/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:02:29,803 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:02:29,865 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-NoLbe.epf [2023-11-10 12:02:29,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:02:29,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:02:29,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:02:29,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:02:29,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:02:29,894 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:02:29,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:02:29,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:02:29,895 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:02:29,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:02:29,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:02:29,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:02:29,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:02:29,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:02:29,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:02:29,896 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:02:29,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:02:29,897 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:02:29,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:02:29,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:02:29,902 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:02:29,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:02:29,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:02:29,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:02:29,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:02:29,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:02:29,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:02:29,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:02:29,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:02:29,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:02:29,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:02:30,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:02:30,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:02:30,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:02:30,123 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:02:30,123 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:02:30,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-10 12:02:31,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:02:31,421 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:02:31,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-11-10 12:02:31,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6902e158a/f910e80a502143989e1a55c1b78526bb/FLAG9f3b1adf4 [2023-11-10 12:02:31,448 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6902e158a/f910e80a502143989e1a55c1b78526bb [2023-11-10 12:02:31,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:02:31,451 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:02:31,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:02:31,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:02:31,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:02:31,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:02:31" (1/1) ... [2023-11-10 12:02:31,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fa4d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:31, skipping insertion in model container [2023-11-10 12:02:31,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:02:31" (1/1) ... [2023-11-10 12:02:31,512 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:02:31,825 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2023-11-10 12:02:31,861 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:02:31,918 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:02:31,950 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2023-11-10 12:02:31,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:02:32,007 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:02:32,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32 WrapperNode [2023-11-10 12:02:32,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:02:32,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:02:32,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:02:32,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:02:32,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,079 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 236 [2023-11-10 12:02:32,080 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:02:32,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:02:32,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:02:32,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:02:32,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,115 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:02:32,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:02:32,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:02:32,116 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:02:32,117 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (1/1) ... [2023-11-10 12:02:32,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:02:32,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:02:32,158 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) [2023-11-10 12:02:32,181 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 [2023-11-10 12:02:32,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:02:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-10 12:02:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-10 12:02:32,192 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-10 12:02:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:02:32,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:02:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-10 12:02:32,193 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-10 12:02:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:02:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-10 12:02:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-10 12:02:32,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:02:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-10 12:02:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:02:32,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:02:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:02:32,195 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:02:32,358 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:02:32,359 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:02:32,649 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:02:32,660 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:02:32,660 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-10 12:02:32,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:02:32 BoogieIcfgContainer [2023-11-10 12:02:32,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:02:32,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:02:32,669 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:02:32,671 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:02:32,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:02:31" (1/3) ... [2023-11-10 12:02:32,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a55b8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:02:32, skipping insertion in model container [2023-11-10 12:02:32,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:02:32" (2/3) ... [2023-11-10 12:02:32,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a55b8c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:02:32, skipping insertion in model container [2023-11-10 12:02:32,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:02:32" (3/3) ... [2023-11-10 12:02:32,673 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-11-10 12:02:32,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:02:32,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:02:32,688 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:02:32,775 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-10 12:02:32,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 247 transitions, 514 flow [2023-11-10 12:02:32,961 INFO L124 PetriNetUnfolderBase]: 54/466 cut-off events. [2023-11-10 12:02:32,962 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-10 12:02:32,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 466 events. 54/466 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1889 event pairs, 0 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 236. Up to 8 conditions per place. [2023-11-10 12:02:32,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 247 transitions, 514 flow [2023-11-10 12:02:32,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 245 transitions, 504 flow [2023-11-10 12:02:33,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:02:33,012 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=LoopHeads, 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;@305999df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:02:33,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-10 12:02:33,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:02:33,029 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-11-10 12:02:33,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 12:02:33,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:02:33,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:02:33,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:02:33,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:02:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1836278945, now seen corresponding path program 1 times [2023-11-10 12:02:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:02:33,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709692407] [2023-11-10 12:02:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:02:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:02:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-10 12:02:33,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:02:33,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709692407] [2023-11-10 12:02:33,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709692407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:02:33,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:02:33,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 12:02:33,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962634263] [2023-11-10 12:02:33,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:02:33,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 12:02:33,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:02:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 12:02:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 12:02:33,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 247 [2023-11-10 12:02:33,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 245 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:33,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:02:33,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 247 [2023-11-10 12:02:33,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:02:33,551 INFO L124 PetriNetUnfolderBase]: 11/428 cut-off events. [2023-11-10 12:02:33,551 INFO L125 PetriNetUnfolderBase]: For 17/25 co-relation queries the response was YES. [2023-11-10 12:02:33,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 428 events. 11/428 cut-off events. For 17/25 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1551 event pairs, 0 based on Foata normal form. 51/454 useless extension candidates. Maximal degree in co-relation 235. Up to 21 conditions per place. [2023-11-10 12:02:33,556 INFO L140 encePairwiseOnDemand]: 227/247 looper letters, 17 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2023-11-10 12:02:33,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 232 transitions, 516 flow [2023-11-10 12:02:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 12:02:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 12:02:33,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 677 transitions. [2023-11-10 12:02:33,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9136302294197031 [2023-11-10 12:02:33,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 677 transitions. [2023-11-10 12:02:33,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 677 transitions. [2023-11-10 12:02:33,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:02:33,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 677 transitions. [2023-11-10 12:02:33,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 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) [2023-11-10 12:02:33,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-11-10 12:02:33,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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) [2023-11-10 12:02:33,592 INFO L175 Difference]: Start difference. First operand has 227 places, 245 transitions, 504 flow. Second operand 3 states and 677 transitions. [2023-11-10 12:02:33,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 232 transitions, 516 flow [2023-11-10 12:02:33,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 232 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-10 12:02:33,602 INFO L231 Difference]: Finished difference. Result has 229 places, 228 transitions, 480 flow [2023-11-10 12:02:33,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=229, PETRI_TRANSITIONS=228} [2023-11-10 12:02:33,607 INFO L281 CegarLoopForPetriNet]: 227 programPoint places, 2 predicate places. [2023-11-10 12:02:33,608 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 228 transitions, 480 flow [2023-11-10 12:02:33,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:02:33,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:02:33,609 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:02:33,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:02:33,610 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:02:33,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:02:33,610 INFO L85 PathProgramCache]: Analyzing trace with hash -972188892, now seen corresponding path program 1 times [2023-11-10 12:02:33,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:02:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671109083] [2023-11-10 12:02:33,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:33,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:02:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:02:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-10 12:02:33,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:02:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671109083] [2023-11-10 12:02:33,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671109083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:02:33,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836511086] [2023-11-10 12:02:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:33,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:02:33,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:02:33,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:02:33,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:02:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:02:33,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-10 12:02:33,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:02:34,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-10 12:02:34,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:02:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-10 12:02:34,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836511086] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:02:34,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:02:34,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-10 12:02:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539905819] [2023-11-10 12:02:34,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:02:34,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:02:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:02:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:02:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:02:34,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 247 [2023-11-10 12:02:34,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 228 transitions, 480 flow. Second operand has 10 states, 10 states have (on average 214.5) internal successors, (2145), 10 states have internal predecessors, (2145), 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) [2023-11-10 12:02:34,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:02:34,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 247 [2023-11-10 12:02:34,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:02:34,247 INFO L124 PetriNetUnfolderBase]: 11/446 cut-off events. [2023-11-10 12:02:34,247 INFO L125 PetriNetUnfolderBase]: For 17/25 co-relation queries the response was YES. [2023-11-10 12:02:34,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 446 events. 11/446 cut-off events. For 17/25 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1486 event pairs, 0 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 442. Up to 17 conditions per place. [2023-11-10 12:02:34,251 INFO L140 encePairwiseOnDemand]: 241/247 looper letters, 19 selfloop transitions, 9 changer transitions 0/240 dead transitions. [2023-11-10 12:02:34,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 240 transitions, 562 flow [2023-11-10 12:02:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:02:34,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:02:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1938 transitions. [2023-11-10 12:02:34,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8717948717948718 [2023-11-10 12:02:34,256 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1938 transitions. [2023-11-10 12:02:34,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1938 transitions. [2023-11-10 12:02:34,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:02:34,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1938 transitions. [2023-11-10 12:02:34,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 215.33333333333334) internal successors, (1938), 9 states have internal predecessors, (1938), 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) [2023-11-10 12:02:34,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 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) [2023-11-10 12:02:34,264 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 247.0) internal successors, (2470), 10 states have internal predecessors, (2470), 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) [2023-11-10 12:02:34,264 INFO L175 Difference]: Start difference. First operand has 229 places, 228 transitions, 480 flow. Second operand 9 states and 1938 transitions. [2023-11-10 12:02:34,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 240 transitions, 562 flow [2023-11-10 12:02:34,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 240 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-10 12:02:34,269 INFO L231 Difference]: Finished difference. Result has 239 places, 234 transitions, 528 flow [2023-11-10 12:02:34,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=528, PETRI_PLACES=239, PETRI_TRANSITIONS=234} [2023-11-10 12:02:34,270 INFO L281 CegarLoopForPetriNet]: 227 programPoint places, 12 predicate places. [2023-11-10 12:02:34,270 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 234 transitions, 528 flow [2023-11-10 12:02:34,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.5) internal successors, (2145), 10 states have internal predecessors, (2145), 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) [2023-11-10 12:02:34,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:02:34,271 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:02:34,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:02:34,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:02:34,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:02:34,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:02:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash 289390122, now seen corresponding path program 2 times [2023-11-10 12:02:34,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:02:34,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594905117] [2023-11-10 12:02:34,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:34,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:02:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:02:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-10 12:02:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:02:34,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594905117] [2023-11-10 12:02:34,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594905117] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:02:34,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426015519] [2023-11-10 12:02:34,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:02:34,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:02:34,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:02:34,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:02:34,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-10 12:02:34,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:02:34,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:02:34,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-10 12:02:34,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:02:34,979 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-10 12:02:34,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:02:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-10 12:02:35,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426015519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:02:35,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:02:35,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-10 12:02:35,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59485317] [2023-11-10 12:02:35,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:02:35,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-10 12:02:35,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:02:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-10 12:02:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-10 12:02:35,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 247 [2023-11-10 12:02:35,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 234 transitions, 528 flow. Second operand has 18 states, 18 states have (on average 214.72222222222223) internal successors, (3865), 18 states have internal predecessors, (3865), 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) [2023-11-10 12:02:35,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:02:35,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 247 [2023-11-10 12:02:35,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:02:35,304 INFO L124 PetriNetUnfolderBase]: 11/510 cut-off events. [2023-11-10 12:02:35,305 INFO L125 PetriNetUnfolderBase]: For 37/45 co-relation queries the response was YES. [2023-11-10 12:02:35,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 510 events. 11/510 cut-off events. For 37/45 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1483 event pairs, 0 based on Foata normal form. 4/490 useless extension candidates. Maximal degree in co-relation 403. Up to 17 conditions per place. [2023-11-10 12:02:35,308 INFO L140 encePairwiseOnDemand]: 241/247 looper letters, 31 selfloop transitions, 21 changer transitions 0/264 dead transitions. [2023-11-10 12:02:35,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 264 transitions, 752 flow [2023-11-10 12:02:35,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-10 12:02:35,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-10 12:02:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4508 transitions. [2023-11-10 12:02:35,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8690958164642375 [2023-11-10 12:02:35,316 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4508 transitions. [2023-11-10 12:02:35,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4508 transitions. [2023-11-10 12:02:35,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:02:35,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4508 transitions. [2023-11-10 12:02:35,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 214.66666666666666) internal successors, (4508), 21 states have internal predecessors, (4508), 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) [2023-11-10 12:02:35,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 247.0) internal successors, (5434), 22 states have internal predecessors, (5434), 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) [2023-11-10 12:02:35,332 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 247.0) internal successors, (5434), 22 states have internal predecessors, (5434), 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) [2023-11-10 12:02:35,332 INFO L175 Difference]: Start difference. First operand has 239 places, 234 transitions, 528 flow. Second operand 21 states and 4508 transitions. [2023-11-10 12:02:35,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 264 transitions, 752 flow [2023-11-10 12:02:35,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 264 transitions, 738 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-10 12:02:35,338 INFO L231 Difference]: Finished difference. Result has 263 places, 247 transitions, 652 flow [2023-11-10 12:02:35,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=652, PETRI_PLACES=263, PETRI_TRANSITIONS=247} [2023-11-10 12:02:35,339 INFO L281 CegarLoopForPetriNet]: 227 programPoint places, 36 predicate places. [2023-11-10 12:02:35,340 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 247 transitions, 652 flow [2023-11-10 12:02:35,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 214.72222222222223) internal successors, (3865), 18 states have internal predecessors, (3865), 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) [2023-11-10 12:02:35,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:02:35,342 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:02:35,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-10 12:02:35,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-10 12:02:35,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 12:02:35,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:02:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash -85242826, now seen corresponding path program 3 times [2023-11-10 12:02:35,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:02:35,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049489416] [2023-11-10 12:02:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:02:35,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:02:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:02:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-10 12:02:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:02:36,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049489416] [2023-11-10 12:02:36,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049489416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:02:36,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826445396] [2023-11-10 12:02:36,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:02:36,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:02:36,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:02:36,010 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:02:36,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Received shutdown request... [2023-11-10 12:12:20,329 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-10 12:12:20,329 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-10 12:12:21,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-11-10 12:12:21,530 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forcibly destroying the process [2023-11-10 12:12:21,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 137 [2023-11-10 12:12:21,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-10 12:12:21,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:12:21,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-10 12:12:21,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467336169] [2023-11-10 12:12:21,551 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-10 12:12:21,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-10 12:12:21,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:12:21,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-10 12:12:21,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-10 12:12:21,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 247 [2023-11-10 12:12:21,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 247 transitions, 652 flow. Second operand has 17 states, 17 states have (on average 214.76470588235293) internal successors, (3651), 17 states have internal predecessors, (3651), 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) [2023-11-10 12:12:21,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:12:21,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 247 [2023-11-10 12:12:21,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:12:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-10 12:12:21,572 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-10 12:12:21,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:12:21,573 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 212/247 universal loopers) in iteration 4,while PetriNetUnfolder was constructing finite prefix that currently has 14 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). [2023-11-10 12:12:21,574 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-10 12:12:21,574 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-10 12:12:21,574 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-10 12:12:21,574 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-11-10 12:12:21,578 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 12:12:21,578 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 12:12:21,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:12:21 BasicIcfg [2023-11-10 12:12:21,583 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 12:12:21,584 INFO L158 Benchmark]: Toolchain (without parser) took 590132.54ms. Allocated memory was 198.2MB in the beginning and 275.8MB in the end (delta: 77.6MB). Free memory was 150.7MB in the beginning and 238.8MB in the end (delta: -88.1MB). Peak memory consumption was 146.6MB. Max. memory is 8.0GB. [2023-11-10 12:12:21,586 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 198.2MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 12:12:21,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.22ms. Allocated memory is still 198.2MB. Free memory was 150.7MB in the beginning and 115.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-11-10 12:12:21,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.21ms. Allocated memory is still 198.2MB. Free memory was 115.0MB in the beginning and 170.4MB in the end (delta: -55.4MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2023-11-10 12:12:21,591 INFO L158 Benchmark]: Boogie Preprocessor took 34.78ms. Allocated memory is still 198.2MB. Free memory was 170.4MB in the beginning and 168.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 12:12:21,591 INFO L158 Benchmark]: RCFGBuilder took 548.29ms. Allocated memory is still 198.2MB. Free memory was 168.3MB in the beginning and 142.6MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-11-10 12:12:21,593 INFO L158 Benchmark]: TraceAbstraction took 588914.38ms. Allocated memory was 198.2MB in the beginning and 275.8MB in the end (delta: 77.6MB). Free memory was 142.1MB in the beginning and 238.8MB in the end (delta: -96.7MB). Peak memory consumption was 137.7MB. Max. memory is 8.0GB. [2023-11-10 12:12:21,595 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 198.2MB. Free memory is still 153.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 554.22ms. Allocated memory is still 198.2MB. Free memory was 150.7MB in the beginning and 115.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 71.21ms. Allocated memory is still 198.2MB. Free memory was 115.0MB in the beginning and 170.4MB in the end (delta: -55.4MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.78ms. Allocated memory is still 198.2MB. Free memory was 170.4MB in the beginning and 168.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 548.29ms. Allocated memory is still 198.2MB. Free memory was 168.3MB in the beginning and 142.6MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 588914.38ms. Allocated memory was 198.2MB in the beginning and 275.8MB in the end (delta: 77.6MB). Free memory was 142.1MB in the beginning and 238.8MB in the end (delta: -96.7MB). Peak memory consumption was 137.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 212/247 universal loopers) in iteration 4,while PetriNetUnfolder was constructing finite prefix that currently has 14 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 212/247 universal loopers) in iteration 4,while PetriNetUnfolder was constructing finite prefix that currently has 14 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 212/247 universal loopers) in iteration 4,while PetriNetUnfolder was constructing finite prefix that currently has 14 conditions, 2 events (0/1 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 345 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: 588.8s, OverallIterations: 4, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 18 mSDtfsCounter, 176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 366 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=652occurred in iteration=3, InterpolantAutomatonStates: 33, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 528 NumberOfCodeBlocks, 528 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 680 ConstructedInterpolants, 0 QuantifiedInterpolants, 1304 SizeOfPredicates, 8 NumberOfNonLiveVariables, 582 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 40/539 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown