./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread/triangular-longest-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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 15:59:10,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 15:59:10,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 15:59:10,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 15:59:10,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 15:59:10,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 15:59:10,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 15:59:10,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 15:59:10,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 15:59:10,861 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 15:59:10,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 15:59:10,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 15:59:10,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 15:59:10,863 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 15:59:10,863 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 15:59:10,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 15:59:10,864 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 15:59:10,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 15:59:10,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 15:59:10,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 15:59:10,864 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 15:59:10,865 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 15:59:10,865 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 15:59:10,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 15:59:10,865 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 15:59:10,865 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 15:59:10,865 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 15:59:10,866 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 15:59:10,866 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 15:59:10,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 15:59:10,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 15:59:10,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 15:59:10,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 15:59:10,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 15:59:10,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 15:59:10,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 15:59:10,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 15:59:10,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 15:59:10,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 15:59:10,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 15:59:10,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 15:59:10,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 15:59:10,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2024-11-12 15:59:11,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 15:59:11,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 15:59:11,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 15:59:11,093 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 15:59:11,093 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 15:59:11,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-12 15:59:12,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 15:59:12,609 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 15:59:12,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2024-11-12 15:59:12,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab65c7ea/7bc6c4f5affc47788f7f6ce05ef9313a/FLAGd365b6ff0 [2024-11-12 15:59:12,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ab65c7ea/7bc6c4f5affc47788f7f6ce05ef9313a [2024-11-12 15:59:12,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 15:59:12,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 15:59:12,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 15:59:12,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 15:59:12,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 15:59:12,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:12,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b5d603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12, skipping insertion in model container [2024-11-12 15:59:12,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:12,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 15:59:12,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 15:59:12,923 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 15:59:12,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 15:59:12,995 INFO L204 MainTranslator]: Completed translation [2024-11-12 15:59:12,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12 WrapperNode [2024-11-12 15:59:12,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 15:59:12,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 15:59:12,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 15:59:12,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 15:59:13,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,031 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-12 15:59:13,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 15:59:13,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 15:59:13,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 15:59:13,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 15:59:13,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,045 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,064 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-12 15:59:13,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,076 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,081 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 15:59:13,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 15:59:13,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 15:59:13,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 15:59:13,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (1/1) ... [2024-11-12 15:59:13,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 15:59:13,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:13,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 15:59:13,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 15:59:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-12 15:59:13,177 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-12 15:59:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-12 15:59:13,177 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-12 15:59:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 15:59:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 15:59:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 15:59:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 15:59:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 15:59:13,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 15:59:13,179 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 15:59:13,270 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 15:59:13,272 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 15:59:13,364 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 15:59:13,364 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 15:59:13,429 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 15:59:13,429 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 15:59:13,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:59:13 BoogieIcfgContainer [2024-11-12 15:59:13,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 15:59:13,431 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 15:59:13,431 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 15:59:13,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 15:59:13,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 03:59:12" (1/3) ... [2024-11-12 15:59:13,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e59ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:59:13, skipping insertion in model container [2024-11-12 15:59:13,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:59:12" (2/3) ... [2024-11-12 15:59:13,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e59ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:59:13, skipping insertion in model container [2024-11-12 15:59:13,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:59:13" (3/3) ... [2024-11-12 15:59:13,439 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2024-11-12 15:59:13,457 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 15:59:13,457 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-12 15:59:13,457 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 15:59:13,489 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 15:59:13,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2024-11-12 15:59:13,528 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-12 15:59:13,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 15:59:13,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-12 15:59:13,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2024-11-12 15:59:13,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2024-11-12 15:59:13,541 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 15:59:13,546 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@5bb98a20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 15:59:13,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-12 15:59:13,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 15:59:13,552 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-12 15:59:13,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 15:59:13,553 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:13,553 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:13,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:13,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:13,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1038261642, now seen corresponding path program 1 times [2024-11-12 15:59:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:13,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560613889] [2024-11-12 15:59:13,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:13,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:13,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560613889] [2024-11-12 15:59:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560613889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:59:13,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:59:13,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-12 15:59:13,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295278084] [2024-11-12 15:59:13,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:59:13,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 15:59:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:13,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 15:59:13,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 15:59:13,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-12 15:59:13,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-12 15:59:13,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:13,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-12 15:59:13,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:13,917 INFO L124 PetriNetUnfolderBase]: 70/157 cut-off events. [2024-11-12 15:59:13,918 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 15:59:13,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 157 events. 70/157 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 44 based on Foata normal form. 15/161 useless extension candidates. Maximal degree in co-relation 272. Up to 113 conditions per place. [2024-11-12 15:59:13,923 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 11 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2024-11-12 15:59:13,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 78 flow [2024-11-12 15:59:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 15:59:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 15:59:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-12 15:59:13,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-12 15:59:13,935 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-12 15:59:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 78 flow [2024-11-12 15:59:13,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 15:59:13,941 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2024-11-12 15:59:13,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2024-11-12 15:59:13,945 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2024-11-12 15:59:13,945 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2024-11-12 15:59:13,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-12 15:59:13,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:13,946 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:13,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 15:59:13,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:13,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1038262774, now seen corresponding path program 1 times [2024-11-12 15:59:13,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:13,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965144518] [2024-11-12 15:59:13,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:13,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:14,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:14,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965144518] [2024-11-12 15:59:14,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965144518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:59:14,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:59:14,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 15:59:14,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718834392] [2024-11-12 15:59:14,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:59:14,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 15:59:14,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:14,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 15:59:14,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 15:59:14,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:14,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-11-12 15:59:14,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:14,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:14,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:14,273 INFO L124 PetriNetUnfolderBase]: 273/487 cut-off events. [2024-11-12 15:59:14,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 15:59:14,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 487 events. 273/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1990 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 921. Up to 181 conditions per place. [2024-11-12 15:59:14,282 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2024-11-12 15:59:14,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2024-11-12 15:59:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 15:59:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 15:59:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-11-12 15:59:14,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-12 15:59:14,284 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2024-11-12 15:59:14,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2024-11-12 15:59:14,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 15:59:14,286 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2024-11-12 15:59:14,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2024-11-12 15:59:14,288 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-11-12 15:59:14,288 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2024-11-12 15:59:14,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2024-11-12 15:59:14,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:14,289 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:14,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 15:59:14,290 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:14,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1117686194, now seen corresponding path program 1 times [2024-11-12 15:59:14,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:14,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932555042] [2024-11-12 15:59:14,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:14,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932555042] [2024-11-12 15:59:14,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932555042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:59:14,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:59:14,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 15:59:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448701040] [2024-11-12 15:59:14,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:59:14,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 15:59:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 15:59:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 15:59:14,431 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:14,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-12 15:59:14,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:14,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:14,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:14,582 INFO L124 PetriNetUnfolderBase]: 382/704 cut-off events. [2024-11-12 15:59:14,583 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-11-12 15:59:14,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 704 events. 382/704 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3073 event pairs, 65 based on Foata normal form. 27/727 useless extension candidates. Maximal degree in co-relation 1591. Up to 246 conditions per place. [2024-11-12 15:59:14,588 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2024-11-12 15:59:14,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2024-11-12 15:59:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 15:59:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-12 15:59:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-12 15:59:14,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-12 15:59:14,590 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2024-11-12 15:59:14,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2024-11-12 15:59:14,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-12 15:59:14,595 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2024-11-12 15:59:14,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-12 15:59:14,595 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-11-12 15:59:14,596 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2024-11-12 15:59:14,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-12 15:59:14,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:14,596 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:14,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 15:59:14,596 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:14,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:14,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1000674482, now seen corresponding path program 2 times [2024-11-12 15:59:14,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:14,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882402437] [2024-11-12 15:59:14,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:14,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:14,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:14,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882402437] [2024-11-12 15:59:14,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882402437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:59:14,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:59:14,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 15:59:14,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331836310] [2024-11-12 15:59:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:59:14,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 15:59:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 15:59:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 15:59:14,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:14,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-12 15:59:14,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:14,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:14,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:14,864 INFO L124 PetriNetUnfolderBase]: 328/611 cut-off events. [2024-11-12 15:59:14,864 INFO L125 PetriNetUnfolderBase]: For 971/971 co-relation queries the response was YES. [2024-11-12 15:59:14,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741 conditions, 611 events. 328/611 cut-off events. For 971/971 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2595 event pairs, 65 based on Foata normal form. 45/652 useless extension candidates. Maximal degree in co-relation 1723. Up to 234 conditions per place. [2024-11-12 15:59:14,867 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2024-11-12 15:59:14,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2024-11-12 15:59:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 15:59:14,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-12 15:59:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-11-12 15:59:14,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-11-12 15:59:14,869 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2024-11-12 15:59:14,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2024-11-12 15:59:14,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-12 15:59:14,872 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2024-11-12 15:59:14,873 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-11-12 15:59:14,873 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-11-12 15:59:14,873 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2024-11-12 15:59:14,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-12 15:59:14,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:14,874 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:14,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 15:59:14,874 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:14,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1356857717, now seen corresponding path program 1 times [2024-11-12 15:59:14,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:14,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813391591] [2024-11-12 15:59:14,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:14,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:14,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:14,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813391591] [2024-11-12 15:59:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813391591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:59:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:59:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 15:59:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680862835] [2024-11-12 15:59:14,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:59:14,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 15:59:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:14,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 15:59:14,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 15:59:14,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:14,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-12 15:59:14,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:14,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:14,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:15,160 INFO L124 PetriNetUnfolderBase]: 337/620 cut-off events. [2024-11-12 15:59:15,160 INFO L125 PetriNetUnfolderBase]: For 1649/1649 co-relation queries the response was YES. [2024-11-12 15:59:15,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1946 conditions, 620 events. 337/620 cut-off events. For 1649/1649 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2632 event pairs, 74 based on Foata normal form. 18/634 useless extension candidates. Maximal degree in co-relation 1923. Up to 237 conditions per place. [2024-11-12 15:59:15,163 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2024-11-12 15:59:15,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2024-11-12 15:59:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 15:59:15,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 15:59:15,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-11-12 15:59:15,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2024-11-12 15:59:15,165 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2024-11-12 15:59:15,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2024-11-12 15:59:15,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-12 15:59:15,170 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2024-11-12 15:59:15,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-12 15:59:15,171 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-11-12 15:59:15,171 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2024-11-12 15:59:15,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-12 15:59:15,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:15,171 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:15,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 15:59:15,172 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:15,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash 392343623, now seen corresponding path program 2 times [2024-11-12 15:59:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232726595] [2024-11-12 15:59:15,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:15,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:15,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232726595] [2024-11-12 15:59:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232726595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:59:15,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:59:15,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 15:59:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445581757] [2024-11-12 15:59:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:59:15,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 15:59:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 15:59:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 15:59:15,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:15,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-12 15:59:15,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:15,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:15,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:15,459 INFO L124 PetriNetUnfolderBase]: 445/807 cut-off events. [2024-11-12 15:59:15,460 INFO L125 PetriNetUnfolderBase]: For 2473/2473 co-relation queries the response was YES. [2024-11-12 15:59:15,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 807 events. 445/807 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3481 event pairs, 59 based on Foata normal form. 27/828 useless extension candidates. Maximal degree in co-relation 2610. Up to 151 conditions per place. [2024-11-12 15:59:15,463 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 23 changer transitions 30/101 dead transitions. [2024-11-12 15:59:15,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 742 flow [2024-11-12 15:59:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 15:59:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 15:59:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-11-12 15:59:15,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5360501567398119 [2024-11-12 15:59:15,465 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 171 transitions. [2024-11-12 15:59:15,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 742 flow [2024-11-12 15:59:15,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 688 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-11-12 15:59:15,470 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 393 flow [2024-11-12 15:59:15,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=393, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-11-12 15:59:15,471 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-11-12 15:59:15,471 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 393 flow [2024-11-12 15:59:15,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2024-11-12 15:59:15,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:15,471 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:15,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 15:59:15,472 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:15,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:15,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1383133169, now seen corresponding path program 1 times [2024-11-12 15:59:15,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:15,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820860541] [2024-11-12 15:59:15,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:15,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820860541] [2024-11-12 15:59:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820860541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:59:15,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:59:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 15:59:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012425792] [2024-11-12 15:59:15,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:59:15,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 15:59:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 15:59:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-12 15:59:15,565 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:15,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-12 15:59:15,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:15,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:15,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:15,750 INFO L124 PetriNetUnfolderBase]: 463/854 cut-off events. [2024-11-12 15:59:15,750 INFO L125 PetriNetUnfolderBase]: For 4628/4628 co-relation queries the response was YES. [2024-11-12 15:59:15,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 854 events. 463/854 cut-off events. For 4628/4628 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3786 event pairs, 137 based on Foata normal form. 27/877 useless extension candidates. Maximal degree in co-relation 3207. Up to 486 conditions per place. [2024-11-12 15:59:15,754 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 52 selfloop transitions, 13 changer transitions 31/100 dead transitions. [2024-11-12 15:59:15,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 885 flow [2024-11-12 15:59:15,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 15:59:15,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-12 15:59:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-11-12 15:59:15,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2024-11-12 15:59:15,756 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 393 flow. Second operand 11 states and 168 transitions. [2024-11-12 15:59:15,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 885 flow [2024-11-12 15:59:15,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 100 transitions, 822 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-11-12 15:59:15,763 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 420 flow [2024-11-12 15:59:15,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=420, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2024-11-12 15:59:15,764 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-11-12 15:59:15,764 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 420 flow [2024-11-12 15:59:15,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-12 15:59:15,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:15,765 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:15,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 15:59:15,765 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:15,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1985942713, now seen corresponding path program 2 times [2024-11-12 15:59:15,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:15,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759712646] [2024-11-12 15:59:15,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:15,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:15,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759712646] [2024-11-12 15:59:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759712646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 15:59:15,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 15:59:15,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 15:59:15,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768925149] [2024-11-12 15:59:15,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 15:59:15,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 15:59:15,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:15,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 15:59:15,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 15:59:15,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:15,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 420 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-12 15:59:15,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:15,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:15,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:16,161 INFO L124 PetriNetUnfolderBase]: 616/1148 cut-off events. [2024-11-12 15:59:16,162 INFO L125 PetriNetUnfolderBase]: For 8617/8617 co-relation queries the response was YES. [2024-11-12 15:59:16,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 1148 events. 616/1148 cut-off events. For 8617/8617 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5441 event pairs, 110 based on Foata normal form. 27/1171 useless extension candidates. Maximal degree in co-relation 4662. Up to 411 conditions per place. [2024-11-12 15:59:16,169 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 72 selfloop transitions, 23 changer transitions 31/130 dead transitions. [2024-11-12 15:59:16,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 130 transitions, 1208 flow [2024-11-12 15:59:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 15:59:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-12 15:59:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2024-11-12 15:59:16,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-12 15:59:16,171 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 420 flow. Second operand 15 states and 232 transitions. [2024-11-12 15:59:16,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 130 transitions, 1208 flow [2024-11-12 15:59:16,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 1070 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-11-12 15:59:16,184 INFO L231 Difference]: Finished difference. Result has 84 places, 54 transitions, 526 flow [2024-11-12 15:59:16,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=526, PETRI_PLACES=84, PETRI_TRANSITIONS=54} [2024-11-12 15:59:16,184 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-11-12 15:59:16,185 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 54 transitions, 526 flow [2024-11-12 15:59:16,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-12 15:59:16,185 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:16,185 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:16,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 15:59:16,186 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:16,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:16,186 INFO L85 PathProgramCache]: Analyzing trace with hash 945130439, now seen corresponding path program 3 times [2024-11-12 15:59:16,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327064846] [2024-11-12 15:59:16,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:16,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:16,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:16,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327064846] [2024-11-12 15:59:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327064846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:16,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636142607] [2024-11-12 15:59:16,275 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 15:59:16,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:16,280 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) [2024-11-12 15:59:16,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 15:59:16,333 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-12 15:59:16,333 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 15:59:16,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 15:59:16,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:16,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636142607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:16,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:16,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-12 15:59:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204899628] [2024-11-12 15:59:16,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:16,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 15:59:16,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 15:59:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-12 15:59:16,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:16,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 54 transitions, 526 flow. Second operand has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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) [2024-11-12 15:59:16,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:16,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:16,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:17,029 INFO L124 PetriNetUnfolderBase]: 805/1454 cut-off events. [2024-11-12 15:59:17,029 INFO L125 PetriNetUnfolderBase]: For 16248/16248 co-relation queries the response was YES. [2024-11-12 15:59:17,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 1454 events. 805/1454 cut-off events. For 16248/16248 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6887 event pairs, 46 based on Foata normal form. 81/1531 useless extension candidates. Maximal degree in co-relation 6648. Up to 234 conditions per place. [2024-11-12 15:59:17,036 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 79 selfloop transitions, 45 changer transitions 83/211 dead transitions. [2024-11-12 15:59:17,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 211 transitions, 2200 flow [2024-11-12 15:59:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-12 15:59:17,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-12 15:59:17,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 399 transitions. [2024-11-12 15:59:17,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291777188328912 [2024-11-12 15:59:17,038 INFO L175 Difference]: Start difference. First operand has 84 places, 54 transitions, 526 flow. Second operand 26 states and 399 transitions. [2024-11-12 15:59:17,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 211 transitions, 2200 flow [2024-11-12 15:59:17,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 211 transitions, 1996 flow, removed 86 selfloop flow, removed 10 redundant places. [2024-11-12 15:59:17,054 INFO L231 Difference]: Finished difference. Result has 113 places, 67 transitions, 857 flow [2024-11-12 15:59:17,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=857, PETRI_PLACES=113, PETRI_TRANSITIONS=67} [2024-11-12 15:59:17,055 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-11-12 15:59:17,055 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 67 transitions, 857 flow [2024-11-12 15:59:17,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.071428571428571) internal successors, (141), 14 states have internal predecessors, (141), 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) [2024-11-12 15:59:17,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:17,055 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:17,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 15:59:17,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:17,257 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:17,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:17,258 INFO L85 PathProgramCache]: Analyzing trace with hash 142761349, now seen corresponding path program 1 times [2024-11-12 15:59:17,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:17,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000491983] [2024-11-12 15:59:17,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:17,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:17,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:17,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000491983] [2024-11-12 15:59:17,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000491983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:17,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980439030] [2024-11-12 15:59:17,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:17,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:17,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:17,367 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) [2024-11-12 15:59:17,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 15:59:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:17,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-12 15:59:17,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:17,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:17,478 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980439030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:17,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:17,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-12 15:59:17,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955649240] [2024-11-12 15:59:17,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:17,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-12 15:59:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-12 15:59:17,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-12 15:59:17,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:17,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 67 transitions, 857 flow. Second operand has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 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) [2024-11-12 15:59:17,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:17,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:17,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:18,301 INFO L124 PetriNetUnfolderBase]: 1255/2254 cut-off events. [2024-11-12 15:59:18,302 INFO L125 PetriNetUnfolderBase]: For 57650/57650 co-relation queries the response was YES. [2024-11-12 15:59:18,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13061 conditions, 2254 events. 1255/2254 cut-off events. For 57650/57650 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10541 event pairs, 77 based on Foata normal form. 63/2311 useless extension candidates. Maximal degree in co-relation 13011. Up to 420 conditions per place. [2024-11-12 15:59:18,318 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 96 selfloop transitions, 73 changer transitions 86/259 dead transitions. [2024-11-12 15:59:18,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 259 transitions, 3703 flow [2024-11-12 15:59:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-12 15:59:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-12 15:59:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 445 transitions. [2024-11-12 15:59:18,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291319857312723 [2024-11-12 15:59:18,320 INFO L175 Difference]: Start difference. First operand has 113 places, 67 transitions, 857 flow. Second operand 29 states and 445 transitions. [2024-11-12 15:59:18,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 259 transitions, 3703 flow [2024-11-12 15:59:18,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 259 transitions, 3059 flow, removed 298 selfloop flow, removed 18 redundant places. [2024-11-12 15:59:18,358 INFO L231 Difference]: Finished difference. Result has 135 places, 99 transitions, 1444 flow [2024-11-12 15:59:18,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1444, PETRI_PLACES=135, PETRI_TRANSITIONS=99} [2024-11-12 15:59:18,359 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-11-12 15:59:18,359 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 99 transitions, 1444 flow [2024-11-12 15:59:18,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.117647058823529) internal successors, (172), 17 states have internal predecessors, (172), 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) [2024-11-12 15:59:18,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:18,360 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:18,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 15:59:18,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-12 15:59:18,561 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:18,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash 932350730, now seen corresponding path program 2 times [2024-11-12 15:59:18,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:18,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631031298] [2024-11-12 15:59:18,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:18,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 15:59:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631031298] [2024-11-12 15:59:18,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631031298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492832298] [2024-11-12 15:59:18,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 15:59:18,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:18,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:18,737 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) [2024-11-12 15:59:18,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 15:59:18,800 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 15:59:18,800 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 15:59:18,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 15:59:18,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 15:59:18,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 15:59:19,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492832298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:19,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:19,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-12 15:59:19,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292328514] [2024-11-12 15:59:19,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:19,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 15:59:19,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:19,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 15:59:19,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2024-11-12 15:59:19,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:19,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 99 transitions, 1444 flow. Second operand has 25 states, 25 states have (on average 10.24) internal successors, (256), 25 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) [2024-11-12 15:59:19,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:19,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:19,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:20,137 INFO L124 PetriNetUnfolderBase]: 1561/2921 cut-off events. [2024-11-12 15:59:20,138 INFO L125 PetriNetUnfolderBase]: For 142863/142863 co-relation queries the response was YES. [2024-11-12 15:59:20,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20333 conditions, 2921 events. 1561/2921 cut-off events. For 142863/142863 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14049 event pairs, 455 based on Foata normal form. 117/3034 useless extension candidates. Maximal degree in co-relation 20273. Up to 1656 conditions per place. [2024-11-12 15:59:20,157 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 152 selfloop transitions, 35 changer transitions 133/324 dead transitions. [2024-11-12 15:59:20,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 324 transitions, 5846 flow [2024-11-12 15:59:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-12 15:59:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-12 15:59:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 552 transitions. [2024-11-12 15:59:20,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5144454799627214 [2024-11-12 15:59:20,159 INFO L175 Difference]: Start difference. First operand has 135 places, 99 transitions, 1444 flow. Second operand 37 states and 552 transitions. [2024-11-12 15:59:20,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 324 transitions, 5846 flow [2024-11-12 15:59:20,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 324 transitions, 4754 flow, removed 523 selfloop flow, removed 14 redundant places. [2024-11-12 15:59:20,236 INFO L231 Difference]: Finished difference. Result has 179 places, 121 transitions, 1830 flow [2024-11-12 15:59:20,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1830, PETRI_PLACES=179, PETRI_TRANSITIONS=121} [2024-11-12 15:59:20,237 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-11-12 15:59:20,237 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 121 transitions, 1830 flow [2024-11-12 15:59:20,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 25 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) [2024-11-12 15:59:20,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:20,238 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:20,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 15:59:20,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:20,438 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:20,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash 199201240, now seen corresponding path program 3 times [2024-11-12 15:59:20,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:20,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839838297] [2024-11-12 15:59:20,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:20,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:59:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:20,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839838297] [2024-11-12 15:59:20,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839838297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:20,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856435869] [2024-11-12 15:59:20,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 15:59:20,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:20,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:20,606 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) [2024-11-12 15:59:20,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 15:59:20,656 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-12 15:59:20,656 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 15:59:20,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 15:59:20,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:59:20,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:20,979 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:59:20,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856435869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:20,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:20,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-12 15:59:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367467022] [2024-11-12 15:59:20,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:20,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-12 15:59:20,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-12 15:59:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-12 15:59:20,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:20,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 121 transitions, 1830 flow. Second operand has 25 states, 25 states have (on average 10.24) internal successors, (256), 25 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) [2024-11-12 15:59:20,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:20,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:20,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:22,340 INFO L124 PetriNetUnfolderBase]: 1957/3807 cut-off events. [2024-11-12 15:59:22,340 INFO L125 PetriNetUnfolderBase]: For 291077/291077 co-relation queries the response was YES. [2024-11-12 15:59:22,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30204 conditions, 3807 events. 1957/3807 cut-off events. For 291077/291077 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 20900 event pairs, 266 based on Foata normal form. 117/3920 useless extension candidates. Maximal degree in co-relation 30122. Up to 1084 conditions per place. [2024-11-12 15:59:22,459 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 152 selfloop transitions, 106 changer transitions 147/409 dead transitions. [2024-11-12 15:59:22,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 409 transitions, 8154 flow [2024-11-12 15:59:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-12 15:59:22,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-12 15:59:22,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 659 transitions. [2024-11-12 15:59:22,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5164576802507836 [2024-11-12 15:59:22,462 INFO L175 Difference]: Start difference. First operand has 179 places, 121 transitions, 1830 flow. Second operand 44 states and 659 transitions. [2024-11-12 15:59:22,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 409 transitions, 8154 flow [2024-11-12 15:59:22,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 409 transitions, 6900 flow, removed 614 selfloop flow, removed 20 redundant places. [2024-11-12 15:59:22,701 INFO L231 Difference]: Finished difference. Result has 215 places, 166 transitions, 2856 flow [2024-11-12 15:59:22,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2856, PETRI_PLACES=215, PETRI_TRANSITIONS=166} [2024-11-12 15:59:22,702 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-11-12 15:59:22,702 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 166 transitions, 2856 flow [2024-11-12 15:59:22,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.24) internal successors, (256), 25 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) [2024-11-12 15:59:22,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:22,704 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:22,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 15:59:22,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:22,905 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:22,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1615059642, now seen corresponding path program 4 times [2024-11-12 15:59:22,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:22,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770646839] [2024-11-12 15:59:22,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:22,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:59:23,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:23,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770646839] [2024-11-12 15:59:23,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770646839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835434443] [2024-11-12 15:59:23,224 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 15:59:23,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:23,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:23,226 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) [2024-11-12 15:59:23,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 15:59:23,274 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 15:59:23,275 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 15:59:23,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-12 15:59:23,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:23,354 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:59:23,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 15:59:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835434443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:23,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:23,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-12 15:59:23,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422666122] [2024-11-12 15:59:23,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:23,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 15:59:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:23,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 15:59:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2024-11-12 15:59:23,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:23,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 166 transitions, 2856 flow. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 26 states have internal predecessors, (267), 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) [2024-11-12 15:59:23,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:23,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:23,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:25,554 INFO L124 PetriNetUnfolderBase]: 2866/5558 cut-off events. [2024-11-12 15:59:25,554 INFO L125 PetriNetUnfolderBase]: For 622713/622713 co-relation queries the response was YES. [2024-11-12 15:59:25,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50004 conditions, 5558 events. 2866/5558 cut-off events. For 622713/622713 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 33586 event pairs, 90 based on Foata normal form. 126/5680 useless extension candidates. Maximal degree in co-relation 49909. Up to 1287 conditions per place. [2024-11-12 15:59:25,607 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 153 selfloop transitions, 208 changer transitions 166/531 dead transitions. [2024-11-12 15:59:25,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 531 transitions, 12234 flow [2024-11-12 15:59:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-12 15:59:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-12 15:59:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 787 transitions. [2024-11-12 15:59:25,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5218832891246684 [2024-11-12 15:59:25,610 INFO L175 Difference]: Start difference. First operand has 215 places, 166 transitions, 2856 flow. Second operand 52 states and 787 transitions. [2024-11-12 15:59:25,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 531 transitions, 12234 flow [2024-11-12 15:59:26,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 531 transitions, 10405 flow, removed 886 selfloop flow, removed 26 redundant places. [2024-11-12 15:59:26,388 INFO L231 Difference]: Finished difference. Result has 259 places, 240 transitions, 4781 flow [2024-11-12 15:59:26,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=4781, PETRI_PLACES=259, PETRI_TRANSITIONS=240} [2024-11-12 15:59:26,389 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-11-12 15:59:26,389 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 240 transitions, 4781 flow [2024-11-12 15:59:26,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 26 states have internal predecessors, (267), 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) [2024-11-12 15:59:26,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:26,389 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:26,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 15:59:26,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-12 15:59:26,594 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:26,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash 964183297, now seen corresponding path program 5 times [2024-11-12 15:59:26,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:26,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795377311] [2024-11-12 15:59:26,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:26,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 15:59:26,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:26,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795377311] [2024-11-12 15:59:26,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795377311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:26,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843141620] [2024-11-12 15:59:26,732 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 15:59:26,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:26,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:26,734 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) [2024-11-12 15:59:26,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 15:59:26,781 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-12 15:59:26,781 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 15:59:26,782 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 15:59:26,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 15:59:26,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 15:59:27,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843141620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:27,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:27,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2024-11-12 15:59:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48427860] [2024-11-12 15:59:27,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:27,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-12 15:59:27,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-12 15:59:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2024-11-12 15:59:27,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:27,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 240 transitions, 4781 flow. Second operand has 27 states, 27 states have (on average 10.185185185185185) internal successors, (275), 27 states have internal predecessors, (275), 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) [2024-11-12 15:59:27,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:27,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:27,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:29,569 INFO L124 PetriNetUnfolderBase]: 3667/7097 cut-off events. [2024-11-12 15:59:29,570 INFO L125 PetriNetUnfolderBase]: For 1346908/1346908 co-relation queries the response was YES. [2024-11-12 15:59:29,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79523 conditions, 7097 events. 3667/7097 cut-off events. For 1346908/1346908 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 42847 event pairs, 47 based on Foata normal form. 135/7226 useless extension candidates. Maximal degree in co-relation 79409. Up to 1644 conditions per place. [2024-11-12 15:59:29,637 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 194 selfloop transitions, 271 changer transitions 183/652 dead transitions. [2024-11-12 15:59:29,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 652 transitions, 19400 flow [2024-11-12 15:59:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-12 15:59:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2024-11-12 15:59:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 933 transitions. [2024-11-12 15:59:29,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5274166195590729 [2024-11-12 15:59:29,645 INFO L175 Difference]: Start difference. First operand has 259 places, 240 transitions, 4781 flow. Second operand 61 states and 933 transitions. [2024-11-12 15:59:29,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 652 transitions, 19400 flow [2024-11-12 15:59:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 652 transitions, 14357 flow, removed 2453 selfloop flow, removed 29 redundant places. [2024-11-12 15:59:31,223 INFO L231 Difference]: Finished difference. Result has 317 places, 301 transitions, 6766 flow [2024-11-12 15:59:31,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3336, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=6766, PETRI_PLACES=317, PETRI_TRANSITIONS=301} [2024-11-12 15:59:31,224 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-11-12 15:59:31,224 INFO L471 AbstractCegarLoop]: Abstraction has has 317 places, 301 transitions, 6766 flow [2024-11-12 15:59:31,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.185185185185185) internal successors, (275), 27 states have internal predecessors, (275), 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) [2024-11-12 15:59:31,225 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:31,225 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:31,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 15:59:31,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:31,426 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:31,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1782150093, now seen corresponding path program 6 times [2024-11-12 15:59:31,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:31,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395711008] [2024-11-12 15:59:31,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:31,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:31,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395711008] [2024-11-12 15:59:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395711008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042457212] [2024-11-12 15:59:31,816 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-12 15:59:31,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:31,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:31,821 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) [2024-11-12 15:59:31,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 15:59:31,893 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-12 15:59:31,893 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 15:59:31,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-12 15:59:31,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:31,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:32,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042457212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:32,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:32,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-11-12 15:59:32,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379032556] [2024-11-12 15:59:32,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:32,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-12 15:59:32,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-12 15:59:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2024-11-12 15:59:32,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:32,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 301 transitions, 6766 flow. Second operand has 46 states, 46 states have (on average 10.021739130434783) internal successors, (461), 46 states have internal predecessors, (461), 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) [2024-11-12 15:59:32,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:32,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:32,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:37,787 INFO L124 PetriNetUnfolderBase]: 5125/9766 cut-off events. [2024-11-12 15:59:37,788 INFO L125 PetriNetUnfolderBase]: For 2712910/2712910 co-relation queries the response was YES. [2024-11-12 15:59:37,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127307 conditions, 9766 events. 5125/9766 cut-off events. For 2712910/2712910 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 55962 event pairs, 46 based on Foata normal form. 252/10014 useless extension candidates. Maximal degree in co-relation 127165. Up to 2229 conditions per place. [2024-11-12 15:59:37,887 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 315 selfloop transitions, 367 changer transitions 327/1013 dead transitions. [2024-11-12 15:59:37,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1013 transitions, 34262 flow [2024-11-12 15:59:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-12 15:59:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-11-12 15:59:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1615 transitions. [2024-11-12 15:59:37,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5253741054001301 [2024-11-12 15:59:37,890 INFO L175 Difference]: Start difference. First operand has 317 places, 301 transitions, 6766 flow. Second operand 106 states and 1615 transitions. [2024-11-12 15:59:37,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1013 transitions, 34262 flow [2024-11-12 15:59:40,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1013 transitions, 27116 flow, removed 3531 selfloop flow, removed 27 redundant places. [2024-11-12 15:59:40,429 INFO L231 Difference]: Finished difference. Result has 445 places, 397 transitions, 10432 flow [2024-11-12 15:59:40,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4670, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=10432, PETRI_PLACES=445, PETRI_TRANSITIONS=397} [2024-11-12 15:59:40,430 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-11-12 15:59:40,430 INFO L471 AbstractCegarLoop]: Abstraction has has 445 places, 397 transitions, 10432 flow [2024-11-12 15:59:40,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 10.021739130434783) internal successors, (461), 46 states have internal predecessors, (461), 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) [2024-11-12 15:59:40,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:40,431 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:40,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 15:59:40,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:40,635 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:40,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1527530621, now seen corresponding path program 7 times [2024-11-12 15:59:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388507179] [2024-11-12 15:59:40,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:41,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388507179] [2024-11-12 15:59:41,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388507179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:41,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200881755] [2024-11-12 15:59:41,467 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-12 15:59:41,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:41,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:41,469 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) [2024-11-12 15:59:41,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 15:59:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:41,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-12 15:59:41,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:41,677 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 840 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200881755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:42,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 80 [2024-11-12 15:59:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671483543] [2024-11-12 15:59:42,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:42,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-12 15:59:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-12 15:59:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=4979, Unknown=0, NotChecked=0, Total=6480 [2024-11-12 15:59:42,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:42,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 397 transitions, 10432 flow. Second operand has 81 states, 81 states have (on average 10.024691358024691) internal successors, (812), 81 states have internal predecessors, (812), 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) [2024-11-12 15:59:42,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:42,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:42,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 15:59:48,505 INFO L124 PetriNetUnfolderBase]: 5593/10627 cut-off events. [2024-11-12 15:59:48,505 INFO L125 PetriNetUnfolderBase]: For 4358310/4358310 co-relation queries the response was YES. [2024-11-12 15:59:48,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150150 conditions, 10627 events. 5593/10627 cut-off events. For 4358310/4358310 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 60191 event pairs, 65 based on Foata normal form. 36/10657 useless extension candidates. Maximal degree in co-relation 149959. Up to 2397 conditions per place. [2024-11-12 15:59:48,646 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 312 selfloop transitions, 419 changer transitions 181/916 dead transitions. [2024-11-12 15:59:48,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 916 transitions, 31675 flow [2024-11-12 15:59:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-12 15:59:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2024-11-12 15:59:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 1267 transitions. [2024-11-12 15:59:48,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5201149425287356 [2024-11-12 15:59:48,650 INFO L175 Difference]: Start difference. First operand has 445 places, 397 transitions, 10432 flow. Second operand 84 states and 1267 transitions. [2024-11-12 15:59:48,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 916 transitions, 31675 flow [2024-11-12 15:59:57,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 916 transitions, 22817 flow, removed 4329 selfloop flow, removed 44 redundant places. [2024-11-12 15:59:57,041 INFO L231 Difference]: Finished difference. Result has 473 places, 455 transitions, 8840 flow [2024-11-12 15:59:57,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6386, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=8840, PETRI_PLACES=473, PETRI_TRANSITIONS=455} [2024-11-12 15:59:57,042 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 443 predicate places. [2024-11-12 15:59:57,042 INFO L471 AbstractCegarLoop]: Abstraction has has 473 places, 455 transitions, 8840 flow [2024-11-12 15:59:57,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 10.024691358024691) internal successors, (812), 81 states have internal predecessors, (812), 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) [2024-11-12 15:59:57,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 15:59:57,042 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 15:59:57,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 15:59:57,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 15:59:57,243 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 15:59:57,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 15:59:57,244 INFO L85 PathProgramCache]: Analyzing trace with hash -89081450, now seen corresponding path program 8 times [2024-11-12 15:59:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 15:59:57,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219233156] [2024-11-12 15:59:57,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 15:59:57,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 15:59:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 15:59:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 15:59:58,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219233156] [2024-11-12 15:59:58,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219233156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 15:59:58,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348141352] [2024-11-12 15:59:58,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 15:59:58,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 15:59:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 15:59:58,070 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) [2024-11-12 15:59:58,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 15:59:58,132 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-12 15:59:58,132 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 15:59:58,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-12 15:59:58,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 15:59:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 1 proven. 917 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:58,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 15:59:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 15:59:58,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348141352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 15:59:58,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 15:59:58,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2024-11-12 15:59:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285015325] [2024-11-12 15:59:58,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 15:59:58,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-12 15:59:58,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 15:59:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-12 15:59:58,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2024-11-12 15:59:58,776 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 15:59:58,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 455 transitions, 8840 flow. Second operand has 46 states, 46 states have (on average 9.978260869565217) internal successors, (459), 46 states have internal predecessors, (459), 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) [2024-11-12 15:59:58,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 15:59:58,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 15:59:58,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:00:04,569 INFO L124 PetriNetUnfolderBase]: 5629/10725 cut-off events. [2024-11-12 16:00:04,570 INFO L125 PetriNetUnfolderBase]: For 3455122/3455122 co-relation queries the response was YES. [2024-11-12 16:00:04,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130074 conditions, 10725 events. 5629/10725 cut-off events. For 3455122/3455122 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 60737 event pairs, 38 based on Foata normal form. 27/10748 useless extension candidates. Maximal degree in co-relation 129893. Up to 2427 conditions per place. [2024-11-12 16:00:04,702 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 324 selfloop transitions, 428 changer transitions 183/939 dead transitions. [2024-11-12 16:00:04,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 939 transitions, 25084 flow [2024-11-12 16:00:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-12 16:00:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-11-12 16:00:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1323 transitions. [2024-11-12 16:00:04,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5184169278996865 [2024-11-12 16:00:04,705 INFO L175 Difference]: Start difference. First operand has 473 places, 455 transitions, 8840 flow. Second operand 88 states and 1323 transitions. [2024-11-12 16:00:04,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 939 transitions, 25084 flow [2024-11-12 16:00:09,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 939 transitions, 23092 flow, removed 697 selfloop flow, removed 45 redundant places. [2024-11-12 16:00:09,628 INFO L231 Difference]: Finished difference. Result has 517 places, 462 transitions, 8810 flow [2024-11-12 16:00:09,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7430, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=8810, PETRI_PLACES=517, PETRI_TRANSITIONS=462} [2024-11-12 16:00:09,629 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 487 predicate places. [2024-11-12 16:00:09,629 INFO L471 AbstractCegarLoop]: Abstraction has has 517 places, 462 transitions, 8810 flow [2024-11-12 16:00:09,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 9.978260869565217) internal successors, (459), 46 states have internal predecessors, (459), 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) [2024-11-12 16:00:09,630 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:00:09,630 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:00:09,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 16:00:09,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 16:00:09,835 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:00:09,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:00:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1078339184, now seen corresponding path program 9 times [2024-11-12 16:00:09,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:00:09,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336525051] [2024-11-12 16:00:09,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:00:09,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:00:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:00:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:10,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:00:10,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336525051] [2024-11-12 16:00:10,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336525051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:00:10,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168938153] [2024-11-12 16:00:10,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-12 16:00:10,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:00:10,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:00:10,646 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:00:10,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 16:00:10,734 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-12 16:00:10,735 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:00:10,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-12 16:00:10,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:00:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:10,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:00:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:11,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168938153] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:00:11,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:00:11,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 44 [2024-11-12 16:00:11,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037647945] [2024-11-12 16:00:11,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:00:11,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-12 16:00:11,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:00:11,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-12 16:00:11,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2024-11-12 16:00:11,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 16:00:11,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 462 transitions, 8810 flow. Second operand has 45 states, 45 states have (on average 9.955555555555556) internal successors, (448), 45 states have internal predecessors, (448), 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) [2024-11-12 16:00:11,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:00:11,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 16:00:11,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:00:16,976 INFO L124 PetriNetUnfolderBase]: 5800/11054 cut-off events. [2024-11-12 16:00:16,976 INFO L125 PetriNetUnfolderBase]: For 3603165/3603165 co-relation queries the response was YES. [2024-11-12 16:00:17,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135647 conditions, 11054 events. 5800/11054 cut-off events. For 3603165/3603165 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 62696 event pairs, 65 based on Foata normal form. 27/11075 useless extension candidates. Maximal degree in co-relation 135464. Up to 2505 conditions per place. [2024-11-12 16:00:17,120 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 333 selfloop transitions, 436 changer transitions 175/948 dead transitions. [2024-11-12 16:00:17,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 948 transitions, 25558 flow [2024-11-12 16:00:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-12 16:00:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-11-12 16:00:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 1313 transitions. [2024-11-12 16:00:17,122 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5204122076892588 [2024-11-12 16:00:17,123 INFO L175 Difference]: Start difference. First operand has 517 places, 462 transitions, 8810 flow. Second operand 87 states and 1313 transitions. [2024-11-12 16:00:17,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 948 transitions, 25558 flow [2024-11-12 16:00:22,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 948 transitions, 24087 flow, removed 311 selfloop flow, removed 84 redundant places. [2024-11-12 16:00:22,695 INFO L231 Difference]: Finished difference. Result has 523 places, 470 transitions, 9234 flow [2024-11-12 16:00:22,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7541, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=9234, PETRI_PLACES=523, PETRI_TRANSITIONS=470} [2024-11-12 16:00:22,696 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 493 predicate places. [2024-11-12 16:00:22,696 INFO L471 AbstractCegarLoop]: Abstraction has has 523 places, 470 transitions, 9234 flow [2024-11-12 16:00:22,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 9.955555555555556) internal successors, (448), 45 states have internal predecessors, (448), 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) [2024-11-12 16:00:22,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:00:22,697 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:00:22,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 16:00:22,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 16:00:22,902 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:00:22,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:00:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash -639127024, now seen corresponding path program 10 times [2024-11-12 16:00:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:00:22,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134387140] [2024-11-12 16:00:22,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:00:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:00:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:00:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:23,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:00:23,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134387140] [2024-11-12 16:00:23,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134387140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:00:23,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882600875] [2024-11-12 16:00:23,693 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-12 16:00:23,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:00:23,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:00:23,695 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:00:23,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 16:00:23,763 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-12 16:00:23,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:00:23,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-12 16:00:23,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:00:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:23,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:00:24,401 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:24,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882600875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:00:24,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:00:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2024-11-12 16:00:24,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049050737] [2024-11-12 16:00:24,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:00:24,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-12 16:00:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:00:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-12 16:00:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=1599, Unknown=0, NotChecked=0, Total=2070 [2024-11-12 16:00:24,422 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 16:00:24,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 470 transitions, 9234 flow. Second operand has 46 states, 46 states have (on average 9.956521739130435) internal successors, (458), 46 states have internal predecessors, (458), 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) [2024-11-12 16:00:24,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:00:24,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 16:00:24,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:00:30,297 INFO L124 PetriNetUnfolderBase]: 5737/10944 cut-off events. [2024-11-12 16:00:30,298 INFO L125 PetriNetUnfolderBase]: For 3748494/3748494 co-relation queries the response was YES. [2024-11-12 16:00:30,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135858 conditions, 10944 events. 5737/10944 cut-off events. For 3748494/3748494 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 62063 event pairs, 38 based on Foata normal form. 45/10985 useless extension candidates. Maximal degree in co-relation 135672. Up to 2475 conditions per place. [2024-11-12 16:00:30,498 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 323 selfloop transitions, 439 changer transitions 187/953 dead transitions. [2024-11-12 16:00:30,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 953 transitions, 26089 flow [2024-11-12 16:00:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-12 16:00:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2024-11-12 16:00:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1325 transitions. [2024-11-12 16:00:30,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5192006269592476 [2024-11-12 16:00:30,501 INFO L175 Difference]: Start difference. First operand has 523 places, 470 transitions, 9234 flow. Second operand 88 states and 1325 transitions. [2024-11-12 16:00:30,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 953 transitions, 26089 flow [2024-11-12 16:00:36,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 953 transitions, 24133 flow, removed 549 selfloop flow, removed 84 redundant places. [2024-11-12 16:00:36,511 INFO L231 Difference]: Finished difference. Result has 528 places, 471 transitions, 8914 flow [2024-11-12 16:00:36,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7840, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=8914, PETRI_PLACES=528, PETRI_TRANSITIONS=471} [2024-11-12 16:00:36,512 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 498 predicate places. [2024-11-12 16:00:36,512 INFO L471 AbstractCegarLoop]: Abstraction has has 528 places, 471 transitions, 8914 flow [2024-11-12 16:00:36,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 9.956521739130435) internal successors, (458), 46 states have internal predecessors, (458), 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) [2024-11-12 16:00:36,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 16:00:36,513 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 16:00:36,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-12 16:00:36,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:00:36,717 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-12 16:00:36,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 16:00:36,718 INFO L85 PathProgramCache]: Analyzing trace with hash 209823458, now seen corresponding path program 11 times [2024-11-12 16:00:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 16:00:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840321355] [2024-11-12 16:00:36,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 16:00:36,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 16:00:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 16:00:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 0 proven. 965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:37,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 16:00:37,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840321355] [2024-11-12 16:00:37,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840321355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 16:00:37,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103552356] [2024-11-12 16:00:37,473 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-12 16:00:37,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 16:00:37,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 16:00:37,474 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 16:00:37,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 16:00:37,542 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-12 16:00:37,542 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 16:00:37,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-12 16:00:37,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 16:00:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 0 proven. 965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:37,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 16:00:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 0 proven. 965 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 16:00:38,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103552356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 16:00:38,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 16:00:38,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 86 [2024-11-12 16:00:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019199261] [2024-11-12 16:00:38,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 16:00:38,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-12 16:00:38,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 16:00:38,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-12 16:00:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1740, Invalid=5742, Unknown=0, NotChecked=0, Total=7482 [2024-11-12 16:00:38,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-12 16:00:38,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 471 transitions, 8914 flow. Second operand has 87 states, 87 states have (on average 10.022988505747126) internal successors, (872), 87 states have internal predecessors, (872), 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) [2024-11-12 16:00:38,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 16:00:38,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-12 16:00:38,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 16:00:44,649 INFO L124 PetriNetUnfolderBase]: 5872/11141 cut-off events. [2024-11-12 16:00:44,650 INFO L125 PetriNetUnfolderBase]: For 3843513/3843513 co-relation queries the response was YES. [2024-11-12 16:00:44,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139724 conditions, 11141 events. 5872/11141 cut-off events. For 3843513/3843513 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 62927 event pairs, 100 based on Foata normal form. 36/11173 useless extension candidates. Maximal degree in co-relation 139538. Up to 2511 conditions per place. [2024-11-12 16:00:44,803 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 345 selfloop transitions, 440 changer transitions 197/986 dead transitions. [2024-11-12 16:00:44,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 986 transitions, 27297 flow [2024-11-12 16:00:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-12 16:00:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2024-11-12 16:00:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 1387 transitions. [2024-11-12 16:00:44,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5198650674662668 [2024-11-12 16:00:44,806 INFO L175 Difference]: Start difference. First operand has 528 places, 471 transitions, 8914 flow. Second operand 92 states and 1387 transitions. [2024-11-12 16:00:44,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 986 transitions, 27297 flow