/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-atomic/peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 09:38:36,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 09:38:36,108 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 09:38:36,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 09:38:36,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 09:38:36,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 09:38:36,147 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 09:38:36,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 09:38:36,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 09:38:36,155 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 09:38:36,155 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 09:38:36,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 09:38:36,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 09:38:36,157 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 09:38:36,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 09:38:36,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 09:38:36,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 09:38:36,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 09:38:36,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 09:38:36,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 09:38:36,158 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 09:38:36,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 09:38:36,159 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 09:38:36,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 09:38:36,160 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 09:38:36,160 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 09:38:36,161 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 09:38:36,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:38:36,161 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 09:38:36,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 09:38:36,162 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 09:38:36,162 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 09:38:36,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 09:38:36,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 09:38:36,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 09:38:36,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 09:38:36,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 09:38:36,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 09:38:36,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 09:38:36,547 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 09:38:36,548 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 09:38:36,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2023-08-27 09:38:37,773 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 09:38:38,072 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 09:38:38,073 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2023-08-27 09:38:38,085 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0797376fb/dbe5435f698243da9921ca953ac5af83/FLAG5df245529 [2023-08-27 09:38:38,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0797376fb/dbe5435f698243da9921ca953ac5af83 [2023-08-27 09:38:38,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 09:38:38,105 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 09:38:38,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 09:38:38,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 09:38:38,110 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 09:38:38,111 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,112 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b0e22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38, skipping insertion in model container [2023-08-27 09:38:38,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,165 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 09:38:38,335 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 09:38:38,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:38:38,461 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 09:38:38,487 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-27 09:38:38,493 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-27 09:38:38,494 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [265] [2023-08-27 09:38:38,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 09:38:38,552 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:38:38,552 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:38:38,552 WARN L669 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 09:38:38,558 INFO L206 MainTranslator]: Completed translation [2023-08-27 09:38:38,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38 WrapperNode [2023-08-27 09:38:38,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 09:38:38,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 09:38:38,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 09:38:38,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 09:38:38,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,592 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,616 INFO L138 Inliner]: procedures = 171, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2023-08-27 09:38:38,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 09:38:38,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 09:38:38,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 09:38:38,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 09:38:38,623 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,641 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 09:38:38,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 09:38:38,644 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 09:38:38,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 09:38:38,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (1/1) ... [2023-08-27 09:38:38,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 09:38:38,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 09:38:38,677 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 09:38:38,679 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 09:38:38,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 09:38:38,701 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-27 09:38:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-27 09:38:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-27 09:38:38,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-27 09:38:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 09:38:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 09:38:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 09:38:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 09:38:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 09:38:38,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 09:38:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 09:38:38,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 09:38:38,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 09:38:38,706 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 09:38:38,820 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 09:38:38,822 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 09:38:39,002 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 09:38:39,008 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 09:38:39,008 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 09:38:39,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:39 BoogieIcfgContainer [2023-08-27 09:38:39,010 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 09:38:39,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 09:38:39,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 09:38:39,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 09:38:39,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:38:38" (1/3) ... [2023-08-27 09:38:39,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40289e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:39, skipping insertion in model container [2023-08-27 09:38:39,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:38:38" (2/3) ... [2023-08-27 09:38:39,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40289e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:38:39, skipping insertion in model container [2023-08-27 09:38:39,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:38:39" (3/3) ... [2023-08-27 09:38:39,021 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2023-08-27 09:38:39,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 09:38:39,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-27 09:38:39,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 09:38:39,121 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 09:38:39,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 88 transitions, 192 flow [2023-08-27 09:38:39,211 INFO L124 PetriNetUnfolderBase]: 8/86 cut-off events. [2023-08-27 09:38:39,212 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 09:38:39,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 86 events. 8/86 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-27 09:38:39,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 88 transitions, 192 flow [2023-08-27 09:38:39,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 77 transitions, 163 flow [2023-08-27 09:38:39,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 09:38:39,232 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 77 transitions, 163 flow [2023-08-27 09:38:39,234 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 77 transitions, 163 flow [2023-08-27 09:38:39,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 77 transitions, 163 flow [2023-08-27 09:38:39,250 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2023-08-27 09:38:39,250 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 09:38:39,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 77 events. 8/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 111 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-08-27 09:38:39,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 1748 [2023-08-27 09:38:40,726 INFO L134 LiptonReduction]: Checked pairs total: 5074 [2023-08-27 09:38:40,726 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-27 09:38:40,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 09:38:40,752 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;@285ccb06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 09:38:40,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-27 09:38:40,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 09:38:40,766 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2023-08-27 09:38:40,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 09:38:40,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:38:40,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:38:40,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-27 09:38:40,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:38:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash 707989917, now seen corresponding path program 1 times [2023-08-27 09:38:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:38:40,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367437054] [2023-08-27 09:38:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:38:40,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:38:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:38:41,014 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 09:38:41,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:38:41,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367437054] [2023-08-27 09:38:41,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367437054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:38:41,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:38:41,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:38:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636258162] [2023-08-27 09:38:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:38:41,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:38:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:38:41,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:38:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:38:41,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 149 [2023-08-27 09:38:41,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:38:41,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:38:41,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 149 [2023-08-27 09:38:41,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:41,187 INFO L124 PetriNetUnfolderBase]: 168/342 cut-off events. [2023-08-27 09:38:41,187 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-27 09:38:41,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 342 events. 168/342 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1562 event pairs, 75 based on Foata normal form. 8/274 useless extension candidates. Maximal degree in co-relation 596. Up to 166 conditions per place. [2023-08-27 09:38:41,191 INFO L140 encePairwiseOnDemand]: 139/149 looper letters, 26 selfloop transitions, 3 changer transitions 1/38 dead transitions. [2023-08-27 09:38:41,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 148 flow [2023-08-27 09:38:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:38:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:38:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-27 09:38:41,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615212527964206 [2023-08-27 09:38:41,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-27 09:38:41,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-27 09:38:41,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:38:41,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-27 09:38:41,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 09:38:41,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:38:41,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:38:41,214 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 79 flow. Second operand 3 states and 251 transitions. [2023-08-27 09:38:41,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 148 flow [2023-08-27 09:38:41,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 09:38:41,218 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 82 flow [2023-08-27 09:38:41,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-27 09:38:41,223 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-27 09:38:41,223 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 82 flow [2023-08-27 09:38:41,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:38:41,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:38:41,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:38:41,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 09:38:41,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-27 09:38:41,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:38:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash -602696068, now seen corresponding path program 1 times [2023-08-27 09:38:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:38:41,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145188541] [2023-08-27 09:38:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:38:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:38:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:38:41,301 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 09:38:41,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:38:41,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145188541] [2023-08-27 09:38:41,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145188541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:38:41,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:38:41,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 09:38:41,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850714660] [2023-08-27 09:38:41,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:38:41,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 09:38:41,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:38:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 09:38:41,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 09:38:41,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 149 [2023-08-27 09:38:41,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 09:38:41,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:38:41,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 149 [2023-08-27 09:38:41,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:41,383 INFO L124 PetriNetUnfolderBase]: 138/294 cut-off events. [2023-08-27 09:38:41,383 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-08-27 09:38:41,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 294 events. 138/294 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1320 event pairs, 77 based on Foata normal form. 24/288 useless extension candidates. Maximal degree in co-relation 272. Up to 165 conditions per place. [2023-08-27 09:38:41,386 INFO L140 encePairwiseOnDemand]: 145/149 looper letters, 21 selfloop transitions, 2 changer transitions 5/36 dead transitions. [2023-08-27 09:38:41,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 153 flow [2023-08-27 09:38:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 09:38:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 09:38:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-27 09:38:41,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436241610738255 [2023-08-27 09:38:41,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-27 09:38:41,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-27 09:38:41,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:38:41,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-27 09:38:41,390 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 09:38:41,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:38:41,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 149.0) internal successors, (596), 4 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 09:38:41,392 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 82 flow. Second operand 3 states and 243 transitions. [2023-08-27 09:38:41,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 153 flow [2023-08-27 09:38:41,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 09:38:41,410 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 82 flow [2023-08-27 09:38:41,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-27 09:38:41,411 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-08-27 09:38:41,412 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 82 flow [2023-08-27 09:38:41,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 09:38:41,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:38:41,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:38:41,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 09:38:41,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-27 09:38:41,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:38:41,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1340457359, now seen corresponding path program 1 times [2023-08-27 09:38:41,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:38:41,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868881137] [2023-08-27 09:38:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:38:41,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:38:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:38:41,566 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 09:38:41,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:38:41,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868881137] [2023-08-27 09:38:41,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868881137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:38:41,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:38:41,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 09:38:41,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127991747] [2023-08-27 09:38:41,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:38:41,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:38:41,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:38:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:38:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:38:41,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 149 [2023-08-27 09:38:41,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 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 09:38:41,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:38:41,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 149 [2023-08-27 09:38:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:41,788 INFO L124 PetriNetUnfolderBase]: 339/646 cut-off events. [2023-08-27 09:38:41,789 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2023-08-27 09:38:41,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 646 events. 339/646 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3005 event pairs, 55 based on Foata normal form. 28/672 useless extension candidates. Maximal degree in co-relation 1174. Up to 262 conditions per place. [2023-08-27 09:38:41,796 INFO L140 encePairwiseOnDemand]: 140/149 looper letters, 44 selfloop transitions, 10 changer transitions 31/88 dead transitions. [2023-08-27 09:38:41,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 88 transitions, 392 flow [2023-08-27 09:38:41,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 09:38:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 09:38:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2023-08-27 09:38:41,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885906040268456 [2023-08-27 09:38:41,801 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 728 transitions. [2023-08-27 09:38:41,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 728 transitions. [2023-08-27 09:38:41,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:38:41,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 728 transitions. [2023-08-27 09:38:41,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.8) internal successors, (728), 10 states have internal predecessors, (728), 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 09:38:41,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 149.0) internal successors, (1639), 11 states have internal predecessors, (1639), 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 09:38:41,808 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 149.0) internal successors, (1639), 11 states have internal predecessors, (1639), 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 09:38:41,808 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 82 flow. Second operand 10 states and 728 transitions. [2023-08-27 09:38:41,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 88 transitions, 392 flow [2023-08-27 09:38:41,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 88 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 09:38:41,813 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 166 flow [2023-08-27 09:38:41,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=166, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-27 09:38:41,814 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-08-27 09:38:41,814 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 166 flow [2023-08-27 09:38:41,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 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 09:38:41,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 09:38:41,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 09:38:41,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 09:38:41,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONASSERT === [thr2Err0ASSERT_VIOLATIONASSERT, thr1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-27 09:38:41,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 09:38:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1049369207, now seen corresponding path program 2 times [2023-08-27 09:38:41,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 09:38:41,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442276011] [2023-08-27 09:38:41,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 09:38:41,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 09:38:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 09:38:41,947 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 09:38:41,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 09:38:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442276011] [2023-08-27 09:38:41,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442276011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 09:38:41,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 09:38:41,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 09:38:41,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496596509] [2023-08-27 09:38:41,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 09:38:41,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 09:38:41,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 09:38:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 09:38:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 09:38:41,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 149 [2023-08-27 09:38:41,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 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 09:38:41,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 09:38:41,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 149 [2023-08-27 09:38:41,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 09:38:42,124 INFO L124 PetriNetUnfolderBase]: 295/554 cut-off events. [2023-08-27 09:38:42,124 INFO L125 PetriNetUnfolderBase]: For 694/696 co-relation queries the response was YES. [2023-08-27 09:38:42,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 554 events. 295/554 cut-off events. For 694/696 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2358 event pairs, 36 based on Foata normal form. 24/576 useless extension candidates. Maximal degree in co-relation 1160. Up to 211 conditions per place. [2023-08-27 09:38:42,126 INFO L140 encePairwiseOnDemand]: 140/149 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2023-08-27 09:38:42,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 89 transitions, 579 flow [2023-08-27 09:38:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 09:38:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 09:38:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 649 transitions. [2023-08-27 09:38:42,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48396718866517524 [2023-08-27 09:38:42,129 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 649 transitions. [2023-08-27 09:38:42,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 649 transitions. [2023-08-27 09:38:42,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 09:38:42,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 649 transitions. [2023-08-27 09:38:42,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.11111111111111) internal successors, (649), 9 states have internal predecessors, (649), 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 09:38:42,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 149.0) internal successors, (1490), 10 states have internal predecessors, (1490), 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 09:38:42,134 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 149.0) internal successors, (1490), 10 states have internal predecessors, (1490), 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 09:38:42,134 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 166 flow. Second operand 9 states and 649 transitions. [2023-08-27 09:38:42,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 89 transitions, 579 flow [2023-08-27 09:38:42,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 517 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-08-27 09:38:42,140 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-27 09:38:42,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=149, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-27 09:38:42,141 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-08-27 09:38:42,141 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-27 09:38:42,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.33333333333333) internal successors, (398), 6 states have internal predecessors, (398), 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 09:38:42,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2023-08-27 09:38:42,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2023-08-27 09:38:42,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-27 09:38:42,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-27 09:38:42,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2023-08-27 09:38:42,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2023-08-27 09:38:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 09:38:42,146 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-27 09:38:42,149 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:38:42,149 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:38:42,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:38:42 BasicIcfg [2023-08-27 09:38:42,152 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:38:42,153 INFO L158 Benchmark]: Toolchain (without parser) took 4047.71ms. Allocated memory was 388.0MB in the beginning and 539.0MB in the end (delta: 151.0MB). Free memory was 362.3MB in the beginning and 418.3MB in the end (delta: -55.9MB). Peak memory consumption was 97.2MB. Max. memory is 16.0GB. [2023-08-27 09:38:42,153 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 388.0MB. Free memory was 365.4MB in the beginning and 365.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:38:42,153 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.89ms. Allocated memory is still 388.0MB. Free memory was 362.3MB in the beginning and 342.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 09:38:42,154 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.33ms. Allocated memory is still 388.0MB. Free memory was 342.5MB in the beginning and 340.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:38:42,154 INFO L158 Benchmark]: Boogie Preprocessor took 26.94ms. Allocated memory is still 388.0MB. Free memory was 340.4MB in the beginning and 338.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:38:42,154 INFO L158 Benchmark]: RCFGBuilder took 366.21ms. Allocated memory is still 388.0MB. Free memory was 338.8MB in the beginning and 324.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 09:38:42,155 INFO L158 Benchmark]: TraceAbstraction took 3139.50ms. Allocated memory was 388.0MB in the beginning and 539.0MB in the end (delta: 151.0MB). Free memory was 324.1MB in the beginning and 418.3MB in the end (delta: -94.2MB). Peak memory consumption was 59.4MB. Max. memory is 16.0GB. [2023-08-27 09:38:42,156 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 388.0MB. Free memory was 365.4MB in the beginning and 365.2MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 451.89ms. Allocated memory is still 388.0MB. Free memory was 362.3MB in the beginning and 342.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 56.33ms. Allocated memory is still 388.0MB. Free memory was 342.5MB in the beginning and 340.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.94ms. Allocated memory is still 388.0MB. Free memory was 340.4MB in the beginning and 338.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 366.21ms. Allocated memory is still 388.0MB. Free memory was 338.8MB in the beginning and 324.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3139.50ms. Allocated memory was 388.0MB in the beginning and 539.0MB in the end (delta: 151.0MB). Free memory was 324.1MB in the beginning and 418.3MB in the end (delta: -94.2MB). Peak memory consumption was 59.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] - GenericResultAtLocation [Line: 265]: Unsoundness Warning unspecified type, defaulting to int C: short [265] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 76 PlacesBefore, 36 PlacesAfterwards, 77 TransitionsBefore, 35 TransitionsAfterwards, 1748 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 5074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2600, independent: 2405, independent conditional: 0, independent unconditional: 2405, dependent: 195, dependent conditional: 0, dependent unconditional: 195, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1051, independent: 1011, independent conditional: 0, independent unconditional: 1011, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2600, independent: 1394, independent conditional: 0, independent unconditional: 1394, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 1051, unknown conditional: 0, unknown unconditional: 1051] , Statistics on independence cache: Total cache size (in pairs): 193, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 12]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 12]: 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, 123 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 120 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 514 IncrementalHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 31 mSDtfsCounter, 514 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 09:38:42,176 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...