/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/pthread/bigshot_s2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:42:39,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:42:39,959 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 02:42:39,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:42:39,962 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:42:39,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:42:39,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:42:39,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:42:39,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:42:39,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:42:39,977 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:42:39,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:42:39,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:42:39,978 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:42:39,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:42:39,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:42:39,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:42:39,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:42:39,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:42:39,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:42:39,979 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:42:39,980 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:42:39,980 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:42:39,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:42:39,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:42:39,981 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:42:39,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:42:39,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:42:39,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:42:39,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:42:39,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:42:39,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:42:39,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:42:39,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:42:39,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:42:39,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:42:40,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:42:40,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:42:40,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:42:40,238 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:42:40,241 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:42:40,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2023-08-27 02:42:41,250 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:42:41,505 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:42:41,505 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2023-08-27 02:42:41,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fad9bf9b/cd4417ce4f3e4ddea85d4954e77e8ef3/FLAG38ae158df [2023-08-27 02:42:41,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fad9bf9b/cd4417ce4f3e4ddea85d4954e77e8ef3 [2023-08-27 02:42:41,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:42:41,543 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:42:41,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:42:41,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:42:41,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:42:41,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:41,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3562cb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41, skipping insertion in model container [2023-08-27 02:42:41,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:41,591 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:42:41,886 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:42:41,892 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:42:41,903 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-27 02:42:41,904 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-27 02:42:41,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:42:41,961 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:42:41,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41 WrapperNode [2023-08-27 02:42:41,961 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:42:41,962 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:42:41,962 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:42:41,962 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:42:41,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:41,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:41,991 INFO L138 Inliner]: procedures = 323, calls = 34, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-27 02:42:41,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:42:41,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:42:41,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:42:41,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:42:41,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:41,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:41,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:41,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:42,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:42,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:42,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:42,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:42,007 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:42:42,008 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:42:42,008 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:42:42,008 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:42:42,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (1/1) ... [2023-08-27 02:42:42,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:42:42,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:42:42,050 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 02:42:42,069 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 02:42:42,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:42:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:42:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-08-27 02:42:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:42:42,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 02:42:42,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 02:42:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 02:42:42,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 02:42:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:42:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 02:42:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:42:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:42:42,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:42:42,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:42:42,080 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 02:42:42,218 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:42:42,219 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:42:42,337 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:42:42,341 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:42:42,341 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-27 02:42:42,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:42:42 BoogieIcfgContainer [2023-08-27 02:42:42,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:42:42,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:42:42,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:42:42,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:42:42,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:42:41" (1/3) ... [2023-08-27 02:42:42,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef6388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:42:42, skipping insertion in model container [2023-08-27 02:42:42,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:42:41" (2/3) ... [2023-08-27 02:42:42,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef6388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:42:42, skipping insertion in model container [2023-08-27 02:42:42,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:42:42" (3/3) ... [2023-08-27 02:42:42,347 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-08-27 02:42:42,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:42:42,358 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 02:42:42,358 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:42:42,404 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:42:42,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 86 transitions, 188 flow [2023-08-27 02:42:42,453 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-08-27 02:42:42,453 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:42:42,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-27 02:42:42,464 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 