/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:36:38,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:36:38,892 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 05:36:38,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:36:38,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:36:38,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:36:38,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:36:38,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:36:38,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:36:38,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:36:38,931 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:36:38,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:36:38,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:36:38,932 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:36:38,932 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:36:38,932 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:36:38,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:36:38,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:36:38,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:36:38,933 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:36:38,933 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:36:38,933 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:36:38,934 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:36:38,934 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:36:38,934 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:36:38,934 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:36:38,935 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:36:38,935 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:36:38,935 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:36:38,935 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:36:38,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:36:38,936 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:36:38,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:36:38,936 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:36:38,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:36:38,937 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:36:39,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:36:39,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:36:39,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:36:39,231 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:36:39,232 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:36:39,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-08-24 05:36:40,194 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:36:40,419 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:36:40,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-08-24 05:36:40,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4cfd071/22e753ee4a574e6a9a69728ac7235980/FLAG5ecf79d10 [2023-08-24 05:36:40,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4cfd071/22e753ee4a574e6a9a69728ac7235980 [2023-08-24 05:36:40,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:36:40,450 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:36:40,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:36:40,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:36:40,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:36:40,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@316a50cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40, skipping insertion in model container [2023-08-24 05:36:40,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,493 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:36:40,612 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-wmm/safe024_tso.i[945,958] [2023-08-24 05:36:40,721 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:36:40,729 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:36:40,744 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-wmm/safe024_tso.i[945,958] [2023-08-24 05:36:40,753 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:36:40,754 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:36:40,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:36:40,800 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:36:40,801 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:36:40,805 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:36:40,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40 WrapperNode [2023-08-24 05:36:40,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:36:40,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:36:40,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:36:40,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:36:40,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,830 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-24 05:36:40,830 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:36:40,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:36:40,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:36:40,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:36:40,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,838 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,845 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:36:40,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:36:40,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:36:40,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:36:40,846 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (1/1) ... [2023-08-24 05:36:40,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:36:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:36:40,872 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 05:36:40,875 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 05:36:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:36:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:36:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:36:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:36:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:36:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:36:40,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:36:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:36:40,894 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:36:40,894 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:36:40,895 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:36:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:36:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:36:40,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:36:40,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:36:40,896 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 05:36:41,018 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:36:41,020 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:36:41,184 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:36:41,189 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:36:41,189 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:36:41,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:36:41 BoogieIcfgContainer [2023-08-24 05:36:41,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:36:41,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:36:41,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:36:41,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:36:41,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:36:40" (1/3) ... [2023-08-24 05:36:41,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbe0b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:36:41, skipping insertion in model container [2023-08-24 05:36:41,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:36:40" (2/3) ... [2023-08-24 05:36:41,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbe0b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:36:41, skipping insertion in model container [2023-08-24 05:36:41,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:36:41" (3/3) ... [2023-08-24 05:36:41,195 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2023-08-24 05:36:41,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:36:41,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:36:41,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:36:41,261 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:36:41,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 187 flow [2023-08-24 05:36:41,312 INFO L124 PetriNetUnfolderBase]: 2/83 cut-off events. [2023-08-24 05:36:41,313 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:41,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 05:36:41,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 86 transitions, 187 flow [2023-08-24 05:36:41,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 151 flow [2023-08-24 05:36:41,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:36:41,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-24 05:36:41,334 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 151 flow [2023-08-24 05:36:41,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 151 flow [2023-08-24 05:36:41,357 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-08-24 05:36:41,357 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:41,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 05:36:41,358 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 05:36:42,890 INFO L134 LiptonReduction]: Checked pairs total: 1960 [2023-08-24 05:36:42,891 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-08-24 05:36:42,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:36:42,903 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;@409914bf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:36:42,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 05:36:42,908 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:36:42,908 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 05:36:42,908 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:36:42,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:42,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:42,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:42,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1939323800, now seen corresponding path program 1 times [2023-08-24 05:36:42,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:42,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557821877] [2023-08-24 05:36:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:42,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:43,242 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 05:36:43,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:43,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557821877] [2023-08-24 05:36:43,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557821877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:43,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:43,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:36:43,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582996009] [2023-08-24 05:36:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:43,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:36:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:36:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:36:43,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-08-24 05:36:43,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:43,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:43,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-08-24 05:36:43,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:43,375 INFO L124 PetriNetUnfolderBase]: 289/462 cut-off events. [2023-08-24 05:36:43,375 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-24 05:36:43,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 961 conditions, 462 events. 289/462 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1774 event pairs, 85 based on Foata normal form. 6/466 useless extension candidates. Maximal degree in co-relation 950. Up to 407 conditions per place. [2023-08-24 05:36:43,381 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 23 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-08-24 05:36:43,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 121 flow [2023-08-24 05:36:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:36:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:36:43,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-24 05:36:43,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734265734265734 [2023-08-24 05:36:43,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-24 05:36:43,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-24 05:36:43,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:43,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-24 05:36:43,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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 05:36:43,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 05:36:43,400 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 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 05:36:43,401 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 246 transitions. [2023-08-24 05:36:43,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 121 flow [2023-08-24 05:36:43,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:36:43,404 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-08-24 05:36:43,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-24 05:36:43,407 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-08-24 05:36:43,407 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-08-24 05:36:43,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:36:43,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:43,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:43,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:36:43,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:43,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:43,408 INFO L85 PathProgramCache]: Analyzing trace with hash 10503732, now seen corresponding path program 1 times [2023-08-24 05:36:43,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:43,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054720840] [2023-08-24 05:36:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:43,491 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 05:36:43,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:43,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054720840] [2023-08-24 05:36:43,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054720840] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:43,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:43,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229670007] [2023-08-24 05:36:43,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:43,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:43,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:43,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:43,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-24 05:36:43,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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 05:36:43,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:43,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-24 05:36:43,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:43,553 INFO L124 PetriNetUnfolderBase]: 241/442 cut-off events. [2023-08-24 05:36:43,553 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2023-08-24 05:36:43,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 442 events. 241/442 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1979 event pairs, 83 based on Foata normal form. 40/481 useless extension candidates. Maximal degree in co-relation 944. Up to 138 conditions per place. [2023-08-24 05:36:43,555 INFO L140 encePairwiseOnDemand]: 139/143 looper letters, 21 selfloop transitions, 4 changer transitions 4/32 dead transitions. [2023-08-24 05:36:43,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 150 flow [2023-08-24 05:36:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:43,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-08-24 05:36:43,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5751748251748252 [2023-08-24 05:36:43,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-08-24 05:36:43,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-08-24 05:36:43,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:43,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-08-24 05:36:43,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 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 05:36:43,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:43,560 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:43,560 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 329 transitions. [2023-08-24 05:36:43,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 150 flow [2023-08-24 05:36:43,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:36:43,561 INFO L231 Difference]: Finished difference. Result has 31 places, 19 transitions, 73 flow [2023-08-24 05:36:43,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=73, PETRI_PLACES=31, PETRI_TRANSITIONS=19} [2023-08-24 05:36:43,562 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-08-24 05:36:43,562 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 73 flow [2023-08-24 05:36:43,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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 05:36:43,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:43,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:43,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:36:43,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:43,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:43,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1896609912, now seen corresponding path program 1 times [2023-08-24 05:36:43,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:43,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820259158] [2023-08-24 05:36:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:43,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:43,706 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 05:36:43,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:43,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820259158] [2023-08-24 05:36:43,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820259158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:43,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:43,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:36:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663120901] [2023-08-24 05:36:43,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:43,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:43,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:43,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:43,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:43,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-08-24 05:36:43,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 19 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 05:36:43,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:43,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-08-24 05:36:43,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:43,767 INFO L124 PetriNetUnfolderBase]: 119/232 cut-off events. [2023-08-24 05:36:43,767 INFO L125 PetriNetUnfolderBase]: For 200/203 co-relation queries the response was YES. [2023-08-24 05:36:43,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 232 events. 119/232 cut-off events. For 200/203 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 892 event pairs, 29 based on Foata normal form. 19/247 useless extension candidates. Maximal degree in co-relation 585. Up to 139 conditions per place. [2023-08-24 05:36:43,781 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 29 selfloop transitions, 7 changer transitions 5/45 dead transitions. [2023-08-24 05:36:43,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 241 flow [2023-08-24 05:36:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:36:43,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:36:43,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 404 transitions. [2023-08-24 05:36:43,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650349650349651 [2023-08-24 05:36:43,790 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 404 transitions. [2023-08-24 05:36:43,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 404 transitions. [2023-08-24 05:36:43,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:43,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 404 transitions. [2023-08-24 05:36:43,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 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 05:36:43,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 05:36:43,794 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 143.0) internal successors, (858), 6 states have internal predecessors, (858), 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 05:36:43,794 INFO L175 Difference]: Start difference. First operand has 31 places, 19 transitions, 73 flow. Second operand 5 states and 404 transitions. [2023-08-24 05:36:43,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 241 flow [2023-08-24 05:36:43,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:36:43,797 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 122 flow [2023-08-24 05:36:43,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-24 05:36:43,798 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-08-24 05:36:43,800 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 122 flow [2023-08-24 05:36:43,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 05:36:43,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:43,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:43,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:36:43,801 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:43,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1386944140, now seen corresponding path program 1 times [2023-08-24 05:36:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:43,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580442823] [2023-08-24 05:36:43,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:43,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:43,889 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 05:36:43,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:43,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580442823] [2023-08-24 05:36:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580442823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:43,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:43,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598991053] [2023-08-24 05:36:43,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:43,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:36:43,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:43,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:36:43,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:36:43,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-08-24 05:36:43,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 05:36:43,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:43,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-08-24 05:36:43,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:43,954 INFO L124 PetriNetUnfolderBase]: 98/208 cut-off events. [2023-08-24 05:36:43,954 INFO L125 PetriNetUnfolderBase]: For 356/387 co-relation queries the response was YES. [2023-08-24 05:36:43,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 208 events. 98/208 cut-off events. For 356/387 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 811 event pairs, 14 based on Foata normal form. 32/236 useless extension candidates. Maximal degree in co-relation 701. Up to 99 conditions per place. [2023-08-24 05:36:43,956 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 32 selfloop transitions, 13 changer transitions 8/57 dead transitions. [2023-08-24 05:36:43,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 57 transitions, 368 flow [2023-08-24 05:36:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:36:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:36:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 562 transitions. [2023-08-24 05:36:43,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614385614385614 [2023-08-24 05:36:43,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 562 transitions. [2023-08-24 05:36:43,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 562 transitions. [2023-08-24 05:36:43,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:43,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 562 transitions. [2023-08-24 05:36:43,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.28571428571429) internal successors, (562), 7 states have internal predecessors, (562), 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 05:36:43,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 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 05:36:43,961 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 143.0) internal successors, (1144), 8 states have internal predecessors, (1144), 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 05:36:43,961 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 122 flow. Second operand 7 states and 562 transitions. [2023-08-24 05:36:43,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 57 transitions, 368 flow [2023-08-24 05:36:43,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 57 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:36:43,965 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 206 flow [2023-08-24 05:36:43,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-08-24 05:36:43,966 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-08-24 05:36:43,966 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 206 flow [2023-08-24 05:36:43,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 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 05:36:43,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:43,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:36:43,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:36:43,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:43,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1415012507, now seen corresponding path program 1 times [2023-08-24 05:36:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:43,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302449251] [2023-08-24 05:36:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:43,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:44,059 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 05:36:44,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:44,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302449251] [2023-08-24 05:36:44,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302449251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:44,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:44,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:36:44,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055245149] [2023-08-24 05:36:44,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:44,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 05:36:44,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:44,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 05:36:44,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 05:36:44,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 143 [2023-08-24 05:36:44,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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 05:36:44,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:44,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 143 [2023-08-24 05:36:44,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:44,134 INFO L124 PetriNetUnfolderBase]: 84/187 cut-off events. [2023-08-24 05:36:44,134 INFO L125 PetriNetUnfolderBase]: For 510/542 co-relation queries the response was YES. [2023-08-24 05:36:44,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 187 events. 84/187 cut-off events. For 510/542 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 724 event pairs, 12 based on Foata normal form. 24/207 useless extension candidates. Maximal degree in co-relation 726. Up to 86 conditions per place. [2023-08-24 05:36:44,135 INFO L140 encePairwiseOnDemand]: 137/143 looper letters, 29 selfloop transitions, 17 changer transitions 7/57 dead transitions. [2023-08-24 05:36:44,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 426 flow [2023-08-24 05:36:44,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 05:36:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 05:36:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 708 transitions. [2023-08-24 05:36:44,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501165501165501 [2023-08-24 05:36:44,137 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 708 transitions. [2023-08-24 05:36:44,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 708 transitions. [2023-08-24 05:36:44,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:44,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 708 transitions. [2023-08-24 05:36:44,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 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 05:36:44,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 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 05:36:44,141 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 143.0) internal successors, (1430), 10 states have internal predecessors, (1430), 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 05:36:44,141 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 206 flow. Second operand 9 states and 708 transitions. [2023-08-24 05:36:44,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 426 flow [2023-08-24 05:36:44,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 396 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-24 05:36:44,146 INFO L231 Difference]: Finished difference. Result has 53 places, 32 transitions, 232 flow [2023-08-24 05:36:44,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=53, PETRI_TRANSITIONS=32} [2023-08-24 05:36:44,148 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-08-24 05:36:44,148 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 32 transitions, 232 flow [2023-08-24 05:36:44,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 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 05:36:44,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:44,149 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 05:36:44,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:36:44,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:44,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:44,149 INFO L85 PathProgramCache]: Analyzing trace with hash -961641232, now seen corresponding path program 1 times [2023-08-24 05:36:44,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:44,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108284095] [2023-08-24 05:36:44,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:44,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:44,232 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 05:36:44,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:44,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108284095] [2023-08-24 05:36:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108284095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:44,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787844617] [2023-08-24 05:36:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:44,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:44,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:44,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:44,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-24 05:36:44,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 32 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 05:36:44,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:44,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-24 05:36:44,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:44,287 INFO L124 PetriNetUnfolderBase]: 113/266 cut-off events. [2023-08-24 05:36:44,288 INFO L125 PetriNetUnfolderBase]: For 790/795 co-relation queries the response was YES. [2023-08-24 05:36:44,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 266 events. 113/266 cut-off events. For 790/795 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1229 event pairs, 20 based on Foata normal form. 2/267 useless extension candidates. Maximal degree in co-relation 1041. Up to 139 conditions per place. [2023-08-24 05:36:44,289 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 24 selfloop transitions, 1 changer transitions 40/67 dead transitions. [2023-08-24 05:36:44,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 633 flow [2023-08-24 05:36:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-08-24 05:36:44,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2023-08-24 05:36:44,290 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-08-24 05:36:44,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-08-24 05:36:44,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:44,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-08-24 05:36:44,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 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 05:36:44,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:44,292 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:44,292 INFO L175 Difference]: Start difference. First operand has 53 places, 32 transitions, 232 flow. Second operand 4 states and 330 transitions. [2023-08-24 05:36:44,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 633 flow [2023-08-24 05:36:44,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 67 transitions, 500 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-08-24 05:36:44,295 INFO L231 Difference]: Finished difference. Result has 49 places, 23 transitions, 123 flow [2023-08-24 05:36:44,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=49, PETRI_TRANSITIONS=23} [2023-08-24 05:36:44,295 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-08-24 05:36:44,296 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 23 transitions, 123 flow [2023-08-24 05:36:44,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 05:36:44,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:36:44,296 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 05:36:44,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:36:44,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:36:44,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:36:44,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1265547736, now seen corresponding path program 2 times [2023-08-24 05:36:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:36:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149918346] [2023-08-24 05:36:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:36:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:36:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:36:44,365 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 05:36:44,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:36:44,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149918346] [2023-08-24 05:36:44,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149918346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:36:44,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:36:44,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:36:44,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74773471] [2023-08-24 05:36:44,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:36:44,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:36:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:36:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:36:44,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:36:44,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 143 [2023-08-24 05:36:44,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 23 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 05:36:44,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:36:44,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 143 [2023-08-24 05:36:44,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:36:44,394 INFO L124 PetriNetUnfolderBase]: 37/91 cut-off events. [2023-08-24 05:36:44,394 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2023-08-24 05:36:44,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 91 events. 37/91 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 220 event pairs, 9 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 301. Up to 45 conditions per place. [2023-08-24 05:36:44,394 INFO L140 encePairwiseOnDemand]: 140/143 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-24 05:36:44,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 29 transitions, 194 flow [2023-08-24 05:36:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:36:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:36:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2023-08-24 05:36:44,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594405594405595 [2023-08-24 05:36:44,396 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 320 transitions. [2023-08-24 05:36:44,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 320 transitions. [2023-08-24 05:36:44,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:36:44,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 320 transitions. [2023-08-24 05:36:44,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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 05:36:44,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:44,397 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 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 05:36:44,397 INFO L175 Difference]: Start difference. First operand has 49 places, 23 transitions, 123 flow. Second operand 4 states and 320 transitions. [2023-08-24 05:36:44,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 29 transitions, 194 flow [2023-08-24 05:36:44,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 29 transitions, 186 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 05:36:44,398 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-24 05:36:44,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-24 05:36:44,399 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-08-24 05:36:44,399 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-24 05:36:44,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 05:36:44,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 05:36:44,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 05:36:44,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 05:36:44,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 05:36:44,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:36:44,401 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-24 05:36:44,403 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:36:44,403 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:36:44,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:36:44 BasicIcfg [2023-08-24 05:36:44,405 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:36:44,405 INFO L158 Benchmark]: Toolchain (without parser) took 3954.93ms. Allocated memory was 390.1MB in the beginning and 578.8MB in the end (delta: 188.7MB). Free memory was 364.7MB in the beginning and 358.3MB in the end (delta: 6.4MB). Peak memory consumption was 195.9MB. Max. memory is 16.0GB. [2023-08-24 05:36:44,405 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 390.1MB. Free memory was 368.0MB in the beginning and 367.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:36:44,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.17ms. Allocated memory is still 390.1MB. Free memory was 364.7MB in the beginning and 344.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 05:36:44,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.63ms. Allocated memory is still 390.1MB. Free memory was 344.5MB in the beginning and 342.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:36:44,406 INFO L158 Benchmark]: Boogie Preprocessor took 14.30ms. Allocated memory is still 390.1MB. Free memory was 342.4MB in the beginning and 340.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:36:44,406 INFO L158 Benchmark]: RCFGBuilder took 344.79ms. Allocated memory is still 390.1MB. Free memory was 340.9MB in the beginning and 327.0MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 05:36:44,406 INFO L158 Benchmark]: TraceAbstraction took 3213.22ms. Allocated memory was 390.1MB in the beginning and 578.8MB in the end (delta: 188.7MB). Free memory was 326.2MB in the beginning and 358.3MB in the end (delta: -32.1MB). Peak memory consumption was 158.1MB. Max. memory is 16.0GB. [2023-08-24 05:36:44,408 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 390.1MB. Free memory was 368.0MB in the beginning and 367.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 353.17ms. Allocated memory is still 390.1MB. Free memory was 364.7MB in the beginning and 344.5MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.63ms. Allocated memory is still 390.1MB. Free memory was 344.5MB in the beginning and 342.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.30ms. Allocated memory is still 390.1MB. Free memory was 342.4MB in the beginning and 340.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 344.79ms. Allocated memory is still 390.1MB. Free memory was 340.9MB in the beginning and 327.0MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3213.22ms. Allocated memory was 390.1MB in the beginning and 578.8MB in the end (delta: 188.7MB). Free memory was 326.2MB in the beginning and 358.3MB in the end (delta: -32.1MB). Peak memory consumption was 158.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 80 PlacesBefore, 27 PlacesAfterwards, 71 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 57 TotalNumberOfCompositions, 1960 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1093, independent: 1001, independent conditional: 0, independent unconditional: 1001, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 566, independent: 542, independent conditional: 0, independent unconditional: 542, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1093, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 566, unknown conditional: 0, unknown unconditional: 566] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 109 locations, 4 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: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 109 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 347 IncrementalHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 4 mSDtfsCounter, 347 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=5, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 301 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:36:44,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...