-08-27 04:49:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:49:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:49:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-08-27 04:49:50,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429530201342282 [2023-08-27 04:49:50,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-08-27 04:49:50,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-08-27 04:49:50,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:49:50,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-08-27 04:49:50,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,499 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 24 flow. Second operand 3 states and 198 transitions. [2023-08-27 04:49:50,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 13 transitions, 54 flow [2023-08-27 04:49:50,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 13 transitions, 54 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 04:49:50,500 INFO L231 Difference]: Finished difference. Result has 17 places, 8 transitions, 29 flow [2023-08-27 04:49:50,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=29, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2023-08-27 04:49:50,501 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, 1 predicate places. [2023-08-27 04:49:50,501 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 29 flow [2023-08-27 04:49:50,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:49:50,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:49:50,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:49:50,502 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 04:49:50,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:49:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash 7837266, now seen corresponding path program 1 times [2023-08-27 04:49:50,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:49:50,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011343287] [2023-08-27 04:49:50,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:49:50,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:49:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:49:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:49:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:49:50,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011343287] [2023-08-27 04:49:50,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011343287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:49:50,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:49:50,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:49:50,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403598864] [2023-08-27 04:49:50,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:49:50,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:49:50,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:49:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:49:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:49:50,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 149 [2023-08-27 04:49:50,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 8 transitions, 29 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 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) [2023-08-27 04:49:50,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:49:50,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 149 [2023-08-27 04:49:50,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:49:50,674 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-27 04:49:50,674 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:49:50,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 8 events. 0/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 4/12 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-08-27 04:49:50,675 INFO L140 encePairwiseOnDemand]: 143/149 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-27 04:49:50,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 7 transitions, 39 flow [2023-08-27 04:49:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 04:49:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 04:49:50,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 265 transitions. [2023-08-27 04:49:50,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35570469798657717 [2023-08-27 04:49:50,680 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 265 transitions. [2023-08-27 04:49:50,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 265 transitions. [2023-08-27 04:49:50,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:49:50,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 265 transitions. [2023-08-27 04:49:50,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 149.0) internal successors, (894), 6 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 149.0) internal successors, (894), 6 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:49:50,685 INFO L175 Difference]: Start difference. First operand has 17 places, 8 transitions, 29 flow. Second operand 5 states and 265 transitions. [2023-08-27 04:49:50,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 7 transitions, 39 flow [2023-08-27 04:49:50,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:49:50,686 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-27 04:49:50,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-27 04:49:50,688 INFO L281 CegarLoopForPetriNet]: 16 programPoint places, -1 predicate places. [2023-08-27 04:49:50,690 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-27 04:49:50,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 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) [2023-08-27 04:49:50,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2023-08-27 04:49:50,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2023-08-27 04:49:50,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 04:49:50,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:49:50,694 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-27 04:49:50,698 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 04:49:50,699 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 04:49:50,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:49:50 BasicIcfg [2023-08-27 04:49:50,703 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 04:49:50,704 INFO L158 Benchmark]: Toolchain (without parser) took 3998.67ms. Allocated memory was 354.4MB in the beginning and 448.8MB in the end (delta: 94.4MB). Free memory was 329.6MB in the beginning and 399.8MB in the end (delta: -70.2MB). Peak memory consumption was 25.7MB. Max. memory is 16.0GB. [2023-08-27 04:49:50,706 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 354.4MB. Free memory is still 331.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:49:50,707 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.31ms. Allocated memory is still 354.4MB. Free memory was 329.6MB in the beginning and 310.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 04:49:50,709 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.21ms. Allocated memory is still 354.4MB. Free memory was 310.7MB in the beginning and 308.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 04:49:50,709 INFO L158 Benchmark]: Boogie Preprocessor took 33.71ms. Allocated memory is still 354.4MB. Free memory was 308.6MB in the beginning and 307.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:49:50,710 INFO L158 Benchmark]: RCFGBuilder took 337.16ms. Allocated memory is still 354.4MB. Free memory was 307.1MB in the beginning and 294.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 04:49:50,710 INFO L158 Benchmark]: TraceAbstraction took 3087.87ms. Allocated memory was 354.4MB in the beginning and 448.8MB in the end (delta: 94.4MB). Free memory was 293.9MB in the beginning and 399.8MB in the end (delta: -105.9MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:49:50,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 354.4MB. Free memory is still 331.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 480.31ms. Allocated memory is still 354.4MB. Free memory was 329.6MB in the beginning and 310.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.21ms. Allocated memory is still 354.4MB. Free memory was 310.7MB in the beginning and 308.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.71ms. Allocated memory is still 354.4MB. Free memory was 308.6MB in the beginning and 307.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 337.16ms. Allocated memory is still 354.4MB. Free memory was 307.1MB in the beginning and 294.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3087.87ms. Allocated memory was 354.4MB in the beginning and 448.8MB in the end (delta: 94.4MB). Free memory was 293.9MB in the beginning and 399.8MB in the end (delta: -105.9MB). There was no memory consumed. 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: 2.1s, 66 PlacesBefore, 16 PlacesAfterwards, 67 TransitionsBefore, 14 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 6 ConcurrentYvCompositions, 3 ChoiceCompositions, 74 TotalNumberOfCompositions, 1042 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 602, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 301, independent: 280, independent conditional: 0, independent unconditional: 280, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 602, independent: 226, independent conditional: 0, independent unconditional: 226, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 301, unknown conditional: 0, unknown unconditional: 301] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - 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, 87 locations, 3 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: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 2 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 0.4s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 04:49:50,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...