86 transitions, 188 flow [2023-08-27 02:42:42,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 71 transitions, 154 flow [2023-08-27 02:42:42,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:42:42,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 71 transitions, 154 flow [2023-08-27 02:42:42,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 71 transitions, 154 flow [2023-08-27 02:42:42,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 71 transitions, 154 flow [2023-08-27 02:42:42,491 INFO L124 PetriNetUnfolderBase]: 3/71 cut-off events. [2023-08-27 02:42:42,491 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:42:42,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 3/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-08-27 02:42:42,492 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-08-27 02:42:44,627 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-08-27 02:42:44,628 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-08-27 02:42:44,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:42:44,640 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;@770b33ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:42:44,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 02:42:44,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:42:44,644 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-27 02:42:44,644 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:42:44,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:44,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:44,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 02:42:44,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1737152627, now seen corresponding path program 1 times [2023-08-27 02:42:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:44,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010076575] [2023-08-27 02:42:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:44,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:44,927 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 02:42:44,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:44,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010076575] [2023-08-27 02:42:44,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010076575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:42:44,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:42:44,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:42:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387157978] [2023-08-27 02:42:44,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:42:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:42:44,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:42:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:42:44,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 148 [2023-08-27 02:42:44,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 02:42:44,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:44,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 148 [2023-08-27 02:42:44,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:44,999 INFO L124 PetriNetUnfolderBase]: 5/20 cut-off events. [2023-08-27 02:42:44,999 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:42:44,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-08-27 02:42:45,000 INFO L140 encePairwiseOnDemand]: 146/148 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-27 02:42:45,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-08-27 02:42:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:42:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:42:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-27 02:42:45,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2023-08-27 02:42:45,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-27 02:42:45,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-27 02:42:45,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:45,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-27 02:42:45,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 02:42:45,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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 02:42:45,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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 02:42:45,017 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 231 transitions. [2023-08-27 02:42:45,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-08-27 02:42:45,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 02:42:45,020 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-08-27 02:42:45,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-08-27 02:42:45,023 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-08-27 02:42:45,023 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-08-27 02:42:45,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 02:42:45,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:45,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:45,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:42:45,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 02:42:45,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1979471635, now seen corresponding path program 1 times [2023-08-27 02:42:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151846409] [2023-08-27 02:42:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:45,499 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 02:42:45,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:45,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151846409] [2023-08-27 02:42:45,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151846409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:42:45,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:42:45,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 02:42:45,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71628744] [2023-08-27 02:42:45,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:42:45,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 02:42:45,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:45,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 02:42:45,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 02:42:45,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 148 [2023-08-27 02:42:45,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 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 02:42:45,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:45,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 148 [2023-08-27 02:42:45,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:45,578 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-08-27 02:42:45,578 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:42:45,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 45. Up to 13 conditions per place. [2023-08-27 02:42:45,580 INFO L140 encePairwiseOnDemand]: 144/148 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-08-27 02:42:45,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 82 flow [2023-08-27 02:42:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 02:42:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 02:42:45,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 245 transitions. [2023-08-27 02:42:45,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3310810810810811 [2023-08-27 02:42:45,585 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 245 transitions. [2023-08-27 02:42:45,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 245 transitions. [2023-08-27 02:42:45,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:45,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 245 transitions. [2023-08-27 02:42:45,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 49.0) internal successors, (245), 5 states have internal predecessors, (245), 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 02:42:45,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 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 02:42:45,590 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 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 02:42:45,590 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 5 states and 245 transitions. [2023-08-27 02:42:45,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 82 flow [2023-08-27 02:42:45,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:42:45,591 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 58 flow [2023-08-27 02:42:45,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-27 02:42:45,592 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-27 02:42:45,592 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 58 flow [2023-08-27 02:42:45,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 46.5) internal successors, (372), 8 states have internal predecessors, (372), 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 02:42:45,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:45,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:45,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:42:45,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 02:42:45,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1233626283, now seen corresponding path program 1 times [2023-08-27 02:42:45,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:45,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429877772] [2023-08-27 02:42:45,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:45,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:42:45,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:45,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429877772] [2023-08-27 02:42:45,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429877772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:42:45,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731756531] [2023-08-27 02:42:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:45,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:42:45,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:42:45,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:42:45,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:42:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:45,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 02:42:45,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:42:46,003 INFO L322 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-08-27 02:42:46,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-08-27 02:42:46,028 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:46,080 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:46,153 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-27 02:42:46,153 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 02:42:46,184 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 02:42:46,184 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-27 02:42:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:42:46,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:42:46,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:42:46,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731756531] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:42:46,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:42:46,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-08-27 02:42:46,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180863638] [2023-08-27 02:42:46,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:42:46,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 02:42:46,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:46,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 02:42:46,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-08-27 02:42:46,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 148 [2023-08-27 02:42:46,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 58 flow. Second operand has 18 states, 18 states have (on average 42.0) internal successors, (756), 18 states have internal predecessors, (756), 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 02:42:46,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:46,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 148 [2023-08-27 02:42:46,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:46,606 INFO L124 PetriNetUnfolderBase]: 14/45 cut-off events. [2023-08-27 02:42:46,607 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 02:42:46,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-08-27 02:42:46,607 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-08-27 02:42:46,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 163 flow [2023-08-27 02:42:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 02:42:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 02:42:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 393 transitions. [2023-08-27 02:42:46,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29504504504504503 [2023-08-27 02:42:46,609 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 393 transitions. [2023-08-27 02:42:46,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 393 transitions. [2023-08-27 02:42:46,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:46,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 393 transitions. [2023-08-27 02:42:46,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.666666666666664) internal successors, (393), 9 states have internal predecessors, (393), 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 02:42:46,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 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 02:42:46,612 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 148.0) internal successors, (1480), 10 states have internal predecessors, (1480), 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 02:42:46,612 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 58 flow. Second operand 9 states and 393 transitions. [2023-08-27 02:42:46,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 163 flow [2023-08-27 02:42:46,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 157 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 02:42:46,613 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 98 flow [2023-08-27 02:42:46,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-08-27 02:42:46,614 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-08-27 02:42:46,614 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 98 flow [2023-08-27 02:42:46,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 42.0) internal successors, (756), 18 states have internal predecessors, (756), 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 02:42:46,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:46,614 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:46,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 02:42:46,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:42:46,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 02:42:46,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:46,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1523647213, now seen corresponding path program 2 times [2023-08-27 02:42:46,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:46,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626063730] [2023-08-27 02:42:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:46,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:42:47,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626063730] [2023-08-27 02:42:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626063730] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:42:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588424645] [2023-08-27 02:42:47,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 02:42:47,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:42:47,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:42:47,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:42:47,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:42:47,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 02:42:47,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:42:47,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-27 02:42:47,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:42:47,410 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-08-27 02:42:47,411 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 46 [2023-08-27 02:42:47,432 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:47,470 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 02:42:47,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-27 02:42:47,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:47,553 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:47,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:47,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:47,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:47,677 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:42:47,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:42:47,701 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-08-27 02:42:47,705 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 2 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-08-27 02:42:47,709 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-08-27 02:42:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2023-08-27 02:42:47,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588424645] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:42:47,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:42:47,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-08-27 02:42:47,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146956837] [2023-08-27 02:42:47,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:42:47,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 02:42:47,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:42:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 02:42:47,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=484, Unknown=10, NotChecked=138, Total=702 [2023-08-27 02:42:47,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 148 [2023-08-27 02:42:47,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 98 flow. Second operand has 27 states, 27 states have (on average 40.629629629629626) internal successors, (1097), 27 states have internal predecessors, (1097), 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 02:42:47,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:42:47,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 148 [2023-08-27 02:42:47,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:42:48,516 INFO L124 PetriNetUnfolderBase]: 17/52 cut-off events. [2023-08-27 02:42:48,516 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-08-27 02:42:48,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 52 events. 17/52 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 1 based on Foata normal form. 4/56 useless extension candidates. Maximal degree in co-relation 194. Up to 18 conditions per place. [2023-08-27 02:42:48,517 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 16 selfloop transitions, 18 changer transitions 4/38 dead transitions. [2023-08-27 02:42:48,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 274 flow [2023-08-27 02:42:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-27 02:42:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-27 02:42:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 548 transitions. [2023-08-27 02:42:48,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28482328482328484 [2023-08-27 02:42:48,519 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 548 transitions. [2023-08-27 02:42:48,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 548 transitions. [2023-08-27 02:42:48,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:42:48,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 548 transitions. [2023-08-27 02:42:48,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.15384615384615) internal successors, (548), 13 states have internal predecessors, (548), 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 02:42:48,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 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 02:42:48,522 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 148.0) internal successors, (2072), 14 states have internal predecessors, (2072), 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 02:42:48,522 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 98 flow. Second operand 13 states and 548 transitions. [2023-08-27 02:42:48,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 274 flow [2023-08-27 02:42:48,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 236 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-08-27 02:42:48,524 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 175 flow [2023-08-27 02:42:48,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=175, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2023-08-27 02:42:48,524 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 22 predicate places. [2023-08-27 02:42:48,525 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 175 flow [2023-08-27 02:42:48,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 40.629629629629626) internal successors, (1097), 27 states have internal predecessors, (1097), 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 02:42:48,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:42:48,525 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:42:48,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 02:42:48,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 02:42:48,731 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 02:42:48,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:42:48,731 INFO L85 PathProgramCache]: Analyzing trace with hash 11124395, now seen corresponding path program 3 times [2023-08-27 02:42:48,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:42:48,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823090794] [2023-08-27 02:42:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:42:48,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:42:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:42:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:42:49,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:42:49,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823090794] [2023-08-27 02:42:49,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823090794] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:42:49,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297536857] [2023-08-27 02:42:49,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 02:42:49,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:42:49,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:42:49,169 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:42:49,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 02:42:49,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 02:42:49,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 02:42:49,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-27 02:42:49,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:42:49,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:42:49,278 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:49,286 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-27 02:42:49,286 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-27 02:42:49,330 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-27 02:42:49,396 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-27 02:42:49,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-08-27 02:42:49,433 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 02:42:49,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-27 02:42:49,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:42:49,473 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 02:42:49,473 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-27 02:42:49,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:42:49,515 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 02:42:49,515 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-27 02:42:49,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:42:49,556 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 02:42:49,556 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-27 02:42:49,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 02:42:49,598 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 02:42:49,598 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-27 02:42:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:42:49,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:42:56,917 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_169 Int) (v_ArrVal_167 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_57| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_56| Int) (v_ArrVal_171 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_58| Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_57| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_58| 1)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_167) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_58| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_169) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_57| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_171) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_56| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) 0)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_56| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_57| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_58| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)))) is different from false [2023-08-27 02:43:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 4 refuted. 3 times theorem prover too weak. 0 trivial. 5 not checked. [2023-08-27 02:43:23,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297536857] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:43:23,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:43:23,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 29 [2023-08-27 02:43:23,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45993013] [2023-08-27 02:43:23,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:43:23,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 02:43:23,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:43:23,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 02:43:23,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=680, Unknown=14, NotChecked=54, Total=870 [2023-08-27 02:43:23,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 148 [2023-08-27 02:43:23,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 175 flow. Second operand has 30 states, 30 states have (on average 40.6) internal successors, (1218), 30 states have internal predecessors, (1218), 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 02:43:23,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:43:23,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 148 [2023-08-27 02:43:23,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:44:08,640 WARN L234 SmtUtils]: Spent 15.39s on a formula simplification. DAG size of input: 72 DAG size of output: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 02:44:13,027 INFO L124 PetriNetUnfolderBase]: 11/44 cut-off events. [2023-08-27 02:44:13,027 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-08-27 02:44:13,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 44 events. 11/44 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 1 based on Foata normal form. 6/50 useless extension candidates. Maximal degree in co-relation 158. Up to 12 conditions per place. [2023-08-27 02:44:13,028 INFO L140 encePairwiseOnDemand]: 142/148 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-27 02:44:13,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 33 transitions, 250 flow [2023-08-27 02:44:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 02:44:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 02:44:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 618 transitions. [2023-08-27 02:44:13,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27837837837837837 [2023-08-27 02:44:13,030 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 618 transitions. [2023-08-27 02:44:13,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 618 transitions. [2023-08-27 02:44:13,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:44:13,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 618 transitions. [2023-08-27 02:44:13,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 41.2) internal successors, (618), 15 states have internal predecessors, (618), 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 02:44:13,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 148.0) internal successors, (2368), 16 states have internal predecessors, (2368), 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 02:44:13,034 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 148.0) internal successors, (2368), 16 states have internal predecessors, (2368), 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 02:44:13,034 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 175 flow. Second operand 15 states and 618 transitions. [2023-08-27 02:44:13,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 33 transitions, 250 flow [2023-08-27 02:44:13,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 33 transitions, 192 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-08-27 02:44:13,035 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-27 02:44:13,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-27 02:44:13,036 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 25 predicate places. [2023-08-27 02:44:13,036 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-27 02:44:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 40.6) internal successors, (1218), 30 states have internal predecessors, (1218), 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 02:44:13,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2023-08-27 02:44:13,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 02:44:13,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 02:44:13,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 02:44:13,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:44:13,261 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-27 02:44:13,263 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:44:13,264 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:44:13,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:44:13 BasicIcfg [2023-08-27 02:44:13,269 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:44:13,269 INFO L158 Benchmark]: Toolchain (without parser) took 91725.94ms. Allocated memory was 417.3MB in the beginning and 660.6MB in the end (delta: 243.3MB). Free memory was 392.7MB in the beginning and 599.8MB in the end (delta: -207.1MB). Peak memory consumption was 37.3MB. Max. memory is 16.0GB. [2023-08-27 02:44:13,269 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 417.3MB. Free memory was 393.9MB in the beginning and 393.7MB in the end (delta: 165.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:44:13,269 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.71ms. Allocated memory is still 417.3MB. Free memory was 392.4MB in the beginning and 360.2MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-27 02:44:13,269 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.31ms. Allocated memory is still 417.3MB. Free memory was 360.2MB in the beginning and 357.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:44:13,272 INFO L158 Benchmark]: Boogie Preprocessor took 15.60ms. Allocated memory is still 417.3MB. Free memory was 357.8MB in the beginning and 356.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:44:13,272 INFO L158 Benchmark]: RCFGBuilder took 334.55ms. Allocated memory is still 417.3MB. Free memory was 356.1MB in the beginning and 388.2MB in the end (delta: -32.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.0GB. [2023-08-27 02:44:13,272 INFO L158 Benchmark]: TraceAbstraction took 90925.28ms. Allocated memory was 417.3MB in the beginning and 660.6MB in the end (delta: 243.3MB). Free memory was 387.6MB in the beginning and 599.8MB in the end (delta: -212.2MB). Peak memory consumption was 31.6MB. Max. memory is 16.0GB. [2023-08-27 02:44:13,277 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 417.3MB. Free memory was 393.9MB in the beginning and 393.7MB in the end (delta: 165.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 417.71ms. Allocated memory is still 417.3MB. Free memory was 392.4MB in the beginning and 360.2MB in the end (delta: 32.1MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.31ms. Allocated memory is still 417.3MB. Free memory was 360.2MB in the beginning and 357.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.60ms. Allocated memory is still 417.3MB. Free memory was 357.8MB in the beginning and 356.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 334.55ms. Allocated memory is still 417.3MB. Free memory was 356.1MB in the beginning and 388.2MB in the end (delta: -32.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.0GB. * TraceAbstraction took 90925.28ms. Allocated memory was 417.3MB in the beginning and 660.6MB in the end (delta: 243.3MB). Free memory was 387.6MB in the beginning and 599.8MB in the end (delta: -212.2MB). Peak memory consumption was 31.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 274]: Unsoundness Warning unspecified type, defaulting to int C: short [274] - GenericResultAtLocation [Line: 274]: Unsoundness Warning unspecified type, defaulting to int C: short [274] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 75 PlacesBefore, 19 PlacesAfterwards, 71 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 151, independent: 141, independent conditional: 0, independent unconditional: 141, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 88, independent: 84, independent conditional: 0, independent unconditional: 84, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 151, independent: 57, independent conditional: 0, independent unconditional: 57, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 88, unknown conditional: 0, unknown unconditional: 88] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 20]: 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 5 procedures, 107 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: 90.8s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 50.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 58 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 20.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 20.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 131 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 841 IncrementalHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 0 mSDtfsCounter, 841 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 107 ConstructedPredicates, 4 IntricatePredicates, 5 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 64.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 0.2s SatisfiabilityAnalysisTime, 36.7s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 24 QuantifiedInterpolants, 2464 SizeOfPredicates, 27 NumberOfNonLiveVariables, 612 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 9/78 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! [2023-08-27 02:44:13,341 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...