/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 PROGRAM_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_s.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:22:56,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:22:56,245 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 09:22:56,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:22:56,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:22:56,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:22:56,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:22:56,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:22:56,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:22:56,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:22:56,269 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:22:56,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:22:56,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:22:56,270 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:22:56,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:22:56,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:22:56,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:22:56,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:22:56,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:22:56,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:22:56,272 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:22:56,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:22:56,273 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:22:56,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:22:56,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:22:56,274 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:22:56,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:22:56,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:22:56,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:22:56,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:22:56,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:22:56,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:22:56,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:22:56,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:22:56,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:22:56,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:22:56,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:22:56,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:22:56,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:22:56,620 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:22:56,620 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:22:56,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s.i [2023-08-27 09:22:57,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:22:58,043 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:22:58,044 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s.i [2023-08-27 09:22:58,066 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23c48fd18/001fb7abbd154a7098cf275d2f22b4c7/FLAG92cd9383b [2023-08-27 09:22:58,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23c48fd18/001fb7abbd154a7098cf275d2f22b4c7 [2023-08-27 09:22:58,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:22:58,080 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:22:58,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:22:58,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:22:58,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:22:58,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a401660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58, skipping insertion in model container [2023-08-27 09:22:58,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,144 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:22:58,529 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:22:58,539 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:22:58,569 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-27 09:22:58,571 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [274] [2023-08-27 09:22:58,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:22:58,658 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:22:58,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58 WrapperNode [2023-08-27 09:22:58,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:22:58,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:22:58,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:22:58,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:22:58,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,716 INFO L138 Inliner]: procedures = 323, calls = 34, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2023-08-27 09:22:58,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:22:58,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:22:58,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:22:58,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:22:58,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:22:58,750 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:22:58,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:22:58,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:22:58,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (1/1) ... [2023-08-27 09:22:58,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:22:58,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:22:58,781 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 09:22:58,806 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 09:22:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:22:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:22:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-08-27 09:22:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:22:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 09:22:58,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 09:22:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 09:22:58,819 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 09:22:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:22:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 09:22:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:22:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:22:58,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:22:58,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:22:58,822 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 09:22:58,929 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:22:58,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:22:59,106 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:22:59,111 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:22:59,112 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-27 09:22:59,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:22:59 BoogieIcfgContainer [2023-08-27 09:22:59,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:22:59,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:22:59,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:22:59,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:22:59,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:22:58" (1/3) ... [2023-08-27 09:22:59,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3bd3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:22:59, skipping insertion in model container [2023-08-27 09:22:59,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:22:58" (2/3) ... [2023-08-27 09:22:59,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3bd3c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:22:59, skipping insertion in model container [2023-08-27 09:22:59,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:22:59" (3/3) ... [2023-08-27 09:22:59,125 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s.i [2023-08-27 09:22:59,139 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:22:59,140 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 09:22:59,140 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:22:59,220 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:22:59,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2023-08-27 09:22:59,312 INFO L124 PetriNetUnfolderBase]: 6/89 cut-off events. [2023-08-27 09:22:59,313 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:22:59,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-27 09:22:59,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 198 flow [2023-08-27 09:22:59,321 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 75 transitions, 162 flow [2023-08-27 09:22:59,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:22:59,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 75 transitions, 162 flow [2023-08-27 09:22:59,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 75 transitions, 162 flow [2023-08-27 09:22:59,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 75 transitions, 162 flow [2023-08-27 09:22:59,378 INFO L124 PetriNetUnfolderBase]: 4/75 cut-off events. [2023-08-27 09:22:59,378 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:22:59,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 4/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-08-27 09:22:59,381 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-08-27 09:23:02,103 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-08-27 09:23:02,103 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-08-27 09:23:02,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:23:02,120 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;@52939186, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:23:02,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 09:23:02,130 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:23:02,131 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-27 09:23:02,131 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:23:02,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:02,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:02,132 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 09:23:02,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:02,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1132119201, now seen corresponding path program 1 times [2023-08-27 09:23:02,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:02,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308210220] [2023-08-27 09:23:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:02,390 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 09:23:02,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:02,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308210220] [2023-08-27 09:23:02,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308210220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:23:02,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:23:02,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 09:23:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573322822] [2023-08-27 09:23:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:23:02,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:23:02,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:02,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:23:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:23:02,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 161 [2023-08-27 09:23:02,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 09:23:02,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:02,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 161 [2023-08-27 09:23:02,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:02,469 INFO L124 PetriNetUnfolderBase]: 5/20 cut-off events. [2023-08-27 09:23:02,469 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:23:02,470 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 09:23:02,471 INFO L140 encePairwiseOnDemand]: 159/161 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-27 09:23:02,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-08-27 09:23:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:23:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:23:02,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-27 09:23:02,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2023-08-27 09:23:02,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-27 09:23:02,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-27 09:23:02,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:02,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-27 09:23:02,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:23:02,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 09:23:02,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 09:23:02,500 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 243 transitions. [2023-08-27 09:23:02,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-08-27 09:23:02,502 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 09:23:02,503 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-08-27 09:23:02,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, 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 09:23:02,507 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-08-27 09:23:02,508 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-08-27 09:23:02,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 09:23:02,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:02,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:02,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:23:02,509 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 09:23:02,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash -745458153, now seen corresponding path program 1 times [2023-08-27 09:23:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92585476] [2023-08-27 09:23:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:02,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:02,973 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 09:23:02,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:02,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92585476] [2023-08-27 09:23:02,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92585476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:23:02,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:23:02,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 09:23:02,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847516984] [2023-08-27 09:23:02,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:23:02,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:23:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:02,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:23:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:23:02,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 161 [2023-08-27 09:23:02,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 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 09:23:02,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:02,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 161 [2023-08-27 09:23:02,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:03,039 INFO L124 PetriNetUnfolderBase]: 9/28 cut-off events. [2023-08-27 09:23:03,040 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:23:03,040 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, 2 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 09:23:03,041 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 13 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-08-27 09:23:03,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 18 transitions, 78 flow [2023-08-27 09:23:03,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 09:23:03,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 09:23:03,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 239 transitions. [2023-08-27 09:23:03,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37111801242236025 [2023-08-27 09:23:03,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 239 transitions. [2023-08-27 09:23:03,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 239 transitions. [2023-08-27 09:23:03,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:03,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 239 transitions. [2023-08-27 09:23:03,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 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 09:23:03,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 09:23:03,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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 09:23:03,052 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 4 states and 239 transitions. [2023-08-27 09:23:03,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 18 transitions, 78 flow [2023-08-27 09:23:03,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 77 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:23:03,053 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 60 flow [2023-08-27 09:23:03,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, 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=4, PETRI_FLOW=60, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-08-27 09:23:03,054 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-08-27 09:23:03,055 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 60 flow [2023-08-27 09:23:03,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 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 09:23:03,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:03,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:03,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:23:03,059 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 09:23:03,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1634900462, now seen corresponding path program 1 times [2023-08-27 09:23:03,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:03,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968166617] [2023-08-27 09:23:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:03,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:03,472 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 09:23:03,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:03,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968166617] [2023-08-27 09:23:03,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968166617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:23:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459572720] [2023-08-27 09:23:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:03,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:23:03,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:23:03,509 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 09:23:03,512 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 09:23:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:03,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-27 09:23:03,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:23:03,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:23:03,667 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 09:23:03,686 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-27 09:23:03,686 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 09:23:03,754 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 09:23:03,840 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-27 09:23:03,840 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 09:23:03,881 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 09:23:03,882 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 09:23:03,912 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 09:23:03,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:23:04,060 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 09:23:04,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459572720] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:23:04,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:23:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-08-27 09:23:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692914500] [2023-08-27 09:23:04,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:23:04,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 09:23:04,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:04,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 09:23:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-08-27 09:23:04,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 161 [2023-08-27 09:23:04,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 60 flow. Second operand has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 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 09:23:04,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:04,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 161 [2023-08-27 09:23:04,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:04,440 INFO L124 PetriNetUnfolderBase]: 14/45 cut-off events. [2023-08-27 09:23:04,440 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 09:23:04,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 68 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 115. Up to 14 conditions per place. [2023-08-27 09:23:04,441 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-08-27 09:23:04,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 165 flow [2023-08-27 09:23:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:23:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:23:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 429 transitions. [2023-08-27 09:23:04,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29606625258799174 [2023-08-27 09:23:04,443 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 429 transitions. [2023-08-27 09:23:04,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 429 transitions. [2023-08-27 09:23:04,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:04,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 429 transitions. [2023-08-27 09:23:04,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 47.666666666666664) internal successors, (429), 9 states have internal predecessors, (429), 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 09:23:04,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 09:23:04,447 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 09:23:04,447 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 60 flow. Second operand 9 states and 429 transitions. [2023-08-27 09:23:04,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 165 flow [2023-08-27 09:23:04,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 163 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-27 09:23:04,449 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 104 flow [2023-08-27 09:23:04,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=53, 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=104, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-08-27 09:23:04,450 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-08-27 09:23:04,450 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 104 flow [2023-08-27 09:23:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 46.0) internal successors, (828), 18 states have internal predecessors, (828), 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 09:23:04,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:04,451 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:04,463 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 09:23:04,657 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 09:23:04,657 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 09:23:04,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:04,658 INFO L85 PathProgramCache]: Analyzing trace with hash -920986409, now seen corresponding path program 2 times [2023-08-27 09:23:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:04,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347552450] [2023-08-27 09:23:04,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:05,161 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 09:23:05,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347552450] [2023-08-27 09:23:05,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347552450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:23:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746567557] [2023-08-27 09:23:05,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 09:23:05,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:23:05,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:23:05,163 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 09:23:05,165 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 09:23:05,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 09:23:05,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:23:05,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-27 09:23:05,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:23:05,301 INFO L322 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-08-27 09:23:05,302 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 29 treesize of output 37 [2023-08-27 09:23:05,308 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 09:23:05,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:23:05,400 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-27 09:23:05,401 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2023-08-27 09:23:05,432 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 09:23:05,495 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 09:23:05,530 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 09:23:05,566 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 09:23:05,605 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 09:23:05,637 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 09:23:05,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:23:05,664 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-08-27 09:23:05,706 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-08-27 09:23:05,711 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_113 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_113) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-08-27 09:23:05,850 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 09:23:05,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746567557] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:23:05,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:23:05,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-08-27 09:23:05,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450344927] [2023-08-27 09:23:05,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:23:05,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-27 09:23:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-27 09:23:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=486, Unknown=7, NotChecked=138, Total=702 [2023-08-27 09:23:05,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 161 [2023-08-27 09:23:05,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 104 flow. Second operand has 27 states, 27 states have (on average 44.629629629629626) internal successors, (1205), 27 states have internal predecessors, (1205), 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 09:23:05,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:05,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 161 [2023-08-27 09:23:05,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:23:06,447 INFO L124 PetriNetUnfolderBase]: 14/44 cut-off events. [2023-08-27 09:23:06,448 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 09:23:06,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 44 events. 14/44 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 1 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 158. Up to 14 conditions per place. [2023-08-27 09:23:06,448 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 18 selfloop transitions, 9 changer transitions 2/29 dead transitions. [2023-08-27 09:23:06,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 29 transitions, 196 flow [2023-08-27 09:23:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:23:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:23:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 417 transitions. [2023-08-27 09:23:06,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28778467908902694 [2023-08-27 09:23:06,451 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 417 transitions. [2023-08-27 09:23:06,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 417 transitions. [2023-08-27 09:23:06,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:23:06,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 417 transitions. [2023-08-27 09:23:06,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 46.333333333333336) internal successors, (417), 9 states have internal predecessors, (417), 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 09:23:06,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 09:23:06,454 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 09:23:06,454 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 104 flow. Second operand 9 states and 417 transitions. [2023-08-27 09:23:06,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 29 transitions, 196 flow [2023-08-27 09:23:06,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 168 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-27 09:23:06,456 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 108 flow [2023-08-27 09:23:06,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2023-08-27 09:23:06,457 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 17 predicate places. [2023-08-27 09:23:06,457 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 108 flow [2023-08-27 09:23:06,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 44.629629629629626) internal successors, (1205), 27 states have internal predecessors, (1205), 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 09:23:06,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:23:06,458 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:23:06,466 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 09:23:06,658 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 09:23:06,659 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 09:23:06,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:23:06,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1513658194, now seen corresponding path program 3 times [2023-08-27 09:23:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:23:06,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035291638] [2023-08-27 09:23:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:23:06,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:23:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:23:07,200 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 09:23:07,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:23:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035291638] [2023-08-27 09:23:07,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035291638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 09:23:07,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979120041] [2023-08-27 09:23:07,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 09:23:07,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 09:23:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:23:07,202 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 09:23:07,222 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 09:23:07,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-27 09:23:07,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 09:23:07,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-27 09:23:07,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 09:23:07,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:23:07,320 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 09:23:07,332 INFO L322 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-27 09:23:07,332 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 09:23:07,389 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 09:23:07,475 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-27 09:23:07,478 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 09:23:07,535 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 09:23:07,536 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 09:23:07,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:23:07,588 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 09:23:07,589 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 09:23:07,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:23:07,644 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 09:23:07,645 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 09:23:07,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:23:07,702 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 09:23:07,702 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 09:23:07,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-27 09:23:07,751 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-27 09:23:07,752 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 09:23:07,783 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 09:23:07,783 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 09:23:20,393 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 Int) (v_ArrVal_174 Int) (v_ArrVal_172 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_56| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_57| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_58| Int) (v_ArrVal_170 Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_56| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_57| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_57| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#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~offset14#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_168) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_58| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_170) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_57| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_172) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_56| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_174)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1_58| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset14#1| 1)))) is different from false [2023-08-27 09:23:54,513 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 09:23:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979120041] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 09:23:54,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 09:23:54,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 29 [2023-08-27 09:23:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640999393] [2023-08-27 09:23:54,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 09:23:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-27 09:23:54,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:23:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-27 09:23:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=670, Unknown=21, NotChecked=54, Total=870 [2023-08-27 09:23:54,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 161 [2023-08-27 09:23:54,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 108 flow. Second operand has 30 states, 30 states have (on average 44.6) internal successors, (1338), 30 states have internal predecessors, (1338), 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 09:23:54,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:23:54,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 161 [2023-08-27 09:23:54,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:24:06,377 WARN L234 SmtUtils]: Spent 11.55s on a formula simplification. DAG size of input: 74 DAG size of output: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-27 09:24:22,283 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2023-08-27 09:24:22,283 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-08-27 09:24:22,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 42 events. 12/42 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 1 based on Foata normal form. 3/45 useless extension candidates. Maximal degree in co-relation 133. Up to 10 conditions per place. [2023-08-27 09:24:22,284 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-27 09:24:22,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 28 transitions, 182 flow [2023-08-27 09:24:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 09:24:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 09:24:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 503 transitions. [2023-08-27 09:24:22,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28402032749858835 [2023-08-27 09:24:22,288 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 503 transitions. [2023-08-27 09:24:22,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 503 transitions. [2023-08-27 09:24:22,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:24:22,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 503 transitions. [2023-08-27 09:24:22,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 45.72727272727273) internal successors, (503), 11 states have internal predecessors, (503), 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 09:24:22,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 161.0) internal successors, (1932), 12 states have internal predecessors, (1932), 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 09:24:22,292 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 161.0) internal successors, (1932), 12 states have internal predecessors, (1932), 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 09:24:22,292 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 108 flow. Second operand 11 states and 503 transitions. [2023-08-27 09:24:22,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 28 transitions, 182 flow [2023-08-27 09:24:22,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 159 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-27 09:24:22,294 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-27 09:24:22,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-27 09:24:22,295 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 18 predicate places. [2023-08-27 09:24:22,295 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-27 09:24:22,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 44.6) internal successors, (1338), 30 states have internal predecessors, (1338), 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 09:24:22,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2023-08-27 09:24:22,298 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 09:24:22,299 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 09:24:22,307 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 09:24:22,504 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 09:24:22,505 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-27 09:24:22,507 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:24:22,507 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:24:22,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:24:22 BasicIcfg [2023-08-27 09:24:22,510 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:24:22,510 INFO L158 Benchmark]: Toolchain (without parser) took 84430.52ms. Allocated memory was 377.5MB in the beginning and 583.0MB in the end (delta: 205.5MB). Free memory was 350.7MB in the beginning and 524.3MB in the end (delta: -173.6MB). Peak memory consumption was 33.3MB. Max. memory is 16.0GB. [2023-08-27 09:24:22,510 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 377.5MB. Free memory was 354.9MB in the beginning and 354.8MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:24:22,511 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.43ms. Allocated memory is still 377.5MB. Free memory was 350.1MB in the beginning and 317.9MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-08-27 09:24:22,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.48ms. Allocated memory is still 377.5MB. Free memory was 317.9MB in the beginning and 315.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:24:22,511 INFO L158 Benchmark]: Boogie Preprocessor took 32.70ms. Allocated memory is still 377.5MB. Free memory was 315.2MB in the beginning and 313.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:24:22,511 INFO L158 Benchmark]: RCFGBuilder took 363.48ms. Allocated memory is still 377.5MB. Free memory was 313.8MB in the beginning and 299.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 09:24:22,512 INFO L158 Benchmark]: TraceAbstraction took 83394.49ms. Allocated memory was 377.5MB in the beginning and 583.0MB in the end (delta: 205.5MB). Free memory was 298.6MB in the beginning and 524.3MB in the end (delta: -225.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:24:22,513 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 377.5MB. Free memory was 354.9MB in the beginning and 354.8MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 579.43ms. Allocated memory is still 377.5MB. Free memory was 350.1MB in the beginning and 317.9MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.48ms. Allocated memory is still 377.5MB. Free memory was 317.9MB in the beginning and 315.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.70ms. Allocated memory is still 377.5MB. Free memory was 315.2MB in the beginning and 313.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 363.48ms. Allocated memory is still 377.5MB. Free memory was 313.8MB in the beginning and 299.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 83394.49ms. Allocated memory was 377.5MB in the beginning and 583.0MB in the end (delta: 205.5MB). Free memory was 298.6MB in the beginning and 524.3MB in the end (delta: -225.7MB). There was no memory consumed. 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: 2.8s, 78 PlacesBefore, 19 PlacesAfterwards, 75 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 143, independent: 133, independent conditional: 0, independent unconditional: 133, 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: 85, independent: 80, independent conditional: 0, independent unconditional: 80, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 143, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 85, unknown conditional: 0, unknown unconditional: 85] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, 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, 111 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: 83.3s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 31 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 105 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 104 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 716 IncrementalHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 104 mSolverCounterUnsat, 0 mSDtfsCounter, 716 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 70.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, InterpolantAutomatonStates: 36, 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, 50.2s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 150 ConstructedInterpolants, 26 QuantifiedInterpolants, 2439 SizeOfPredicates, 26 NumberOfNonLiveVariables, 621 ConjunctsInSsa, 130 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 09:24:22,577 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...