/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 -i ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:29:06,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:29:06,206 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 [2023-08-24 11:29:06,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:29:06,209 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:29:06,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:29:06,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:29:06,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:29:06,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:29:06,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:29:06,240 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:29:06,240 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:29:06,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:29:06,241 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:29:06,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:29:06,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:29:06,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:29:06,242 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:29:06,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:29:06,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:29:06,242 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:29:06,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:29:06,243 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:29:06,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:29:06,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:29:06,244 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:29:06,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:29:06,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:29:06,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:29:06,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:29:06,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:29:06,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:29:06,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:29:06,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:29:06,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:29:06,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:29:06,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:29:06,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:29:06,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:29:06,492 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:29:06,493 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:29:06,494 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-24 11:29:07,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:29:07,723 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:29:07,724 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-24 11:29:07,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed53bc663/18c08e95302e474a9787859d2a119ba1/FLAG0fb0ee84b [2023-08-24 11:29:07,740 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed53bc663/18c08e95302e474a9787859d2a119ba1 [2023-08-24 11:29:07,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:29:07,743 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:29:07,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:29:07,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:29:07,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:29:07,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:29:07" (1/1) ... [2023-08-24 11:29:07,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee03c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:07, skipping insertion in model container [2023-08-24 11:29:07,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:29:07" (1/1) ... [2023-08-24 11:29:07,778 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:29:08,015 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2023-08-24 11:29:08,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:29:08,027 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:29:08,050 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-24 11:29:08,052 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-24 11:29:08,066 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2023-08-24 11:29:08,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:29:08,099 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:29:08,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08 WrapperNode [2023-08-24 11:29:08,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:29:08,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:29:08,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:29:08,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:29:08,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,128 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,149 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2023-08-24 11:29:08,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:29:08,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:29:08,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:29:08,151 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:29:08,156 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:29:08,182 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:29:08,182 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:29:08,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:29:08,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (1/1) ... [2023-08-24 11:29:08,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:29:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:29:08,224 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) [2023-08-24 11:29:08,263 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 [2023-08-24 11:29:08,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 11:29:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 11:29:08,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 11:29:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:29:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:29:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:29:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:29:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:29:08,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:29:08,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:29:08,287 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:29:08,373 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:29:08,374 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:29:08,532 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:29:08,583 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:29:08,583 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 11:29:08,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:29:08 BoogieIcfgContainer [2023-08-24 11:29:08,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:29:08,586 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:29:08,586 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:29:08,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:29:08,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:29:07" (1/3) ... [2023-08-24 11:29:08,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d92676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:29:08, skipping insertion in model container [2023-08-24 11:29:08,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:29:08" (2/3) ... [2023-08-24 11:29:08,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d92676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:29:08, skipping insertion in model container [2023-08-24 11:29:08,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:29:08" (3/3) ... [2023-08-24 11:29:08,590 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-08-24 11:29:08,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:29:08,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:29:08,602 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:29:08,635 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:29:08,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 91 transitions, 187 flow [2023-08-24 11:29:08,703 INFO L124 PetriNetUnfolderBase]: 10/101 cut-off events. [2023-08-24 11:29:08,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:29:08,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 10/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-24 11:29:08,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 91 transitions, 187 flow [2023-08-24 11:29:08,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 91 transitions, 187 flow [2023-08-24 11:29:08,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:29:08,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 91 transitions, 187 flow [2023-08-24 11:29:08,738 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 91 transitions, 187 flow [2023-08-24 11:29:08,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 91 transitions, 187 flow [2023-08-24 11:29:08,768 INFO L124 PetriNetUnfolderBase]: 10/101 cut-off events. [2023-08-24 11:29:08,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:29:08,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 10/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-24 11:29:08,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 1612 [2023-08-24 11:29:10,134 INFO L134 LiptonReduction]: Checked pairs total: 2202 [2023-08-24 11:29:10,134 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-24 11:29:10,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:29:10,149 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;@5e29d216, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:29:10,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 11:29:10,153 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:29:10,153 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-08-24 11:29:10,153 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:29:10,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:29:10,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:29:10,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 11:29:10,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:29:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash -210271656, now seen corresponding path program 1 times [2023-08-24 11:29:10,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:29:10,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29629849] [2023-08-24 11:29:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:29:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:29:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:29:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:29:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:29:10,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29629849] [2023-08-24 11:29:10,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29629849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:29:10,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:29:10,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:29:10,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98503592] [2023-08-24 11:29:10,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:29:10,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 11:29:10,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:29:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 11:29:10,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 11:29:10,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 171 [2023-08-24 11:29:10,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 28 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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) [2023-08-24 11:29:10,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:29:10,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 171 [2023-08-24 11:29:10,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:29:10,400 INFO L124 PetriNetUnfolderBase]: 34/84 cut-off events. [2023-08-24 11:29:10,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:29:10,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 84 events. 34/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 25 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 151. Up to 78 conditions per place. [2023-08-24 11:29:10,402 INFO L140 encePairwiseOnDemand]: 167/171 looper letters, 19 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-24 11:29:10,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 23 transitions, 89 flow [2023-08-24 11:29:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 11:29:10,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 11:29:10,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 181 transitions. [2023-08-24 11:29:10,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292397660818714 [2023-08-24 11:29:10,415 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 181 transitions. [2023-08-24 11:29:10,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 181 transitions. [2023-08-24 11:29:10,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:29:10,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 181 transitions. [2023-08-24 11:29:10,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2023-08-24 11:29:10,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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) [2023-08-24 11:29:10,428 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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) [2023-08-24 11:29:10,429 INFO L175 Difference]: Start difference. First operand has 26 places, 28 transitions, 61 flow. Second operand 2 states and 181 transitions. [2023-08-24 11:29:10,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 23 transitions, 89 flow [2023-08-24 11:29:10,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 89 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:29:10,432 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 51 flow [2023-08-24 11:29:10,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=51, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2023-08-24 11:29:10,435 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -2 predicate places. [2023-08-24 11:29:10,436 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 51 flow [2023-08-24 11:29:10,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 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) [2023-08-24 11:29:10,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:29:10,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:29:10,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:29:10,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 11:29:10,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:29:10,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1467023127, now seen corresponding path program 1 times [2023-08-24 11:29:10,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:29:10,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66760585] [2023-08-24 11:29:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:29:10,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:29:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:29:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:29:10,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:29:10,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66760585] [2023-08-24 11:29:10,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66760585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:29:10,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:29:10,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 11:29:10,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681028245] [2023-08-24 11:29:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:29:10,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 11:29:10,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:29:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 11:29:10,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-08-24 11:29:10,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 171 [2023-08-24 11:29:10,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 51 flow. Second operand has 11 states, 11 states have (on average 49.45454545454545) internal successors, (544), 11 states have internal predecessors, (544), 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) [2023-08-24 11:29:10,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:29:10,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 171 [2023-08-24 11:29:10,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:29:11,258 INFO L124 PetriNetUnfolderBase]: 74/184 cut-off events. [2023-08-24 11:29:11,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:29:11,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 184 events. 74/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 424 event pairs, 2 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 369. Up to 87 conditions per place. [2023-08-24 11:29:11,261 INFO L140 encePairwiseOnDemand]: 157/171 looper letters, 40 selfloop transitions, 26 changer transitions 0/68 dead transitions. [2023-08-24 11:29:11,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 68 transitions, 273 flow [2023-08-24 11:29:11,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 11:29:11,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 11:29:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 740 transitions. [2023-08-24 11:29:11,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3091060985797828 [2023-08-24 11:29:11,266 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 740 transitions. [2023-08-24 11:29:11,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 740 transitions. [2023-08-24 11:29:11,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:29:11,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 740 transitions. [2023-08-24 11:29:11,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 52.857142857142854) internal successors, (740), 14 states have internal predecessors, (740), 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) [2023-08-24 11:29:11,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 171.0) internal successors, (2565), 15 states have internal predecessors, (2565), 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) [2023-08-24 11:29:11,274 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 171.0) internal successors, (2565), 15 states have internal predecessors, (2565), 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) [2023-08-24 11:29:11,274 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 51 flow. Second operand 14 states and 740 transitions. [2023-08-24 11:29:11,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 68 transitions, 273 flow [2023-08-24 11:29:11,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 68 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:29:11,276 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 219 flow [2023-08-24 11:29:11,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=219, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2023-08-24 11:29:11,276 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2023-08-24 11:29:11,276 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 219 flow [2023-08-24 11:29:11,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 49.45454545454545) internal successors, (544), 11 states have internal predecessors, (544), 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) [2023-08-24 11:29:11,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:29:11,277 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:29:11,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:29:11,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 11:29:11,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:29:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -361356833, now seen corresponding path program 1 times [2023-08-24 11:29:11,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:29:11,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136120451] [2023-08-24 11:29:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:29:11,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:29:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:29:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:29:11,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:29:11,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136120451] [2023-08-24 11:29:11,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136120451] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:29:11,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651842371] [2023-08-24 11:29:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:29:11,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:29:11,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:29:11,793 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) [2023-08-24 11:29:11,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 11:29:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:29:11,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-24 11:29:11,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:29:11,929 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 11:29:11,984 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 11:29:11,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-24 11:29:12,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 11:29:12,123 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 [2023-08-24 11:29:12,329 INFO L322 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-08-24 11:29:12,329 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 2 case distinctions, treesize of input 35 treesize of output 25 [2023-08-24 11:29:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:29:12,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:29:12,661 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7| Int) (v_ArrVal_90 (Array Int Int))) (not (= 0 (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_90))) (store .cse1 |c_~#top~0.base| (store (select .cse1 |c_~#top~0.base|) |c_~#top~0.offset| (select (select .cse1 |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|)))))) (store .cse0 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7| (store (select .cse0 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_7|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_~#top~0.base|) |c_~#top~0.offset|)))) is different from false [2023-08-24 11:29:12,701 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 11:29:12,701 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-24 11:29:12,711 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 11:29:12,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-24 11:29:12,806 INFO L322 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2023-08-24 11:29:12,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 5 case distinctions, treesize of input 1183 treesize of output 1146 [2023-08-24 11:29:12,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 357 treesize of output 341 [2023-08-24 11:29:12,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-24 11:29:12,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-08-24 11:29:12,940 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 11:29:12,941 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 810 treesize of output 774 [2023-08-24 11:29:12,957 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 277 [2023-08-24 11:29:13,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-08-24 11:29:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-24 11:29:13,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651842371] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:29:13,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:29:13,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 27 [2023-08-24 11:29:13,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027868102] [2023-08-24 11:29:13,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:29:13,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 11:29:13,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:29:13,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 11:29:13,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=653, Unknown=2, NotChecked=52, Total=812 [2023-08-24 11:29:13,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 171 [2023-08-24 11:29:13,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 219 flow. Second operand has 29 states, 29 states have (on average 39.724137931034484) internal successors, (1152), 29 states have internal predecessors, (1152), 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) [2023-08-24 11:29:13,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:29:13,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 171 [2023-08-24 11:29:13,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:29:14,070 INFO L124 PetriNetUnfolderBase]: 97/268 cut-off events. [2023-08-24 11:29:14,071 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-08-24 11:29:14,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 268 events. 97/268 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 867 event pairs, 0 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 751. Up to 82 conditions per place. [2023-08-24 11:29:14,072 INFO L140 encePairwiseOnDemand]: 156/171 looper letters, 63 selfloop transitions, 49 changer transitions 0/114 dead transitions. [2023-08-24 11:29:14,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 651 flow [2023-08-24 11:29:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 11:29:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 11:29:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 782 transitions. [2023-08-24 11:29:14,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2540610786224821 [2023-08-24 11:29:14,075 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 782 transitions. [2023-08-24 11:29:14,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 782 transitions. [2023-08-24 11:29:14,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:29:14,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 782 transitions. [2023-08-24 11:29:14,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 43.44444444444444) internal successors, (782), 18 states have internal predecessors, (782), 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) [2023-08-24 11:29:14,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 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) [2023-08-24 11:29:14,080 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 171.0) internal successors, (3249), 19 states have internal predecessors, (3249), 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) [2023-08-24 11:29:14,080 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 219 flow. Second operand 18 states and 782 transitions. [2023-08-24 11:29:14,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 651 flow [2023-08-24 11:29:14,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 114 transitions, 651 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:29:14,084 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 543 flow [2023-08-24 11:29:14,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=543, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2023-08-24 11:29:14,084 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2023-08-24 11:29:14,085 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 543 flow [2023-08-24 11:29:14,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 39.724137931034484) internal successors, (1152), 29 states have internal predecessors, (1152), 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) [2023-08-24 11:29:14,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:29:14,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:29:14,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 11:29:14,289 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 [2023-08-24 11:29:14,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 11:29:14,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:29:14,290 INFO L85 PathProgramCache]: Analyzing trace with hash -600021821, now seen corresponding path program 2 times [2023-08-24 11:29:14,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:29:14,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76512509] [2023-08-24 11:29:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:29:14,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:29:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:29:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:29:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:29:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76512509] [2023-08-24 11:29:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76512509] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:29:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938837468] [2023-08-24 11:29:14,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 11:29:14,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:29:14,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:29:14,677 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) [2023-08-24 11:29:14,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 11:29:14,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 11:29:14,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:29:14,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-24 11:29:14,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:29:14,754 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 11:29:14,754 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-24 11:29:14,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 11:29:14,996 INFO L322 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-08-24 11:29:14,996 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 2 case distinctions, treesize of input 35 treesize of output 25 [2023-08-24 11:29:15,040 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 [2023-08-24 11:29:15,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:29:15,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:29:15,084 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_160 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) is different from false [2023-08-24 11:29:15,110 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse0 (= |c_thr1Thread1of1ForFork0_push_~oldTop~0#1| (select .cse2 |c_~#top~0.offset|)))) (and (or (not .cse0) (forall ((v_ArrVal_160 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= 0 (select (select (store (let ((.cse1 (store |c_#memory_int| |c_~#top~0.base| (store .cse2 |c_~#top~0.offset| |c_thr1Thread1of1ForFork0_push_#t~mem8#1|)))) (store .cse1 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| (store (select .cse1 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|))))) (or (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_153 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (store |c_#memory_int| |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| v_ArrVal_153) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) .cse0)))) is different from false [2023-08-24 11:29:15,120 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse0 (= |c_thr1Thread1of1ForFork0_push_~oldTop~0#1| (select .cse2 |c_~#top~0.offset|)))) (and (or (not .cse0) (forall ((v_ArrVal_160 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (let ((.cse1 (store |c_#memory_int| |c_~#top~0.base| (store .cse2 |c_~#top~0.offset| (select (select |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|))))) (store .cse1 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| (store (select .cse1 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0)))) (or (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_153 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (store |c_#memory_int| |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| v_ArrVal_153) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) .cse0)))) is different from false [2023-08-24 11:29:15,129 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_~#top~0.base|))) (let ((.cse2 (= |c_thr1Thread1of1ForFork0_push_#t~mem6#1| (select .cse1 |c_~#top~0.offset|)))) (and (or (forall ((v_ArrVal_160 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (let ((.cse0 (store |c_#memory_int| |c_~#top~0.base| (store .cse1 |c_~#top~0.offset| (select (select |c_#memory_int| |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.base|) |c_thr1Thread1of1ForFork0_push_~#newTop~0#1.offset|))))) (store .cse0 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| (store (select .cse0 |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9|) |c_thr1Thread1of1ForFork0_push_~#ret~0#1.offset| 1))) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) (not .cse2)) (or (forall ((v_ArrVal_160 (Array Int Int)) (v_ArrVal_153 (Array Int Int)) (|v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| Int)) (not (= (select (select (store (store |c_#memory_int| |v_thr1Thread1of1ForFork0___VERIFIER_atomic_CAS_~r#1.base_9| v_ArrVal_153) |c_ULTIMATE.start_main_~#t~0#1.base| v_ArrVal_160) |c_~#top~0.base|) |c_~#top~0.offset|) 0))) .cse2)))) is different from false [2023-08-24 11:29:15,169 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 11:29:15,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 52 [2023-08-24 11:29:15,177 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 11:29:15,178 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 8 [2023-08-24 11:29:15,231 INFO L322 Elim1Store]: treesize reduction 27, result has 60.9 percent of original size [2023-08-24 11:29:15,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 127 [2023-08-24 11:29:15,302 INFO L322 Elim1Store]: treesize reduction 74, result has 46.0 percent of original size [2023-08-24 11:29:15,302 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 108 treesize of output 163 [2023-08-24 11:29:15,338 INFO L322 Elim1Store]: treesize reduction 40, result has 38.5 percent of original size [2023-08-24 11:29:15,338 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 case distinctions, treesize of input 132 treesize of output 129 [2023-08-24 11:29:15,347 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 72 [2023-08-24 11:29:15,574 INFO L322 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-08-24 11:29:15,574 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 166 [2023-08-24 11:29:15,635 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 11:29:15,637 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-08-24 11:29:15,654 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 11:29:15,655 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-08-24 11:29:15,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 164 [2023-08-24 11:29:15,923 INFO L322 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-08-24 11:29:15,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 166 treesize of output 166 [2023-08-24 11:29:16,024 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 11:29:16,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-08-24 11:29:16,488 INFO L160 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 11:29:16,489 INFO L165 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2023-08-24 11:29:16,512 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 11:29:16,513 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 70 [2023-08-24 11:29:16,562 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 11:29:16,562 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-08-24 11:29:16,577 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 11:29:16,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 8 treesize of output 4 [2023-08-24 11:29:16,589 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-08-24 11:29:16,602 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 11:29:16,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 70 [2023-08-24 11:32:16,056 WARN L234 SmtUtils]: Spent 2.99m on a formula simplification. DAG size of input: 961 DAG size of output: 220 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-24 11:32:16,057 INFO L322 Elim1Store]: treesize reduction 1653, result has 18.4 percent of original size [2023-08-24 11:32:16,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 25 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 45 new quantified variables, introduced 211 case distinctions, treesize of input 1824 treesize of output 1416 [2023-08-24 11:32:16,208 INFO L217 Elim1Store]: Index analysis took 114 ms Received shutdown request... [2023-08-24 11:43:55,201 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 11:43:55,202 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 11:43:55,416 WARN L266 SmtUtils]: Removed 3 from assertion stack [2023-08-24 11:43:55,418 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-24 11:43:55,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 11:43:55,618 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 [2023-08-24 11:43:55,619 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12678 for 699154ms.. [2023-08-24 11:43:55,620 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-24 11:43:55,620 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-24 11:43:55,621 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT (1/2) [2023-08-24 11:43:55,623 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:43:55,623 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:43:55,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:43:55 BasicIcfg [2023-08-24 11:43:55,625 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:43:55,625 INFO L158 Benchmark]: Toolchain (without parser) took 887882.52ms. Allocated memory was 392.2MB in the beginning and 572.5MB in the end (delta: 180.4MB). Free memory was 367.7MB in the beginning and 483.4MB in the end (delta: -115.7MB). Peak memory consumption was 349.2MB. Max. memory is 16.0GB. [2023-08-24 11:43:55,625 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 392.2MB. Free memory is still 368.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:43:55,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.79ms. Allocated memory is still 392.2MB. Free memory was 367.3MB in the beginning and 347.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:43:55,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.93ms. Allocated memory is still 392.2MB. Free memory was 347.9MB in the beginning and 345.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:43:55,626 INFO L158 Benchmark]: Boogie Preprocessor took 31.23ms. Allocated memory is still 392.2MB. Free memory was 345.9MB in the beginning and 344.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:43:55,626 INFO L158 Benchmark]: RCFGBuilder took 402.57ms. Allocated memory is still 392.2MB. Free memory was 344.2MB in the beginning and 365.0MB in the end (delta: -20.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.0GB. [2023-08-24 11:43:55,626 INFO L158 Benchmark]: TraceAbstraction took 887038.65ms. Allocated memory was 392.2MB in the beginning and 572.5MB in the end (delta: 180.4MB). Free memory was 364.1MB in the beginning and 483.4MB in the end (delta: -119.2MB). Peak memory consumption was 344.0MB. Max. memory is 16.0GB. [2023-08-24 11:43:55,627 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 392.2MB. Free memory is still 368.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 356.79ms. Allocated memory is still 392.2MB. Free memory was 367.3MB in the beginning and 347.9MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.93ms. Allocated memory is still 392.2MB. Free memory was 347.9MB in the beginning and 345.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.23ms. Allocated memory is still 392.2MB. Free memory was 345.9MB in the beginning and 344.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 402.57ms. Allocated memory is still 392.2MB. Free memory was 344.2MB in the beginning and 365.0MB in the end (delta: -20.8MB). Peak memory consumption was 19.9MB. Max. memory is 16.0GB. * TraceAbstraction took 887038.65ms. Allocated memory was 392.2MB in the beginning and 572.5MB in the end (delta: 180.4MB). Free memory was 364.1MB in the beginning and 483.4MB in the end (delta: -119.2MB). Peak memory consumption was 344.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] - GenericResultAtLocation [Line: 253]: Unsoundness Warning unspecified type, defaulting to int C: short [253] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 85 PlacesBefore, 26 PlacesAfterwards, 91 TransitionsBefore, 28 TransitionsAfterwards, 1612 CoEnabledTransitionPairs, 5 FixpointIterations, 14 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 80 TotalNumberOfCompositions, 2202 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1663, independent: 1508, independent conditional: 0, independent unconditional: 1508, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 874, independent: 831, independent conditional: 0, independent unconditional: 831, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1663, independent: 677, independent conditional: 0, independent unconditional: 677, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 874, unknown conditional: 0, unknown unconditional: 874] , Statistics on independence cache: Total cache size (in pairs): 56, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 725]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 20 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12678 for 699154ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 138 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: 887.0s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 141 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 93 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1180 IncrementalHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 3 mSDtfsCounter, 1180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=543occurred in iteration=3, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 79 ConstructedInterpolants, 12 QuantifiedInterpolants, 1315 SizeOfPredicates, 22 NumberOfNonLiveVariables, 182 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown