./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c4f91361 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-c4f9136-m [2023-11-23 15:54:54,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 15:54:54,840 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 15:54:54,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 15:54:54,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 15:54:54,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 15:54:54,862 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 15:54:54,863 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 15:54:54,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 15:54:54,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 15:54:54,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 15:54:54,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 15:54:54,868 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 15:54:54,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 15:54:54,870 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 15:54:54,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 15:54:54,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 15:54:54,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 15:54:54,870 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 15:54:54,871 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 15:54:54,871 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 15:54:54,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 15:54:54,871 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 15:54:54,872 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 15:54:54,872 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 15:54:54,872 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 15:54:54,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 15:54:54,873 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 15:54:54,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 15:54:54,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 15:54:54,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:54:54,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 15:54:54,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 15:54:54,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 15:54:54,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 15:54:54,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 15:54:54,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 15:54:54,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 15:54:54,875 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 15:54:54,875 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2023-11-23 15:54:55,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 15:54:55,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 15:54:55,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 15:54:55,065 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 15:54:55,066 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 15:54:55,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-23 15:54:56,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 15:54:56,324 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 15:54:56,324 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2023-11-23 15:54:56,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972e7fd75/ed0d804b26a145e8bb0dca062095a13b/FLAGdc74628c5 [2023-11-23 15:54:56,353 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972e7fd75/ed0d804b26a145e8bb0dca062095a13b [2023-11-23 15:54:56,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 15:54:56,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 15:54:56,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 15:54:56,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 15:54:56,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 15:54:56,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e09bbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56, skipping insertion in model container [2023-11-23 15:54:56,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 15:54:56,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:54:56,823 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 15:54:56,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 15:54:56,916 INFO L206 MainTranslator]: Completed translation [2023-11-23 15:54:56,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56 WrapperNode [2023-11-23 15:54:56,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 15:54:56,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 15:54:56,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 15:54:56,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 15:54:56,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,956 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,981 INFO L138 Inliner]: procedures = 365, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2023-11-23 15:54:56,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 15:54:56,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 15:54:56,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 15:54:56,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 15:54:56,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:56,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:57,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:57,012 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 15:54:57,013 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 15:54:57,013 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 15:54:57,013 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 15:54:57,014 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (1/1) ... [2023-11-23 15:54:57,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 15:54:57,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:54:57,081 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) [2023-11-23 15:54:57,087 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 [2023-11-23 15:54:57,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 15:54:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 15:54:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 15:54:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 15:54:57,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 15:54:57,119 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 15:54:57,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 15:54:57,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2023-11-23 15:54:57,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2023-11-23 15:54:57,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 15:54:57,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 15:54:57,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 15:54:57,120 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 15:54:57,271 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 15:54:57,274 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 15:54:57,442 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 15:54:57,527 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 15:54:57,527 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 15:54:57,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:57 BoogieIcfgContainer [2023-11-23 15:54:57,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 15:54:57,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 15:54:57,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 15:54:57,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 15:54:57,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:54:56" (1/3) ... [2023-11-23 15:54:57,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c459f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:54:57, skipping insertion in model container [2023-11-23 15:54:57,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:54:56" (2/3) ... [2023-11-23 15:54:57,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c459f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:54:57, skipping insertion in model container [2023-11-23 15:54:57,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:57" (3/3) ... [2023-11-23 15:54:57,533 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2023-11-23 15:54:57,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 15:54:57,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 15:54:57,546 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 15:54:57,581 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 15:54:57,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 77 flow [2023-11-23 15:54:57,619 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2023-11-23 15:54:57,619 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 15:54:57,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 34 events. 4/34 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 63 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-11-23 15:54:57,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 77 flow [2023-11-23 15:54:57,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 33 transitions, 72 flow [2023-11-23 15:54:57,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 15:54:57,643 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=All, 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;@10d3aa9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 15:54:57,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-23 15:54:57,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 15:54:57,645 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-23 15:54:57,645 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 15:54:57,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:54:57,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 15:54:57,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:54:57,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:54:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash 9036, now seen corresponding path program 1 times [2023-11-23 15:54:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:54:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992855185] [2023-11-23 15:54:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:54:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:54:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:54:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:54:57,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:54:57,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992855185] [2023-11-23 15:54:57,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992855185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:54:57,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:54:57,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 15:54:57,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586955549] [2023-11-23 15:54:57,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:54:57,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:54:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:54:57,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:54:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:54:57,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2023-11-23 15:54:57,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-23 15:54:57,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:54:57,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2023-11-23 15:54:57,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:54:57,959 INFO L124 PetriNetUnfolderBase]: 43/102 cut-off events. [2023-11-23 15:54:57,959 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 15:54:57,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 102 events. 43/102 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 325 event pairs, 30 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 176. Up to 90 conditions per place. [2023-11-23 15:54:57,961 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 18 selfloop transitions, 1 changer transitions 1/26 dead transitions. [2023-11-23 15:54:57,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 96 flow [2023-11-23 15:54:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:54:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 15:54:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2023-11-23 15:54:57,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-11-23 15:54:57,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 51 transitions. [2023-11-23 15:54:57,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 51 transitions. [2023-11-23 15:54:57,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:54:57,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 51 transitions. [2023-11-23 15:54:57,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-11-23 15:54:57,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:57,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:57,978 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 72 flow. Second operand 3 states and 51 transitions. [2023-11-23 15:54:57,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 96 flow [2023-11-23 15:54:57,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-23 15:54:57,982 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 54 flow [2023-11-23 15:54:57,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-11-23 15:54:57,989 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-11-23 15:54:57,989 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 54 flow [2023-11-23 15:54:57,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-23 15:54:57,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:54:57,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 15:54:57,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 15:54:57,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:54:57,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:54:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash 9037, now seen corresponding path program 1 times [2023-11-23 15:54:57,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:54:57,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669733541] [2023-11-23 15:54:57,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:54:57,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:54:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:54:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:54:58,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:54:58,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669733541] [2023-11-23 15:54:58,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669733541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:54:58,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:54:58,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 15:54:58,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911660174] [2023-11-23 15:54:58,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:54:58,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:54:58,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:54:58,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:54:58,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:54:58,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-23 15:54:58,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-11-23 15:54:58,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:54:58,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-23 15:54:58,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:54:58,106 INFO L124 PetriNetUnfolderBase]: 37/88 cut-off events. [2023-11-23 15:54:58,107 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-23 15:54:58,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 88 events. 37/88 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 261 event pairs, 25 based on Foata normal form. 7/93 useless extension candidates. Maximal degree in co-relation 164. Up to 77 conditions per place. [2023-11-23 15:54:58,108 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 16 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-23 15:54:58,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 84 flow [2023-11-23 15:54:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:54:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 15:54:58,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2023-11-23 15:54:58,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2023-11-23 15:54:58,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 52 transitions. [2023-11-23 15:54:58,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 52 transitions. [2023-11-23 15:54:58,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:54:58,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 52 transitions. [2023-11-23 15:54:58,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-11-23 15:54:58,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:58,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:58,111 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 54 flow. Second operand 3 states and 52 transitions. [2023-11-23 15:54:58,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 84 flow [2023-11-23 15:54:58,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 83 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 15:54:58,112 INFO L231 Difference]: Finished difference. Result has 26 places, 23 transitions, 51 flow [2023-11-23 15:54:58,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=26, PETRI_TRANSITIONS=23} [2023-11-23 15:54:58,113 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -7 predicate places. [2023-11-23 15:54:58,113 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 23 transitions, 51 flow [2023-11-23 15:54:58,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2023-11-23 15:54:58,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:54:58,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:54:58,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 15:54:58,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:54:58,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:54:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1582458589, now seen corresponding path program 1 times [2023-11-23 15:54:58,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:54:58,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691434981] [2023-11-23 15:54:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:54:58,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:54:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:54:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:54:58,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:54:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691434981] [2023-11-23 15:54:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691434981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:54:58,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:54:58,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:54:58,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296259445] [2023-11-23 15:54:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:54:58,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:54:58,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:54:58,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:54:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:54:58,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-23 15:54:58,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 23 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2023-11-23 15:54:58,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:54:58,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-23 15:54:58,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:54:58,221 INFO L124 PetriNetUnfolderBase]: 61/141 cut-off events. [2023-11-23 15:54:58,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 15:54:58,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 141 events. 61/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 457 event pairs, 25 based on Foata normal form. 6/146 useless extension candidates. Maximal degree in co-relation 265. Up to 78 conditions per place. [2023-11-23 15:54:58,223 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 25 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-23 15:54:58,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 125 flow [2023-11-23 15:54:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:54:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 15:54:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-23 15:54:58,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2023-11-23 15:54:58,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-23 15:54:58,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-23 15:54:58,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:54:58,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-23 15:54:58,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2023-11-23 15:54:58,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:58,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:58,226 INFO L175 Difference]: Start difference. First operand has 26 places, 23 transitions, 51 flow. Second operand 3 states and 67 transitions. [2023-11-23 15:54:58,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 125 flow [2023-11-23 15:54:58,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 15:54:58,227 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 62 flow [2023-11-23 15:54:58,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-11-23 15:54:58,228 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2023-11-23 15:54:58,228 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 62 flow [2023-11-23 15:54:58,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2023-11-23 15:54:58,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:54:58,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:54:58,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 15:54:58,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:54:58,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:54:58,230 INFO L85 PathProgramCache]: Analyzing trace with hash -720349234, now seen corresponding path program 1 times [2023-11-23 15:54:58,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:54:58,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255744261] [2023-11-23 15:54:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:54:58,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:54:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:54:58,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:54:58,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:54:58,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255744261] [2023-11-23 15:54:58,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255744261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:54:58,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:54:58,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:54:58,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415807817] [2023-11-23 15:54:58,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:54:58,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:54:58,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:54:58,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:54:58,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:54:58,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-23 15:54:58,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-11-23 15:54:58,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:54:58,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-23 15:54:58,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:54:58,372 INFO L124 PetriNetUnfolderBase]: 101/235 cut-off events. [2023-11-23 15:54:58,372 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-23 15:54:58,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 235 events. 101/235 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 900 event pairs, 45 based on Foata normal form. 10/245 useless extension candidates. Maximal degree in co-relation 489. Up to 126 conditions per place. [2023-11-23 15:54:58,377 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-23 15:54:58,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 152 flow [2023-11-23 15:54:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:54:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 15:54:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-23 15:54:58,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2023-11-23 15:54:58,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-23 15:54:58,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-23 15:54:58,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:54:58,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-23 15:54:58,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2023-11-23 15:54:58,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:58,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:58,385 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 62 flow. Second operand 3 states and 67 transitions. [2023-11-23 15:54:58,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 152 flow [2023-11-23 15:54:58,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 15:54:58,387 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 72 flow [2023-11-23 15:54:58,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-23 15:54:58,389 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-11-23 15:54:58,389 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 72 flow [2023-11-23 15:54:58,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-11-23 15:54:58,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:54:58,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:54:58,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 15:54:58,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:54:58,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:54:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1469131688, now seen corresponding path program 1 times [2023-11-23 15:54:58,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:54:58,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322772492] [2023-11-23 15:54:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:54:58,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:54:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:54:58,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:54:58,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:54:58,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322772492] [2023-11-23 15:54:58,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322772492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:54:58,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 15:54:58,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 15:54:58,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954641518] [2023-11-23 15:54:58,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:54:58,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 15:54:58,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:54:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 15:54:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 15:54:58,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-23 15:54:58,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-23 15:54:58,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:54:58,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-23 15:54:58,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:54:58,564 INFO L124 PetriNetUnfolderBase]: 69/177 cut-off events. [2023-11-23 15:54:58,564 INFO L125 PetriNetUnfolderBase]: For 78/79 co-relation queries the response was YES. [2023-11-23 15:54:58,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 177 events. 69/177 cut-off events. For 78/79 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 566 event pairs, 25 based on Foata normal form. 16/192 useless extension candidates. Maximal degree in co-relation 423. Up to 80 conditions per place. [2023-11-23 15:54:58,568 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 23 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-11-23 15:54:58,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 160 flow [2023-11-23 15:54:58,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 15:54:58,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 15:54:58,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2023-11-23 15:54:58,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2023-11-23 15:54:58,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2023-11-23 15:54:58,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2023-11-23 15:54:58,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:54:58,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2023-11-23 15:54:58,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-11-23 15:54:58,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:58,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2023-11-23 15:54:58,577 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 72 flow. Second operand 3 states and 64 transitions. [2023-11-23 15:54:58,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 160 flow [2023-11-23 15:54:58,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 15:54:58,579 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 78 flow [2023-11-23 15:54:58,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-11-23 15:54:58,581 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-23 15:54:58,581 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 78 flow [2023-11-23 15:54:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-23 15:54:58,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:54:58,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:54:58,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 15:54:58,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:54:58,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:54:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1349169948, now seen corresponding path program 2 times [2023-11-23 15:54:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:54:58,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719269383] [2023-11-23 15:54:58,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:54:58,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:54:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:54:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:54:58,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:54:58,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719269383] [2023-11-23 15:54:58,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719269383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:54:58,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671969036] [2023-11-23 15:54:58,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:54:58,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:54:58,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:54:58,672 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) [2023-11-23 15:54:58,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 15:54:58,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:54:58,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:54:58,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 15:54:58,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:54:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:54:58,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:54:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:54:58,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671969036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:54:58,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:54:58,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-23 15:54:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861253981] [2023-11-23 15:54:58,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:54:58,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:54:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:54:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:54:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:54:58,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:54:58,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2023-11-23 15:54:58,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:54:58,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:54:58,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:54:58,944 INFO L124 PetriNetUnfolderBase]: 167/386 cut-off events. [2023-11-23 15:54:58,944 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-11-23 15:54:58,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 386 events. 167/386 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1349 event pairs, 14 based on Foata normal form. 30/416 useless extension candidates. Maximal degree in co-relation 1014. Up to 86 conditions per place. [2023-11-23 15:54:58,946 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 57 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-11-23 15:54:58,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 68 transitions, 354 flow [2023-11-23 15:54:58,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:54:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 15:54:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2023-11-23 15:54:58,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-23 15:54:58,947 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 133 transitions. [2023-11-23 15:54:58,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 133 transitions. [2023-11-23 15:54:58,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:54:58,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 133 transitions. [2023-11-23 15:54:58,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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) [2023-11-23 15:54:58,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2023-11-23 15:54:58,949 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2023-11-23 15:54:58,949 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 78 flow. Second operand 6 states and 133 transitions. [2023-11-23 15:54:58,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 68 transitions, 354 flow [2023-11-23 15:54:58,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 68 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 15:54:58,951 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 114 flow [2023-11-23 15:54:58,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-11-23 15:54:58,951 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 6 predicate places. [2023-11-23 15:54:58,951 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 114 flow [2023-11-23 15:54:58,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 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) [2023-11-23 15:54:58,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:54:58,952 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:54:58,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 15:54:59,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 15:54:59,163 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:54:59,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:54:59,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1669768458, now seen corresponding path program 3 times [2023-11-23 15:54:59,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:54:59,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605181781] [2023-11-23 15:54:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:54:59,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:54:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:54:59,206 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 15:54:59,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:54:59,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605181781] [2023-11-23 15:54:59,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605181781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:54:59,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756525066] [2023-11-23 15:54:59,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 15:54:59,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:54:59,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:54:59,226 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) [2023-11-23 15:54:59,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 15:54:59,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 15:54:59,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:54:59,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 15:54:59,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:54:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 15:54:59,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:54:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 15:54:59,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756525066] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:54:59,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:54:59,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-23 15:54:59,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342344905] [2023-11-23 15:54:59,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:54:59,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 15:54:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:54:59,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 15:54:59,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 15:54:59,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:54:59,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 114 flow. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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) [2023-11-23 15:54:59,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:54:59,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:54:59,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:54:59,485 INFO L124 PetriNetUnfolderBase]: 294/703 cut-off events. [2023-11-23 15:54:59,493 INFO L125 PetriNetUnfolderBase]: For 865/866 co-relation queries the response was YES. [2023-11-23 15:54:59,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047 conditions, 703 events. 294/703 cut-off events. For 865/866 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2939 event pairs, 51 based on Foata normal form. 57/760 useless extension candidates. Maximal degree in co-relation 2034. Up to 156 conditions per place. [2023-11-23 15:54:59,497 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 67 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-11-23 15:54:59,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 79 transitions, 524 flow [2023-11-23 15:54:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 15:54:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 15:54:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2023-11-23 15:54:59,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-23 15:54:59,500 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 133 transitions. [2023-11-23 15:54:59,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 133 transitions. [2023-11-23 15:54:59,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:54:59,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 133 transitions. [2023-11-23 15:54:59,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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) [2023-11-23 15:54:59,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2023-11-23 15:54:59,502 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 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) [2023-11-23 15:54:59,502 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 114 flow. Second operand 6 states and 133 transitions. [2023-11-23 15:54:59,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 79 transitions, 524 flow [2023-11-23 15:54:59,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 79 transitions, 484 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-11-23 15:54:59,508 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 146 flow [2023-11-23 15:54:59,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-11-23 15:54:59,509 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-11-23 15:54:59,509 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 146 flow [2023-11-23 15:54:59,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 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) [2023-11-23 15:54:59,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:54:59,510 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:54:59,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 15:54:59,720 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,SelfDestructingSolverStorable6 [2023-11-23 15:54:59,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:54:59,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:54:59,722 INFO L85 PathProgramCache]: Analyzing trace with hash -118672207, now seen corresponding path program 4 times [2023-11-23 15:54:59,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:54:59,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366584090] [2023-11-23 15:54:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:54:59,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:54:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:54:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 15:54:59,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:54:59,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366584090] [2023-11-23 15:54:59,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366584090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:54:59,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784771891] [2023-11-23 15:54:59,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 15:54:59,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:54:59,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:54:59,874 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) [2023-11-23 15:54:59,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 15:54:59,982 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 15:54:59,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:54:59,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 15:54:59,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:55:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 15:55:00,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:55:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 15:55:00,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784771891] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:55:00,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:55:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-23 15:55:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841079766] [2023-11-23 15:55:00,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:55:00,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 15:55:00,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:55:00,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 15:55:00,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-11-23 15:55:00,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:55:00,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 146 flow. Second operand has 17 states, 17 states have (on average 17.352941176470587) internal successors, (295), 17 states have internal predecessors, (295), 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) [2023-11-23 15:55:00,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:55:00,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:55:00,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:55:01,177 INFO L124 PetriNetUnfolderBase]: 899/2082 cut-off events. [2023-11-23 15:55:01,177 INFO L125 PetriNetUnfolderBase]: For 3912/3912 co-relation queries the response was YES. [2023-11-23 15:55:01,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6880 conditions, 2082 events. 899/2082 cut-off events. For 3912/3912 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10201 event pairs, 10 based on Foata normal form. 209/2291 useless extension candidates. Maximal degree in co-relation 6863. Up to 371 conditions per place. [2023-11-23 15:55:01,190 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 471 selfloop transitions, 138 changer transitions 0/615 dead transitions. [2023-11-23 15:55:01,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 615 transitions, 3754 flow [2023-11-23 15:55:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-23 15:55:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-11-23 15:55:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 1460 transitions. [2023-11-23 15:55:01,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226012793176973 [2023-11-23 15:55:01,194 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 1460 transitions. [2023-11-23 15:55:01,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 1460 transitions. [2023-11-23 15:55:01,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:55:01,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 1460 transitions. [2023-11-23 15:55:01,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 21.791044776119403) internal successors, (1460), 67 states have internal predecessors, (1460), 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) [2023-11-23 15:55:01,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 35.0) internal successors, (2380), 68 states have internal predecessors, (2380), 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) [2023-11-23 15:55:01,201 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 35.0) internal successors, (2380), 68 states have internal predecessors, (2380), 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) [2023-11-23 15:55:01,201 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 146 flow. Second operand 67 states and 1460 transitions. [2023-11-23 15:55:01,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 615 transitions, 3754 flow [2023-11-23 15:55:01,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 615 transitions, 3634 flow, removed 54 selfloop flow, removed 1 redundant places. [2023-11-23 15:55:01,211 INFO L231 Difference]: Finished difference. Result has 158 places, 170 transitions, 1572 flow [2023-11-23 15:55:01,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=1572, PETRI_PLACES=158, PETRI_TRANSITIONS=170} [2023-11-23 15:55:01,212 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 125 predicate places. [2023-11-23 15:55:01,212 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 170 transitions, 1572 flow [2023-11-23 15:55:01,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.352941176470587) internal successors, (295), 17 states have internal predecessors, (295), 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) [2023-11-23 15:55:01,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:55:01,212 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:55:01,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 15:55:01,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:55:01,426 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:55:01,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:55:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1783250311, now seen corresponding path program 5 times [2023-11-23 15:55:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:55:01,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733861346] [2023-11-23 15:55:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:55:01,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:55:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:55:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-23 15:55:01,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:55:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733861346] [2023-11-23 15:55:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733861346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:55:01,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276514187] [2023-11-23 15:55:01,601 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 15:55:01,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:55:01,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:55:01,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:55:01,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 15:55:01,769 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-23 15:55:01,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:55:01,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 15:55:01,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:55:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-23 15:55:01,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:55:01,976 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-23 15:55:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276514187] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:55:01,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:55:01,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-23 15:55:01,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240722197] [2023-11-23 15:55:01,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:55:01,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 15:55:01,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:55:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 15:55:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-11-23 15:55:01,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:55:01,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 170 transitions, 1572 flow. Second operand has 15 states, 15 states have (on average 17.066666666666666) internal successors, (256), 15 states have internal predecessors, (256), 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) [2023-11-23 15:55:01,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:55:01,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:55:01,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:55:02,717 INFO L124 PetriNetUnfolderBase]: 1737/4149 cut-off events. [2023-11-23 15:55:02,718 INFO L125 PetriNetUnfolderBase]: For 97803/97803 co-relation queries the response was YES. [2023-11-23 15:55:02,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18191 conditions, 4149 events. 1737/4149 cut-off events. For 97803/97803 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 23522 event pairs, 166 based on Foata normal form. 301/4440 useless extension candidates. Maximal degree in co-relation 18128. Up to 693 conditions per place. [2023-11-23 15:55:02,748 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 249 selfloop transitions, 144 changer transitions 0/405 dead transitions. [2023-11-23 15:55:02,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 405 transitions, 4828 flow [2023-11-23 15:55:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 15:55:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-23 15:55:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 321 transitions. [2023-11-23 15:55:02,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551020408163265 [2023-11-23 15:55:02,750 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 321 transitions. [2023-11-23 15:55:02,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 321 transitions. [2023-11-23 15:55:02,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:55:02,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 321 transitions. [2023-11-23 15:55:02,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 22.928571428571427) internal successors, (321), 14 states have internal predecessors, (321), 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) [2023-11-23 15:55:02,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 35.0) internal successors, (525), 15 states have internal predecessors, (525), 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) [2023-11-23 15:55:02,752 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 35.0) internal successors, (525), 15 states have internal predecessors, (525), 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) [2023-11-23 15:55:02,752 INFO L175 Difference]: Start difference. First operand has 158 places, 170 transitions, 1572 flow. Second operand 14 states and 321 transitions. [2023-11-23 15:55:02,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 405 transitions, 4828 flow [2023-11-23 15:55:02,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 405 transitions, 4684 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-23 15:55:02,922 INFO L231 Difference]: Finished difference. Result has 173 places, 237 transitions, 2486 flow [2023-11-23 15:55:02,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2486, PETRI_PLACES=173, PETRI_TRANSITIONS=237} [2023-11-23 15:55:02,922 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 140 predicate places. [2023-11-23 15:55:02,923 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 237 transitions, 2486 flow [2023-11-23 15:55:02,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 17.066666666666666) internal successors, (256), 15 states have internal predecessors, (256), 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) [2023-11-23 15:55:02,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:55:02,923 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:55:02,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 15:55:03,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:55:03,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:55:03,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:55:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1316990335, now seen corresponding path program 6 times [2023-11-23 15:55:03,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:55:03,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309567364] [2023-11-23 15:55:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:55:03,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:55:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:55:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-23 15:55:03,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:55:03,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309567364] [2023-11-23 15:55:03,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309567364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:55:03,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128751431] [2023-11-23 15:55:03,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 15:55:03,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:55:03,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:55:03,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:55:03,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 15:55:03,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-11-23 15:55:03,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:55:03,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 15:55:03,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:55:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-23 15:55:03,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:55:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-23 15:55:04,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128751431] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:55:04,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:55:04,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 35 [2023-11-23 15:55:04,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230256540] [2023-11-23 15:55:04,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:55:04,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 15:55:04,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:55:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 15:55:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 15:55:04,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:55:04,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 237 transitions, 2486 flow. Second operand has 35 states, 35 states have (on average 16.771428571428572) internal successors, (587), 35 states have internal predecessors, (587), 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) [2023-11-23 15:55:04,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:55:04,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:55:04,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:55:15,312 INFO L124 PetriNetUnfolderBase]: 3735/8804 cut-off events. [2023-11-23 15:55:15,319 INFO L125 PetriNetUnfolderBase]: For 539514/539514 co-relation queries the response was YES. [2023-11-23 15:55:15,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41548 conditions, 8804 events. 3735/8804 cut-off events. For 539514/539514 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 54336 event pairs, 10 based on Foata normal form. 683/9487 useless extension candidates. Maximal degree in co-relation 41477. Up to 1545 conditions per place. [2023-11-23 15:55:15,394 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 2073 selfloop transitions, 742 changer transitions 0/2822 dead transitions. [2023-11-23 15:55:15,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 2822 transitions, 23824 flow [2023-11-23 15:55:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 295 states. [2023-11-23 15:55:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2023-11-23 15:55:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 6366 transitions. [2023-11-23 15:55:15,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6165617433414043 [2023-11-23 15:55:15,407 INFO L72 ComplementDD]: Start complementDD. Operand 295 states and 6366 transitions. [2023-11-23 15:55:15,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 295 states and 6366 transitions. [2023-11-23 15:55:15,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:55:15,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 295 states and 6366 transitions. [2023-11-23 15:55:15,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 296 states, 295 states have (on average 21.579661016949153) internal successors, (6366), 295 states have internal predecessors, (6366), 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) [2023-11-23 15:55:15,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 296 states, 296 states have (on average 35.0) internal successors, (10360), 296 states have internal predecessors, (10360), 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) [2023-11-23 15:55:15,431 INFO L81 ComplementDD]: Finished complementDD. Result has 296 states, 296 states have (on average 35.0) internal successors, (10360), 296 states have internal predecessors, (10360), 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) [2023-11-23 15:55:15,432 INFO L175 Difference]: Start difference. First operand has 173 places, 237 transitions, 2486 flow. Second operand 295 states and 6366 transitions. [2023-11-23 15:55:15,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 2822 transitions, 23824 flow [2023-11-23 15:55:15,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 2822 transitions, 23514 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-23 15:55:15,704 INFO L231 Difference]: Finished difference. Result has 626 places, 801 transitions, 11128 flow [2023-11-23 15:55:15,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=295, PETRI_FLOW=11128, PETRI_PLACES=626, PETRI_TRANSITIONS=801} [2023-11-23 15:55:15,706 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 593 predicate places. [2023-11-23 15:55:15,706 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 801 transitions, 11128 flow [2023-11-23 15:55:15,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 16.771428571428572) internal successors, (587), 35 states have internal predecessors, (587), 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) [2023-11-23 15:55:15,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:55:15,707 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:55:15,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 15:55:15,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 15:55:15,923 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:55:15,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:55:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash 665625489, now seen corresponding path program 7 times [2023-11-23 15:55:15,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:55:15,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607888767] [2023-11-23 15:55:15,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:55:15,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:55:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:55:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 20 proven. 403 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-11-23 15:55:16,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:55:16,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607888767] [2023-11-23 15:55:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607888767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:55:16,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130924535] [2023-11-23 15:55:16,306 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 15:55:16,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:55:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:55:16,319 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:55:16,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 15:55:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:55:16,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 15:55:16,502 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:55:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 20 proven. 403 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-11-23 15:55:16,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:55:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 20 proven. 403 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-11-23 15:55:16,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130924535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:55:16,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:55:16,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2023-11-23 15:55:16,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686272888] [2023-11-23 15:55:16,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:55:16,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 15:55:16,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:55:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 15:55:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-23 15:55:16,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:55:16,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 801 transitions, 11128 flow. Second operand has 23 states, 23 states have (on average 17.043478260869566) internal successors, (392), 23 states have internal predecessors, (392), 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) [2023-11-23 15:55:16,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:55:16,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:55:16,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:55:22,923 INFO L124 PetriNetUnfolderBase]: 5495/13616 cut-off events. [2023-11-23 15:55:22,924 INFO L125 PetriNetUnfolderBase]: For 2415170/2415170 co-relation queries the response was YES. [2023-11-23 15:55:23,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84534 conditions, 13616 events. 5495/13616 cut-off events. For 2415170/2415170 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 92426 event pairs, 276 based on Foata normal form. 651/14252 useless extension candidates. Maximal degree in co-relation 84299. Up to 2295 conditions per place. [2023-11-23 15:55:23,131 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 611 selfloop transitions, 652 changer transitions 0/1289 dead transitions. [2023-11-23 15:55:23,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 1289 transitions, 25778 flow [2023-11-23 15:55:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 15:55:23,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-23 15:55:23,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 505 transitions. [2023-11-23 15:55:23,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6558441558441559 [2023-11-23 15:55:23,134 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 505 transitions. [2023-11-23 15:55:23,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 505 transitions. [2023-11-23 15:55:23,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:55:23,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 505 transitions. [2023-11-23 15:55:23,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 22.954545454545453) internal successors, (505), 22 states have internal predecessors, (505), 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) [2023-11-23 15:55:23,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 35.0) internal successors, (805), 23 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:55:23,136 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 35.0) internal successors, (805), 23 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 15:55:23,136 INFO L175 Difference]: Start difference. First operand has 626 places, 801 transitions, 11128 flow. Second operand 22 states and 505 transitions. [2023-11-23 15:55:23,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 1289 transitions, 25778 flow [2023-11-23 15:55:28,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 1289 transitions, 24590 flow, removed 165 selfloop flow, removed 60 redundant places. [2023-11-23 15:55:28,730 INFO L231 Difference]: Finished difference. Result has 595 places, 988 transitions, 14498 flow [2023-11-23 15:55:28,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=10198, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=465, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=14498, PETRI_PLACES=595, PETRI_TRANSITIONS=988} [2023-11-23 15:55:28,731 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 562 predicate places. [2023-11-23 15:55:28,732 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 988 transitions, 14498 flow [2023-11-23 15:55:28,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.043478260869566) internal successors, (392), 23 states have internal predecessors, (392), 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) [2023-11-23 15:55:28,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:55:28,732 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:55:28,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 15:55:28,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:55:28,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:55:28,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:55:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -58236189, now seen corresponding path program 8 times [2023-11-23 15:55:28,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:55:28,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021277509] [2023-11-23 15:55:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:55:28,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:55:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:55:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:55:30,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:55:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021277509] [2023-11-23 15:55:30,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021277509] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:55:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415072333] [2023-11-23 15:55:30,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 15:55:30,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:55:30,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:55:30,830 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:55:30,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 15:55:31,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 15:55:31,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:55:31,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 125 conjunts are in the unsatisfiable core [2023-11-23 15:55:31,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:55:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:55:31,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 15:55:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 15:55:31,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415072333] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 15:55:31,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 15:55:31,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2023-11-23 15:55:31,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030814848] [2023-11-23 15:55:31,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 15:55:31,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-23 15:55:31,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:55:31,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-23 15:55:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2023-11-23 15:55:31,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:55:31,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 988 transitions, 14498 flow. Second operand has 45 states, 45 states have (on average 15.8) internal successors, (711), 45 states have internal predecessors, (711), 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) [2023-11-23 15:55:31,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:55:31,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:55:31,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:55:51,577 INFO L124 PetriNetUnfolderBase]: 9790/24790 cut-off events. [2023-11-23 15:55:51,577 INFO L125 PetriNetUnfolderBase]: For 17335347/17335347 co-relation queries the response was YES. [2023-11-23 15:55:52,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352612 conditions, 24790 events. 9790/24790 cut-off events. For 17335347/17335347 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 197217 event pairs, 1193 based on Foata normal form. 1/24790 useless extension candidates. Maximal degree in co-relation 352369. Up to 4646 conditions per place. [2023-11-23 15:55:52,721 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 3223 selfloop transitions, 83 changer transitions 2/3338 dead transitions. [2023-11-23 15:55:52,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 3338 transitions, 60601 flow [2023-11-23 15:55:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-23 15:55:52,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-23 15:55:52,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 996 transitions. [2023-11-23 15:55:52,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6467532467532467 [2023-11-23 15:55:52,724 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 996 transitions. [2023-11-23 15:55:52,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 996 transitions. [2023-11-23 15:55:52,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:55:52,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 996 transitions. [2023-11-23 15:55:52,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 22.636363636363637) internal successors, (996), 44 states have internal predecessors, (996), 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) [2023-11-23 15:55:52,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 35.0) internal successors, (1575), 45 states have internal predecessors, (1575), 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) [2023-11-23 15:55:52,728 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 35.0) internal successors, (1575), 45 states have internal predecessors, (1575), 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) [2023-11-23 15:55:52,728 INFO L175 Difference]: Start difference. First operand has 595 places, 988 transitions, 14498 flow. Second operand 44 states and 996 transitions. [2023-11-23 15:55:52,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 3338 transitions, 60601 flow [2023-11-23 15:57:30,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 3338 transitions, 58495 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-23 15:57:30,267 INFO L231 Difference]: Finished difference. Result has 627 places, 1070 transitions, 14034 flow [2023-11-23 15:57:30,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=13692, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=988, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=985, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=14034, PETRI_PLACES=627, PETRI_TRANSITIONS=1070} [2023-11-23 15:57:30,269 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 594 predicate places. [2023-11-23 15:57:30,269 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 1070 transitions, 14034 flow [2023-11-23 15:57:30,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 15.8) internal successors, (711), 45 states have internal predecessors, (711), 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) [2023-11-23 15:57:30,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:57:30,270 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:57:30,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 15:57:30,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:57:30,481 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:57:30,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:57:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1323421314, now seen corresponding path program 9 times [2023-11-23 15:57:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:57:30,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796503115] [2023-11-23 15:57:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:57:30,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:57:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:57:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 116 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-11-23 15:57:31,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:57:31,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796503115] [2023-11-23 15:57:31,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796503115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:57:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518261927] [2023-11-23 15:57:31,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 15:57:31,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:57:31,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:57:31,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:57:31,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 15:57:31,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-11-23 15:57:31,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:57:31,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 15:57:31,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:57:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1091 proven. 0 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-11-23 15:57:31,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:57:31,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518261927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:57:31,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:57:31,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-11-23 15:57:31,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079343890] [2023-11-23 15:57:31,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:57:31,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 15:57:31,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:57:31,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 15:57:31,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-11-23 15:57:31,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:57:31,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 1070 transitions, 14034 flow. Second operand has 23 states, 23 states have (on average 17.130434782608695) internal successors, (394), 23 states have internal predecessors, (394), 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) [2023-11-23 15:57:31,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:57:31,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:57:31,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:57:42,660 INFO L124 PetriNetUnfolderBase]: 9149/21103 cut-off events. [2023-11-23 15:57:42,660 INFO L125 PetriNetUnfolderBase]: For 3106188/3106188 co-relation queries the response was YES. [2023-11-23 15:57:43,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183788 conditions, 21103 events. 9149/21103 cut-off events. For 3106188/3106188 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 158253 event pairs, 155 based on Foata normal form. 89/21191 useless extension candidates. Maximal degree in co-relation 183541. Up to 4121 conditions per place. [2023-11-23 15:57:43,113 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 2218 selfloop transitions, 294 changer transitions 0/2520 dead transitions. [2023-11-23 15:57:43,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 2520 transitions, 27636 flow [2023-11-23 15:57:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 15:57:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-23 15:57:43,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 516 transitions. [2023-11-23 15:57:43,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6409937888198758 [2023-11-23 15:57:43,114 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 516 transitions. [2023-11-23 15:57:43,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 516 transitions. [2023-11-23 15:57:43,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:57:43,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 516 transitions. [2023-11-23 15:57:43,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 22.434782608695652) internal successors, (516), 23 states have internal predecessors, (516), 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) [2023-11-23 15:57:43,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 35.0) internal successors, (840), 24 states have internal predecessors, (840), 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) [2023-11-23 15:57:43,116 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 35.0) internal successors, (840), 24 states have internal predecessors, (840), 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) [2023-11-23 15:57:43,116 INFO L175 Difference]: Start difference. First operand has 627 places, 1070 transitions, 14034 flow. Second operand 23 states and 516 transitions. [2023-11-23 15:57:43,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 2520 transitions, 27636 flow [2023-11-23 15:58:04,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 2520 transitions, 27634 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-23 15:58:05,010 INFO L231 Difference]: Finished difference. Result has 647 places, 1056 transitions, 14424 flow [2023-11-23 15:58:05,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=13836, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1056, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=762, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=14424, PETRI_PLACES=647, PETRI_TRANSITIONS=1056} [2023-11-23 15:58:05,011 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 614 predicate places. [2023-11-23 15:58:05,011 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 1056 transitions, 14424 flow [2023-11-23 15:58:05,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.130434782608695) internal successors, (394), 23 states have internal predecessors, (394), 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) [2023-11-23 15:58:05,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 15:58:05,012 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 15:58:05,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 15:58:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 15:58:05,225 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-23 15:58:05,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 15:58:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1136855177, now seen corresponding path program 10 times [2023-11-23 15:58:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 15:58:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138722857] [2023-11-23 15:58:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 15:58:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 15:58:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 15:58:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2023-11-23 15:58:05,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 15:58:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138722857] [2023-11-23 15:58:05,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138722857] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 15:58:05,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123289134] [2023-11-23 15:58:05,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 15:58:05,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 15:58:05,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 15:58:05,735 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 15:58:05,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 15:58:06,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 15:58:06,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 15:58:06,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 15:58:06,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 15:58:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2023-11-23 15:58:06,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 15:58:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123289134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 15:58:06,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 15:58:06,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-11-23 15:58:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876079206] [2023-11-23 15:58:06,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 15:58:06,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-23 15:58:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 15:58:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-23 15:58:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-11-23 15:58:06,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2023-11-23 15:58:06,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1056 transitions, 14424 flow. Second operand has 23 states, 23 states have (on average 17.130434782608695) internal successors, (394), 23 states have internal predecessors, (394), 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) [2023-11-23 15:58:06,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 15:58:06,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2023-11-23 15:58:06,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 15:58:12,281 INFO L124 PetriNetUnfolderBase]: 5390/13407 cut-off events. [2023-11-23 15:58:12,281 INFO L125 PetriNetUnfolderBase]: For 1876352/1876352 co-relation queries the response was YES. [2023-11-23 15:58:12,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88459 conditions, 13407 events. 5390/13407 cut-off events. For 1876352/1876352 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 92414 event pairs, 145 based on Foata normal form. 93/13470 useless extension candidates. Maximal degree in co-relation 88212. Up to 2282 conditions per place. [2023-11-23 15:58:12,455 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 0 selfloop transitions, 0 changer transitions 2133/2133 dead transitions. [2023-11-23 15:58:12,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 2133 transitions, 32095 flow [2023-11-23 15:58:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 15:58:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-23 15:58:12,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 514 transitions. [2023-11-23 15:58:12,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6385093167701863 [2023-11-23 15:58:12,458 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 514 transitions. [2023-11-23 15:58:12,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 514 transitions. [2023-11-23 15:58:12,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 15:58:12,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 514 transitions. [2023-11-23 15:58:12,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 22.347826086956523) internal successors, (514), 23 states have internal predecessors, (514), 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) [2023-11-23 15:58:12,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 35.0) internal successors, (840), 24 states have internal predecessors, (840), 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) [2023-11-23 15:58:12,461 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 35.0) internal successors, (840), 24 states have internal predecessors, (840), 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) [2023-11-23 15:58:12,461 INFO L175 Difference]: Start difference. First operand has 647 places, 1056 transitions, 14424 flow. Second operand 23 states and 514 transitions. [2023-11-23 15:58:12,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 2133 transitions, 32095 flow [2023-11-23 15:58:18,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 2133 transitions, 31127 flow, removed 0 selfloop flow, removed 24 redundant places. [2023-11-23 15:58:18,422 INFO L231 Difference]: Finished difference. Result has 641 places, 0 transitions, 0 flow [2023-11-23 15:58:18,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=13743, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1047, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=641, PETRI_TRANSITIONS=0} [2023-11-23 15:58:18,423 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 608 predicate places. [2023-11-23 15:58:18,423 INFO L495 AbstractCegarLoop]: Abstraction has has 641 places, 0 transitions, 0 flow [2023-11-23 15:58:18,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 17.130434782608695) internal successors, (394), 23 states have internal predecessors, (394), 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) [2023-11-23 15:58:18,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-11-23 15:58:18,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-11-23 15:58:18,425 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-11-23 15:58:18,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-11-23 15:58:18,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-11-23 15:58:18,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2023-11-23 15:58:18,426 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-11-23 15:58:18,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 15:58:18,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 15:58:18,640 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1, 1] [2023-11-23 15:58:18,643 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 15:58:18,643 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 15:58:18,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:58:18 BasicIcfg [2023-11-23 15:58:18,647 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 15:58:18,647 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 15:58:18,647 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 15:58:18,647 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 15:58:18,648 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:57" (3/4) ... [2023-11-23 15:58:18,649 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 15:58:18,651 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2023-11-23 15:58:18,656 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2023-11-23 15:58:18,656 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-23 15:58:18,657 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-23 15:58:18,657 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 15:58:18,717 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-11-23 15:58:18,719 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2023-11-23 15:58:18,719 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 15:58:18,720 INFO L158 Benchmark]: Toolchain (without parser) took 202363.80ms. Allocated memory was 192.9MB in the beginning and 8.4GB in the end (delta: 8.2GB). Free memory was 120.0MB in the beginning and 4.9GB in the end (delta: -4.8GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2023-11-23 15:58:18,720 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 80.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 15:58:18,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.66ms. Allocated memory is still 192.9MB. Free memory was 119.7MB in the beginning and 81.2MB in the end (delta: 38.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-23 15:58:18,721 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.58ms. Allocated memory is still 192.9MB. Free memory was 81.2MB in the beginning and 78.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 15:58:18,721 INFO L158 Benchmark]: Boogie Preprocessor took 30.27ms. Allocated memory is still 192.9MB. Free memory was 78.6MB in the beginning and 77.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 15:58:18,721 INFO L158 Benchmark]: RCFGBuilder took 514.69ms. Allocated memory is still 192.9MB. Free memory was 77.1MB in the beginning and 136.7MB in the end (delta: -59.6MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2023-11-23 15:58:18,721 INFO L158 Benchmark]: TraceAbstraction took 201117.99ms. Allocated memory was 192.9MB in the beginning and 8.4GB in the end (delta: 8.2GB). Free memory was 136.7MB in the beginning and 4.9GB in the end (delta: -4.7GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. [2023-11-23 15:58:18,721 INFO L158 Benchmark]: Witness Printer took 72.01ms. Allocated memory is still 8.4GB. Free memory was 4.9GB in the beginning and 4.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 15:58:18,723 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 117.4MB. Free memory was 80.8MB in the beginning and 80.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.66ms. Allocated memory is still 192.9MB. Free memory was 119.7MB in the beginning and 81.2MB in the end (delta: 38.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.58ms. Allocated memory is still 192.9MB. Free memory was 81.2MB in the beginning and 78.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.27ms. Allocated memory is still 192.9MB. Free memory was 78.6MB in the beginning and 77.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.69ms. Allocated memory is still 192.9MB. Free memory was 77.1MB in the beginning and 136.7MB in the end (delta: -59.6MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * TraceAbstraction took 201117.99ms. Allocated memory was 192.9MB in the beginning and 8.4GB in the end (delta: 8.2GB). Free memory was 136.7MB in the beginning and 4.9GB in the end (delta: -4.7GB). Peak memory consumption was 3.8GB. Max. memory is 16.1GB. * Witness Printer took 72.01ms. Allocated memory is still 8.4GB. Free memory was 4.9GB in the beginning and 4.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1334]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 40 locations, 7 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: 201.0s, OverallIterations: 14, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 190.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8363 SdHoareTripleChecker+Valid, 7.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8331 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22461 IncrementalHoareTripleChecker+Invalid, 22520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 3 mSDtfsCounter, 22461 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2587 GetRequests, 2081 SyntacticMatches, 11 SemanticMatches, 495 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35844 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14498occurred in iteration=11, InterpolantAutomatonStates: 515, 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: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 2362 NumberOfCodeBlocks, 2342 NumberOfCodeBlocksAsserted, 71 NumberOfCheckSat, 3048 ConstructedInterpolants, 0 QuantifiedInterpolants, 7213 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5007 ConjunctsInSsa, 215 ConjunctsInUnsatCore, 30 InterpolantComputations, 7 PerfectInterpolantSequences, 12670/21022 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 15:58:18,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE