./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f 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/weaver/mult-flipped-dist.wvr.c -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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:14:56,620 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:14:56,698 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:14:56,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:14:56,706 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:14:56,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:14:56,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:14:56,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:14:56,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:14:56,740 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:14:56,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:14:56,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:14:56,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:14:56,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:14:56,744 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:14:56,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:14:56,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:14:56,746 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:14:56,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:14:56,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:14:56,749 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:14:56,749 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:14:56,749 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:14:56,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:14:56,750 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:14:56,750 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:14:56,750 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:14:56,751 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:14:56,751 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:14:56,751 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:14:56,751 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:14:56,751 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:14:56,752 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:14:56,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:14:56,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:14:56,752 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:14:56,753 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:14:56,753 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:14:56,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:14:56,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:14:56,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:14:56,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:14:56,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-11-10 18:14:57,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:14:57,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:14:57,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:14:57,044 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:14:57,045 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:14:57,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-10 18:14:58,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:14:58,667 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:14:58,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-10 18:14:58,677 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70542543/c72f59b3352946e497d0a23dbfdbb099/FLAGe8b4c0bf5 [2024-11-10 18:14:58,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70542543/c72f59b3352946e497d0a23dbfdbb099 [2024-11-10 18:14:58,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:14:58,706 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:14:58,710 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:14:58,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:14:58,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:14:58,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234dfcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:58, skipping insertion in model container [2024-11-10 18:14:58,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:14:58" (1/1) ... [2024-11-10 18:14:58,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:14:58,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:14:58,999 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:14:59,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:14:59,049 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:14:59,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59 WrapperNode [2024-11-10 18:14:59,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:14:59,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:14:59,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:14:59,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:14:59,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,086 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-11-10 18:14:59,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:14:59,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:14:59,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:14:59,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:14:59,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,126 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]. [2024-11-10 18:14:59,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,133 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:14:59,142 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:14:59,145 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:14:59,145 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:14:59,146 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (1/1) ... [2024-11-10 18:14:59,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:14:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:14:59,182 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) [2024-11-10 18:14:59,186 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 [2024-11-10 18:14:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:14:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:14:59,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:14:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:14:59,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:14:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 18:14:59,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 18:14:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:14:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:14:59,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:14:59,239 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:14:59,345 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:14:59,347 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:14:59,620 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:14:59,620 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:14:59,765 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:14:59,766 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:14:59,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:14:59 BoogieIcfgContainer [2024-11-10 18:14:59,766 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:14:59,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:14:59,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:14:59,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:14:59,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:14:58" (1/3) ... [2024-11-10 18:14:59,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ad14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:14:59, skipping insertion in model container [2024-11-10 18:14:59,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:14:59" (2/3) ... [2024-11-10 18:14:59,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637ad14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:14:59, skipping insertion in model container [2024-11-10 18:14:59,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:14:59" (3/3) ... [2024-11-10 18:14:59,784 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-11-10 18:14:59,800 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:14:59,801 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:14:59,801 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:14:59,866 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 18:14:59,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 36 transitions, 93 flow [2024-11-10 18:14:59,945 INFO L124 PetriNetUnfolderBase]: 6/33 cut-off events. [2024-11-10 18:14:59,949 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 18:14:59,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 6/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-10 18:14:59,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 36 transitions, 93 flow [2024-11-10 18:14:59,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 82 flow [2024-11-10 18:14:59,972 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:14:59,983 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;@99a6b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:14:59,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 18:15:00,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:15:00,004 INFO L124 PetriNetUnfolderBase]: 6/29 cut-off events. [2024-11-10 18:15:00,004 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 18:15:00,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:00,006 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:00,008 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:00,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:00,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1022050706, now seen corresponding path program 1 times [2024-11-10 18:15:00,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:00,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433165671] [2024-11-10 18:15:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433165671] [2024-11-10 18:15:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433165671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:00,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:00,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:15:00,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382709528] [2024-11-10 18:15:00,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:00,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:15:00,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:00,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:15:00,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:15:00,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:15:00,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 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) [2024-11-10 18:15:00,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:00,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:15:00,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:00,379 INFO L124 PetriNetUnfolderBase]: 199/337 cut-off events. [2024-11-10 18:15:00,380 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 18:15:00,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 337 events. 199/337 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1219 event pairs, 124 based on Foata normal form. 76/398 useless extension candidates. Maximal degree in co-relation 578. Up to 293 conditions per place. [2024-11-10 18:15:00,387 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 20 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2024-11-10 18:15:00,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 27 transitions, 112 flow [2024-11-10 18:15:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:15:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:15:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2024-11-10 18:15:00,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-10 18:15:00,413 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 82 flow. Second operand 2 states and 46 transitions. [2024-11-10 18:15:00,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 27 transitions, 112 flow [2024-11-10 18:15:00,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 100 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 18:15:00,427 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 60 flow [2024-11-10 18:15:00,431 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-11-10 18:15:00,435 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2024-11-10 18:15:00,437 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 60 flow [2024-11-10 18:15:00,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 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) [2024-11-10 18:15:00,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:00,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:00,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:15:00,443 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:00,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1965525351, now seen corresponding path program 1 times [2024-11-10 18:15:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:00,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966649319] [2024-11-10 18:15:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:00,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:00,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:00,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:00,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966649319] [2024-11-10 18:15:00,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966649319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:00,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:00,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:15:00,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344959679] [2024-11-10 18:15:00,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:00,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:15:00,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:15:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:15:00,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:15:00,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-10 18:15:00,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:00,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:15:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:01,119 INFO L124 PetriNetUnfolderBase]: 386/681 cut-off events. [2024-11-10 18:15:01,123 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:15:01,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 681 events. 386/681 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3245 event pairs, 124 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 1268. Up to 349 conditions per place. [2024-11-10 18:15:01,131 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 32 selfloop transitions, 4 changer transitions 1/44 dead transitions. [2024-11-10 18:15:01,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 173 flow [2024-11-10 18:15:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:15:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:15:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-11-10 18:15:01,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2024-11-10 18:15:01,136 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 60 flow. Second operand 3 states and 71 transitions. [2024-11-10 18:15:01,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 173 flow [2024-11-10 18:15:01,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:01,141 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 86 flow [2024-11-10 18:15:01,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-10 18:15:01,143 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-11-10 18:15:01,144 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 86 flow [2024-11-10 18:15:01,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2024-11-10 18:15:01,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:01,144 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:01,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:15:01,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:01,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:01,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2120059632, now seen corresponding path program 1 times [2024-11-10 18:15:01,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:01,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774985757] [2024-11-10 18:15:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:01,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:01,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774985757] [2024-11-10 18:15:01,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774985757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:01,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:01,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:15:01,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900416576] [2024-11-10 18:15:01,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:01,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:15:01,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:01,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:15:01,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:15:01,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:01,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-11-10 18:15:01,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:01,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:01,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:01,637 INFO L124 PetriNetUnfolderBase]: 939/1479 cut-off events. [2024-11-10 18:15:01,637 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-11-10 18:15:01,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 1479 events. 939/1479 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7408 event pairs, 258 based on Foata normal form. 84/1510 useless extension candidates. Maximal degree in co-relation 3262. Up to 809 conditions per place. [2024-11-10 18:15:01,652 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 60 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-11-10 18:15:01,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 80 transitions, 369 flow [2024-11-10 18:15:01,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:15:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:15:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-10 18:15:01,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5879629629629629 [2024-11-10 18:15:01,658 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 86 flow. Second operand 6 states and 127 transitions. [2024-11-10 18:15:01,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 80 transitions, 369 flow [2024-11-10 18:15:01,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 80 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:01,661 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 205 flow [2024-11-10 18:15:01,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2024-11-10 18:15:01,663 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2024-11-10 18:15:01,664 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 205 flow [2024-11-10 18:15:01,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-11-10 18:15:01,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:01,664 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:01,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:15:01,665 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:01,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1624087056, now seen corresponding path program 2 times [2024-11-10 18:15:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731010861] [2024-11-10 18:15:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:01,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:01,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731010861] [2024-11-10 18:15:01,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731010861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:01,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:15:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772410720] [2024-11-10 18:15:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:01,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:15:01,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:01,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:15:01,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:15:01,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-10 18:15:01,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-10 18:15:01,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:01,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-10 18:15:01,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:02,113 INFO L124 PetriNetUnfolderBase]: 976/1612 cut-off events. [2024-11-10 18:15:02,114 INFO L125 PetriNetUnfolderBase]: For 3669/3785 co-relation queries the response was YES. [2024-11-10 18:15:02,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4891 conditions, 1612 events. 976/1612 cut-off events. For 3669/3785 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9086 event pairs, 305 based on Foata normal form. 134/1676 useless extension candidates. Maximal degree in co-relation 4882. Up to 796 conditions per place. [2024-11-10 18:15:02,128 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 75 selfloop transitions, 10 changer transitions 12/106 dead transitions. [2024-11-10 18:15:02,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 106 transitions, 702 flow [2024-11-10 18:15:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:15:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:15:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-11-10 18:15:02,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-11-10 18:15:02,130 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 205 flow. Second operand 7 states and 136 transitions. [2024-11-10 18:15:02,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 106 transitions, 702 flow [2024-11-10 18:15:02,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 106 transitions, 702 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:02,135 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 346 flow [2024-11-10 18:15:02,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2024-11-10 18:15:02,136 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2024-11-10 18:15:02,137 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 346 flow [2024-11-10 18:15:02,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-10 18:15:02,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:02,137 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:02,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:15:02,138 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:02,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:02,139 INFO L85 PathProgramCache]: Analyzing trace with hash 875506782, now seen corresponding path program 3 times [2024-11-10 18:15:02,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:02,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962337288] [2024-11-10 18:15:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:02,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:02,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:02,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962337288] [2024-11-10 18:15:02,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962337288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:02,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571416820] [2024-11-10 18:15:02,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:15:02,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:02,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:02,253 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) [2024-11-10 18:15:02,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:15:02,333 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:15:02,334 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:02,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:15:02,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:02,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:02,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571416820] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:02,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:02,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-11-10 18:15:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192396393] [2024-11-10 18:15:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:02,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:15:02,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:15:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:15:02,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-10 18:15:02,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-10 18:15:02,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:02,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-10 18:15:02,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:02,838 INFO L124 PetriNetUnfolderBase]: 1146/2004 cut-off events. [2024-11-10 18:15:02,838 INFO L125 PetriNetUnfolderBase]: For 9683/9741 co-relation queries the response was YES. [2024-11-10 18:15:02,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8082 conditions, 2004 events. 1146/2004 cut-off events. For 9683/9741 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11888 event pairs, 287 based on Foata normal form. 73/2012 useless extension candidates. Maximal degree in co-relation 8067. Up to 985 conditions per place. [2024-11-10 18:15:02,866 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 70 selfloop transitions, 10 changer transitions 5/94 dead transitions. [2024-11-10 18:15:02,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 94 transitions, 788 flow [2024-11-10 18:15:02,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:15:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:15:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-10 18:15:02,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-11-10 18:15:02,869 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 346 flow. Second operand 4 states and 91 transitions. [2024-11-10 18:15:02,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 94 transitions, 788 flow [2024-11-10 18:15:02,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 94 transitions, 788 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:02,890 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 437 flow [2024-11-10 18:15:02,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=437, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-11-10 18:15:02,894 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-11-10 18:15:02,894 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 437 flow [2024-11-10 18:15:02,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-10 18:15:02,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:02,895 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:02,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:15:03,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:03,096 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:03,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash -845636950, now seen corresponding path program 4 times [2024-11-10 18:15:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:03,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343651168] [2024-11-10 18:15:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:03,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:03,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:03,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343651168] [2024-11-10 18:15:03,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343651168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:03,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:03,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:15:03,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892992241] [2024-11-10 18:15:03,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:03,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:15:03,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:03,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:15:03,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:15:03,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-10 18:15:03,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 437 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-10 18:15:03,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:03,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-10 18:15:03,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:03,672 INFO L124 PetriNetUnfolderBase]: 1411/2431 cut-off events. [2024-11-10 18:15:03,672 INFO L125 PetriNetUnfolderBase]: For 16657/16775 co-relation queries the response was YES. [2024-11-10 18:15:03,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10258 conditions, 2431 events. 1411/2431 cut-off events. For 16657/16775 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 15294 event pairs, 360 based on Foata normal form. 159/2497 useless extension candidates. Maximal degree in co-relation 10240. Up to 943 conditions per place. [2024-11-10 18:15:03,698 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 76 selfloop transitions, 21 changer transitions 29/135 dead transitions. [2024-11-10 18:15:03,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 135 transitions, 1197 flow [2024-11-10 18:15:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:15:03,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:15:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-11-10 18:15:03,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-10 18:15:03,702 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 437 flow. Second operand 7 states and 144 transitions. [2024-11-10 18:15:03,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 135 transitions, 1197 flow [2024-11-10 18:15:03,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 135 transitions, 1190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:03,718 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 644 flow [2024-11-10 18:15:03,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=644, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-11-10 18:15:03,719 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-11-10 18:15:03,720 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 644 flow [2024-11-10 18:15:03,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-10 18:15:03,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:03,721 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:03,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:15:03,721 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:03,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 712312498, now seen corresponding path program 5 times [2024-11-10 18:15:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236079775] [2024-11-10 18:15:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:03,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:03,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236079775] [2024-11-10 18:15:03,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236079775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:03,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:03,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:15:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223892788] [2024-11-10 18:15:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:03,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:15:03,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:03,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:15:03,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:15:03,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-10 18:15:03,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 644 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-10 18:15:03,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:03,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-10 18:15:03,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:04,326 INFO L124 PetriNetUnfolderBase]: 1682/2940 cut-off events. [2024-11-10 18:15:04,326 INFO L125 PetriNetUnfolderBase]: For 35457/36098 co-relation queries the response was YES. [2024-11-10 18:15:04,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15075 conditions, 2940 events. 1682/2940 cut-off events. For 35457/36098 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 19687 event pairs, 617 based on Foata normal form. 99/2920 useless extension candidates. Maximal degree in co-relation 15052. Up to 1640 conditions per place. [2024-11-10 18:15:04,365 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 77 selfloop transitions, 31 changer transitions 4/122 dead transitions. [2024-11-10 18:15:04,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 122 transitions, 1566 flow [2024-11-10 18:15:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:15:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:15:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-11-10 18:15:04,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-11-10 18:15:04,368 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 644 flow. Second operand 6 states and 121 transitions. [2024-11-10 18:15:04,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 122 transitions, 1566 flow [2024-11-10 18:15:04,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 122 transitions, 1526 flow, removed 20 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:04,425 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 1027 flow [2024-11-10 18:15:04,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1027, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2024-11-10 18:15:04,427 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-11-10 18:15:04,427 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 1027 flow [2024-11-10 18:15:04,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-10 18:15:04,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:04,428 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:04,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:15:04,428 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:04,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:04,430 INFO L85 PathProgramCache]: Analyzing trace with hash -252473056, now seen corresponding path program 6 times [2024-11-10 18:15:04,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:04,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366510269] [2024-11-10 18:15:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:04,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:04,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366510269] [2024-11-10 18:15:04,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366510269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:04,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895848576] [2024-11-10 18:15:04,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 18:15:04,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:04,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:04,531 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) [2024-11-10 18:15:04,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:15:04,600 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 18:15:04,600 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:04,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:15:04,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:04,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:04,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:04,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895848576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:04,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:04,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-10 18:15:04,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940237206] [2024-11-10 18:15:04,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:04,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 18:15:04,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:04,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 18:15:04,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 18:15:04,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:04,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 1027 flow. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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) [2024-11-10 18:15:04,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:04,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:04,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:05,259 INFO L124 PetriNetUnfolderBase]: 1909/3197 cut-off events. [2024-11-10 18:15:05,260 INFO L125 PetriNetUnfolderBase]: For 39138/39305 co-relation queries the response was YES. [2024-11-10 18:15:05,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17866 conditions, 3197 events. 1909/3197 cut-off events. For 39138/39305 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 20082 event pairs, 684 based on Foata normal form. 89/3196 useless extension candidates. Maximal degree in co-relation 17838. Up to 1771 conditions per place. [2024-11-10 18:15:05,304 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 82 selfloop transitions, 40 changer transitions 22/150 dead transitions. [2024-11-10 18:15:05,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 150 transitions, 2153 flow [2024-11-10 18:15:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:15:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:15:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-11-10 18:15:05,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5648148148148148 [2024-11-10 18:15:05,307 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 1027 flow. Second operand 6 states and 122 transitions. [2024-11-10 18:15:05,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 150 transitions, 2153 flow [2024-11-10 18:15:05,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 150 transitions, 2083 flow, removed 35 selfloop flow, removed 0 redundant places. [2024-11-10 18:15:05,393 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 1517 flow [2024-11-10 18:15:05,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1517, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2024-11-10 18:15:05,394 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2024-11-10 18:15:05,394 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 1517 flow [2024-11-10 18:15:05,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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) [2024-11-10 18:15:05,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:05,395 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:05,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:15:05,599 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,SelfDestructingSolverStorable7 [2024-11-10 18:15:05,600 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:05,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash -803153236, now seen corresponding path program 1 times [2024-11-10 18:15:05,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:05,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599764439] [2024-11-10 18:15:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:05,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599764439] [2024-11-10 18:15:05,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599764439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:05,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:05,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:15:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742651752] [2024-11-10 18:15:05,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:05,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:15:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:05,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:15:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:15:05,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-10 18:15:05,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 1517 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-10 18:15:05,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:05,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-10 18:15:05,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:06,249 INFO L124 PetriNetUnfolderBase]: 1424/2491 cut-off events. [2024-11-10 18:15:06,250 INFO L125 PetriNetUnfolderBase]: For 47211/47618 co-relation queries the response was YES. [2024-11-10 18:15:06,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15001 conditions, 2491 events. 1424/2491 cut-off events. For 47211/47618 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 16018 event pairs, 490 based on Foata normal form. 153/2570 useless extension candidates. Maximal degree in co-relation 14969. Up to 1281 conditions per place. [2024-11-10 18:15:06,275 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 91 selfloop transitions, 23 changer transitions 31/152 dead transitions. [2024-11-10 18:15:06,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 152 transitions, 2177 flow [2024-11-10 18:15:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:15:06,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:15:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-11-10 18:15:06,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5674603174603174 [2024-11-10 18:15:06,277 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 1517 flow. Second operand 7 states and 143 transitions. [2024-11-10 18:15:06,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 152 transitions, 2177 flow [2024-11-10 18:15:06,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 152 transitions, 1837 flow, removed 148 selfloop flow, removed 4 redundant places. [2024-11-10 18:15:06,321 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 1212 flow [2024-11-10 18:15:06,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1212, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-11-10 18:15:06,323 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2024-11-10 18:15:06,323 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 1212 flow [2024-11-10 18:15:06,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-10 18:15:06,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:06,324 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:06,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 18:15:06,324 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:06,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash 593619928, now seen corresponding path program 2 times [2024-11-10 18:15:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117290654] [2024-11-10 18:15:06,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:06,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:06,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:06,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117290654] [2024-11-10 18:15:06,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117290654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:06,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969902260] [2024-11-10 18:15:06,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:15:06,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:06,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:06,442 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) [2024-11-10 18:15:06,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:15:06,506 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:15:06,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:06,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:15:06,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:06,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:06,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:06,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969902260] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:06,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:15:06,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 7 [2024-11-10 18:15:06,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577212124] [2024-11-10 18:15:06,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:06,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:15:06,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:06,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:15:06,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:15:06,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-10 18:15:06,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 1212 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-10 18:15:06,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:06,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-10 18:15:06,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:07,018 INFO L124 PetriNetUnfolderBase]: 1452/2501 cut-off events. [2024-11-10 18:15:07,018 INFO L125 PetriNetUnfolderBase]: For 42455/42654 co-relation queries the response was YES. [2024-11-10 18:15:07,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15469 conditions, 2501 events. 1452/2501 cut-off events. For 42455/42654 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15275 event pairs, 425 based on Foata normal form. 73/2491 useless extension candidates. Maximal degree in co-relation 15437. Up to 1714 conditions per place. [2024-11-10 18:15:07,049 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 83 selfloop transitions, 25 changer transitions 13/128 dead transitions. [2024-11-10 18:15:07,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 128 transitions, 1963 flow [2024-11-10 18:15:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:15:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:15:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-10 18:15:07,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-10 18:15:07,051 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 1212 flow. Second operand 4 states and 87 transitions. [2024-11-10 18:15:07,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 128 transitions, 1963 flow [2024-11-10 18:15:07,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 128 transitions, 1824 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-11-10 18:15:07,091 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 1288 flow [2024-11-10 18:15:07,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1288, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-11-10 18:15:07,092 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2024-11-10 18:15:07,096 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 1288 flow [2024-11-10 18:15:07,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2024-11-10 18:15:07,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:07,096 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:07,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:07,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:07,301 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:07,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1529450300, now seen corresponding path program 3 times [2024-11-10 18:15:07,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:07,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087551199] [2024-11-10 18:15:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:07,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:07,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:07,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087551199] [2024-11-10 18:15:07,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087551199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:07,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544156835] [2024-11-10 18:15:07,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:15:07,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:07,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:07,408 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) [2024-11-10 18:15:07,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:15:07,474 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:15:07,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:07,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 18:15:07,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:07,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:07,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:07,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544156835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:07,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:07,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 18:15:07,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576659361] [2024-11-10 18:15:07,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:07,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 18:15:07,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 18:15:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:15:07,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:07,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 1288 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 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) [2024-11-10 18:15:07,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:07,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:07,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:08,527 INFO L124 PetriNetUnfolderBase]: 2156/3520 cut-off events. [2024-11-10 18:15:08,527 INFO L125 PetriNetUnfolderBase]: For 53689/53754 co-relation queries the response was YES. [2024-11-10 18:15:08,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21600 conditions, 3520 events. 2156/3520 cut-off events. For 53689/53754 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 20952 event pairs, 514 based on Foata normal form. 143/3650 useless extension candidates. Maximal degree in co-relation 21568. Up to 1498 conditions per place. [2024-11-10 18:15:08,644 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 96 selfloop transitions, 109 changer transitions 18/227 dead transitions. [2024-11-10 18:15:08,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 227 transitions, 3320 flow [2024-11-10 18:15:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 18:15:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 18:15:08,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2024-11-10 18:15:08,646 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-11-10 18:15:08,646 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 1288 flow. Second operand 13 states and 243 transitions. [2024-11-10 18:15:08,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 227 transitions, 3320 flow [2024-11-10 18:15:08,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 227 transitions, 3290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:08,692 INFO L231 Difference]: Finished difference. Result has 99 places, 145 transitions, 2655 flow [2024-11-10 18:15:08,692 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2655, PETRI_PLACES=99, PETRI_TRANSITIONS=145} [2024-11-10 18:15:08,693 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2024-11-10 18:15:08,694 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 145 transitions, 2655 flow [2024-11-10 18:15:08,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 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) [2024-11-10 18:15:08,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:08,694 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:08,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:15:08,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:08,895 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:08,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1988201611, now seen corresponding path program 1 times [2024-11-10 18:15:08,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:08,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998289154] [2024-11-10 18:15:08,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:08,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:08,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:08,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998289154] [2024-11-10 18:15:08,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998289154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:15:08,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:15:08,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:15:08,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646220588] [2024-11-10 18:15:08,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:15:08,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:15:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:15:08,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:15:08,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-10 18:15:08,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 145 transitions, 2655 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-10 18:15:08,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:08,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-10 18:15:08,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:09,448 INFO L124 PetriNetUnfolderBase]: 1570/2724 cut-off events. [2024-11-10 18:15:09,452 INFO L125 PetriNetUnfolderBase]: For 59295/59512 co-relation queries the response was YES. [2024-11-10 18:15:09,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19462 conditions, 2724 events. 1570/2724 cut-off events. For 59295/59512 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 16701 event pairs, 225 based on Foata normal form. 76/2764 useless extension candidates. Maximal degree in co-relation 19422. Up to 1189 conditions per place. [2024-11-10 18:15:09,497 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 112 selfloop transitions, 81 changer transitions 4/203 dead transitions. [2024-11-10 18:15:09,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 203 transitions, 3790 flow [2024-11-10 18:15:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:15:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:15:09,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-11-10 18:15:09,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-11-10 18:15:09,499 INFO L175 Difference]: Start difference. First operand has 99 places, 145 transitions, 2655 flow. Second operand 7 states and 142 transitions. [2024-11-10 18:15:09,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 203 transitions, 3790 flow [2024-11-10 18:15:09,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 203 transitions, 3094 flow, removed 265 selfloop flow, removed 8 redundant places. [2024-11-10 18:15:09,700 INFO L231 Difference]: Finished difference. Result has 97 places, 157 transitions, 2595 flow [2024-11-10 18:15:09,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2595, PETRI_PLACES=97, PETRI_TRANSITIONS=157} [2024-11-10 18:15:09,701 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2024-11-10 18:15:09,701 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 157 transitions, 2595 flow [2024-11-10 18:15:09,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-11-10 18:15:09,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:09,702 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:09,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 18:15:09,702 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:09,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash -611138810, now seen corresponding path program 1 times [2024-11-10 18:15:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:09,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457433237] [2024-11-10 18:15:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:09,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:09,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457433237] [2024-11-10 18:15:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457433237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:09,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608770149] [2024-11-10 18:15:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:09,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:09,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:09,914 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) [2024-11-10 18:15:09,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:15:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:09,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 18:15:09,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:10,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:10,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:10,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608770149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:10,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:10,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-10 18:15:10,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238683288] [2024-11-10 18:15:10,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:10,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 18:15:10,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:10,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 18:15:10,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:15:10,856 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:15:10,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 157 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 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) [2024-11-10 18:15:10,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:10,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:15:10,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:11,486 INFO L124 PetriNetUnfolderBase]: 2039/3586 cut-off events. [2024-11-10 18:15:11,486 INFO L125 PetriNetUnfolderBase]: For 55953/56298 co-relation queries the response was YES. [2024-11-10 18:15:11,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22293 conditions, 3586 events. 2039/3586 cut-off events. For 55953/56298 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 22814 event pairs, 265 based on Foata normal form. 16/3421 useless extension candidates. Maximal degree in co-relation 22255. Up to 2015 conditions per place. [2024-11-10 18:15:11,543 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 171 selfloop transitions, 72 changer transitions 2/252 dead transitions. [2024-11-10 18:15:11,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 252 transitions, 4022 flow [2024-11-10 18:15:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:11,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:11,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-11-10 18:15:11,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6080246913580247 [2024-11-10 18:15:11,546 INFO L175 Difference]: Start difference. First operand has 97 places, 157 transitions, 2595 flow. Second operand 9 states and 197 transitions. [2024-11-10 18:15:11,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 252 transitions, 4022 flow [2024-11-10 18:15:11,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 252 transitions, 3727 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-11-10 18:15:11,720 INFO L231 Difference]: Finished difference. Result has 100 places, 198 transitions, 3277 flow [2024-11-10 18:15:11,720 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3277, PETRI_PLACES=100, PETRI_TRANSITIONS=198} [2024-11-10 18:15:11,721 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2024-11-10 18:15:11,721 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 198 transitions, 3277 flow [2024-11-10 18:15:11,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.545454545454545) internal successors, (171), 11 states have internal predecessors, (171), 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) [2024-11-10 18:15:11,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:11,722 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:11,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 18:15:11,922 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 [2024-11-10 18:15:11,923 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:11,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:11,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1973368886, now seen corresponding path program 2 times [2024-11-10 18:15:11,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:11,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684355216] [2024-11-10 18:15:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:11,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:12,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:12,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684355216] [2024-11-10 18:15:12,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684355216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:12,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442218450] [2024-11-10 18:15:12,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:15:12,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:12,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:12,114 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) [2024-11-10 18:15:12,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:15:12,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:15:12,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:12,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 18:15:12,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:12,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:12,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442218450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:12,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:12,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-10 18:15:12,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320556083] [2024-11-10 18:15:12,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:12,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:15:12,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:12,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:15:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:15:12,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:15:12,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 198 transitions, 3277 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2024-11-10 18:15:12,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:12,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:15:12,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:13,665 INFO L124 PetriNetUnfolderBase]: 2421/4252 cut-off events. [2024-11-10 18:15:13,666 INFO L125 PetriNetUnfolderBase]: For 70679/71189 co-relation queries the response was YES. [2024-11-10 18:15:13,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26599 conditions, 4252 events. 2421/4252 cut-off events. For 70679/71189 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27762 event pairs, 427 based on Foata normal form. 16/4051 useless extension candidates. Maximal degree in co-relation 26561. Up to 2682 conditions per place. [2024-11-10 18:15:13,736 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 188 selfloop transitions, 71 changer transitions 2/268 dead transitions. [2024-11-10 18:15:13,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 268 transitions, 4394 flow [2024-11-10 18:15:13,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-11-10 18:15:13,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2024-11-10 18:15:13,738 INFO L175 Difference]: Start difference. First operand has 100 places, 198 transitions, 3277 flow. Second operand 9 states and 194 transitions. [2024-11-10 18:15:13,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 268 transitions, 4394 flow [2024-11-10 18:15:13,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 268 transitions, 4097 flow, removed 133 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:13,882 INFO L231 Difference]: Finished difference. Result has 110 places, 217 transitions, 3542 flow [2024-11-10 18:15:13,883 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3542, PETRI_PLACES=110, PETRI_TRANSITIONS=217} [2024-11-10 18:15:13,884 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 74 predicate places. [2024-11-10 18:15:13,884 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 217 transitions, 3542 flow [2024-11-10 18:15:13,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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) [2024-11-10 18:15:13,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:13,885 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:13,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 18:15:14,085 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 [2024-11-10 18:15:14,086 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:14,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash -951759262, now seen corresponding path program 3 times [2024-11-10 18:15:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:14,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281728565] [2024-11-10 18:15:14,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:14,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:14,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:14,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281728565] [2024-11-10 18:15:14,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281728565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:14,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365117884] [2024-11-10 18:15:14,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:15:14,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:14,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:14,307 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) [2024-11-10 18:15:14,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 18:15:14,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:15:14,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:14,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 18:15:14,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:14,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:15,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365117884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:15,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:15,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-11-10 18:15:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478060793] [2024-11-10 18:15:15,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:15,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 18:15:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 18:15:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:15:15,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:15:15,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 217 transitions, 3542 flow. Second operand has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 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) [2024-11-10 18:15:15,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:15,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:15:15,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:16,087 INFO L124 PetriNetUnfolderBase]: 3021/5302 cut-off events. [2024-11-10 18:15:16,089 INFO L125 PetriNetUnfolderBase]: For 86082/86745 co-relation queries the response was YES. [2024-11-10 18:15:16,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31973 conditions, 5302 events. 3021/5302 cut-off events. For 86082/86745 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 36214 event pairs, 634 based on Foata normal form. 18/5030 useless extension candidates. Maximal degree in co-relation 31931. Up to 3460 conditions per place. [2024-11-10 18:15:16,152 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 230 selfloop transitions, 73 changer transitions 2/312 dead transitions. [2024-11-10 18:15:16,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 312 transitions, 5174 flow [2024-11-10 18:15:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-11-10 18:15:16,154 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2024-11-10 18:15:16,154 INFO L175 Difference]: Start difference. First operand has 110 places, 217 transitions, 3542 flow. Second operand 9 states and 194 transitions. [2024-11-10 18:15:16,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 312 transitions, 5174 flow [2024-11-10 18:15:16,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 312 transitions, 4884 flow, removed 114 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:16,278 INFO L231 Difference]: Finished difference. Result has 120 places, 259 transitions, 4291 flow [2024-11-10 18:15:16,278 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4291, PETRI_PLACES=120, PETRI_TRANSITIONS=259} [2024-11-10 18:15:16,278 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 84 predicate places. [2024-11-10 18:15:16,279 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 259 transitions, 4291 flow [2024-11-10 18:15:16,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.454545454545455) internal successors, (170), 11 states have internal predecessors, (170), 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) [2024-11-10 18:15:16,279 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:16,279 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:16,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:16,480 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 [2024-11-10 18:15:16,480 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:16,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:16,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1890841182, now seen corresponding path program 4 times [2024-11-10 18:15:16,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:16,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373308690] [2024-11-10 18:15:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:16,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:16,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:16,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373308690] [2024-11-10 18:15:16,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373308690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:16,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998020040] [2024-11-10 18:15:16,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:15:16,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:16,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:16,675 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) [2024-11-10 18:15:16,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 18:15:16,742 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:15:16,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:16,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 18:15:16,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:16,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:17,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998020040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:17,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:17,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-10 18:15:17,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878643776] [2024-11-10 18:15:17,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:17,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:15:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:17,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:15:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:15:17,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:15:17,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 259 transitions, 4291 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-11-10 18:15:17,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:17,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:15:17,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:18,225 INFO L124 PetriNetUnfolderBase]: 3351/5905 cut-off events. [2024-11-10 18:15:18,226 INFO L125 PetriNetUnfolderBase]: For 96129/96880 co-relation queries the response was YES. [2024-11-10 18:15:18,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35393 conditions, 5905 events. 3351/5905 cut-off events. For 96129/96880 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 41378 event pairs, 784 based on Foata normal form. 24/5612 useless extension candidates. Maximal degree in co-relation 35346. Up to 4041 conditions per place. [2024-11-10 18:15:18,292 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 247 selfloop transitions, 71 changer transitions 2/327 dead transitions. [2024-11-10 18:15:18,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 327 transitions, 5605 flow [2024-11-10 18:15:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:18,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-11-10 18:15:18,294 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-11-10 18:15:18,295 INFO L175 Difference]: Start difference. First operand has 120 places, 259 transitions, 4291 flow. Second operand 9 states and 190 transitions. [2024-11-10 18:15:18,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 327 transitions, 5605 flow [2024-11-10 18:15:18,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 327 transitions, 5240 flow, removed 167 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:18,406 INFO L231 Difference]: Finished difference. Result has 130 places, 278 transitions, 4535 flow [2024-11-10 18:15:18,406 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3926, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4535, PETRI_PLACES=130, PETRI_TRANSITIONS=278} [2024-11-10 18:15:18,407 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 94 predicate places. [2024-11-10 18:15:18,407 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 278 transitions, 4535 flow [2024-11-10 18:15:18,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-11-10 18:15:18,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:18,408 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:18,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:18,608 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 [2024-11-10 18:15:18,609 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:18,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash 357697814, now seen corresponding path program 5 times [2024-11-10 18:15:18,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:18,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565046441] [2024-11-10 18:15:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:18,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:18,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565046441] [2024-11-10 18:15:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565046441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:18,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14268651] [2024-11-10 18:15:18,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 18:15:18,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:18,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:18,808 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) [2024-11-10 18:15:18,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 18:15:18,878 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:15:18,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:18,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 18:15:18,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:19,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14268651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:20,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-10 18:15:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765436049] [2024-11-10 18:15:20,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:20,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:15:20,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:15:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:15:20,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:15:20,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 278 transitions, 4535 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-11-10 18:15:20,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:20,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:15:20,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:21,210 INFO L124 PetriNetUnfolderBase]: 3843/6785 cut-off events. [2024-11-10 18:15:21,210 INFO L125 PetriNetUnfolderBase]: For 104517/105401 co-relation queries the response was YES. [2024-11-10 18:15:21,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39795 conditions, 6785 events. 3843/6785 cut-off events. For 104517/105401 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 48879 event pairs, 990 based on Foata normal form. 30/6441 useless extension candidates. Maximal degree in co-relation 39744. Up to 4698 conditions per place. [2024-11-10 18:15:21,279 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 286 selfloop transitions, 73 changer transitions 2/368 dead transitions. [2024-11-10 18:15:21,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 368 transitions, 6410 flow [2024-11-10 18:15:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:21,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-11-10 18:15:21,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 18:15:21,281 INFO L175 Difference]: Start difference. First operand has 130 places, 278 transitions, 4535 flow. Second operand 9 states and 189 transitions. [2024-11-10 18:15:21,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 368 transitions, 6410 flow [2024-11-10 18:15:21,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 368 transitions, 6084 flow, removed 132 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:21,409 INFO L231 Difference]: Finished difference. Result has 140 places, 320 transitions, 5351 flow [2024-11-10 18:15:21,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5351, PETRI_PLACES=140, PETRI_TRANSITIONS=320} [2024-11-10 18:15:21,410 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 104 predicate places. [2024-11-10 18:15:21,410 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 320 transitions, 5351 flow [2024-11-10 18:15:21,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-11-10 18:15:21,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:21,411 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:21,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:21,611 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 [2024-11-10 18:15:21,612 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:21,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1901836590, now seen corresponding path program 6 times [2024-11-10 18:15:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:21,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247892292] [2024-11-10 18:15:21,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:21,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:21,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:21,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247892292] [2024-11-10 18:15:21,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247892292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:21,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278848764] [2024-11-10 18:15:21,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 18:15:21,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:21,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:21,798 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) [2024-11-10 18:15:21,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 18:15:21,866 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-10 18:15:21,867 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:21,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 18:15:21,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:21,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:23,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278848764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:23,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:23,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-11-10 18:15:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632016021] [2024-11-10 18:15:23,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:23,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:15:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:23,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:15:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:15:23,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-10 18:15:23,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 320 transitions, 5351 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-11-10 18:15:23,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:23,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-10 18:15:23,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:24,120 INFO L124 PetriNetUnfolderBase]: 4175/7367 cut-off events. [2024-11-10 18:15:24,120 INFO L125 PetriNetUnfolderBase]: For 118184/119223 co-relation queries the response was YES. [2024-11-10 18:15:24,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43272 conditions, 7367 events. 4175/7367 cut-off events. For 118184/119223 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 53954 event pairs, 1140 based on Foata normal form. 30/6994 useless extension candidates. Maximal degree in co-relation 43216. Up to 5204 conditions per place. [2024-11-10 18:15:24,197 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 304 selfloop transitions, 73 changer transitions 2/386 dead transitions. [2024-11-10 18:15:24,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 386 transitions, 6884 flow [2024-11-10 18:15:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:15:24,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:15:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-11-10 18:15:24,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-11-10 18:15:24,201 INFO L175 Difference]: Start difference. First operand has 140 places, 320 transitions, 5351 flow. Second operand 9 states and 188 transitions. [2024-11-10 18:15:24,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 386 transitions, 6884 flow [2024-11-10 18:15:24,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 386 transitions, 6441 flow, removed 206 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:24,402 INFO L231 Difference]: Finished difference. Result has 150 places, 339 transitions, 5595 flow [2024-11-10 18:15:24,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4908, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5595, PETRI_PLACES=150, PETRI_TRANSITIONS=339} [2024-11-10 18:15:24,403 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 114 predicate places. [2024-11-10 18:15:24,404 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 339 transitions, 5595 flow [2024-11-10 18:15:24,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2024-11-10 18:15:24,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:24,404 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:24,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 18:15:24,608 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 [2024-11-10 18:15:24,609 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:24,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1694705709, now seen corresponding path program 7 times [2024-11-10 18:15:24,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:24,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250416067] [2024-11-10 18:15:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:24,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250416067] [2024-11-10 18:15:24,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250416067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285007364] [2024-11-10 18:15:24,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 18:15:24,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:24,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:24,742 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) [2024-11-10 18:15:24,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 18:15:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:24,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 18:15:24,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:24,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:24,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:24,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285007364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:24,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:24,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-10 18:15:24,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437703079] [2024-11-10 18:15:24,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:24,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:15:24,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:15:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:15:24,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:24,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 339 transitions, 5595 flow. Second operand has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 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) [2024-11-10 18:15:24,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:24,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:24,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:28,907 INFO L124 PetriNetUnfolderBase]: 13226/20488 cut-off events. [2024-11-10 18:15:28,907 INFO L125 PetriNetUnfolderBase]: For 294922/294954 co-relation queries the response was YES. [2024-11-10 18:15:28,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112667 conditions, 20488 events. 13226/20488 cut-off events. For 294922/294954 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 140920 event pairs, 2120 based on Foata normal form. 222/20697 useless extension candidates. Maximal degree in co-relation 112607. Up to 5126 conditions per place. [2024-11-10 18:15:29,084 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 655 selfloop transitions, 247 changer transitions 0/906 dead transitions. [2024-11-10 18:15:29,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 906 transitions, 15937 flow [2024-11-10 18:15:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-10 18:15:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-10 18:15:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 543 transitions. [2024-11-10 18:15:29,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48655913978494625 [2024-11-10 18:15:29,087 INFO L175 Difference]: Start difference. First operand has 150 places, 339 transitions, 5595 flow. Second operand 31 states and 543 transitions. [2024-11-10 18:15:29,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 906 transitions, 15937 flow [2024-11-10 18:15:29,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 906 transitions, 14891 flow, removed 490 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:29,510 INFO L231 Difference]: Finished difference. Result has 204 places, 505 transitions, 9225 flow [2024-11-10 18:15:29,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5195, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=9225, PETRI_PLACES=204, PETRI_TRANSITIONS=505} [2024-11-10 18:15:29,511 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 168 predicate places. [2024-11-10 18:15:29,511 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 505 transitions, 9225 flow [2024-11-10 18:15:29,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 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) [2024-11-10 18:15:29,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:29,512 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:29,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-10 18:15:29,712 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 [2024-11-10 18:15:29,712 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:29,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash 899012127, now seen corresponding path program 8 times [2024-11-10 18:15:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:29,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199071975] [2024-11-10 18:15:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:29,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:29,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199071975] [2024-11-10 18:15:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199071975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682801582] [2024-11-10 18:15:29,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:15:29,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:29,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:29,864 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) [2024-11-10 18:15:29,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 18:15:29,924 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:15:29,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:29,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 18:15:29,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:29,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682801582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:30,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:30,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-11-10 18:15:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039291909] [2024-11-10 18:15:30,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:30,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 18:15:30,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 18:15:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-10 18:15:30,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:30,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 505 transitions, 9225 flow. Second operand has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 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) [2024-11-10 18:15:30,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:30,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:30,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:36,058 INFO L124 PetriNetUnfolderBase]: 16050/24825 cut-off events. [2024-11-10 18:15:36,058 INFO L125 PetriNetUnfolderBase]: For 750533/754596 co-relation queries the response was YES. [2024-11-10 18:15:36,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175744 conditions, 24825 events. 16050/24825 cut-off events. For 750533/754596 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 177337 event pairs, 1582 based on Foata normal form. 623/24922 useless extension candidates. Maximal degree in co-relation 175657. Up to 6775 conditions per place. [2024-11-10 18:15:36,444 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 1032 selfloop transitions, 552 changer transitions 0/1589 dead transitions. [2024-11-10 18:15:36,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 1589 transitions, 30322 flow [2024-11-10 18:15:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 18:15:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-10 18:15:36,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 597 transitions. [2024-11-10 18:15:36,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2024-11-10 18:15:36,447 INFO L175 Difference]: Start difference. First operand has 204 places, 505 transitions, 9225 flow. Second operand 30 states and 597 transitions. [2024-11-10 18:15:36,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 1589 transitions, 30322 flow [2024-11-10 18:15:38,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 1589 transitions, 28568 flow, removed 845 selfloop flow, removed 1 redundant places. [2024-11-10 18:15:38,743 INFO L231 Difference]: Finished difference. Result has 248 places, 857 transitions, 16416 flow [2024-11-10 18:15:38,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8213, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16416, PETRI_PLACES=248, PETRI_TRANSITIONS=857} [2024-11-10 18:15:38,743 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 212 predicate places. [2024-11-10 18:15:38,743 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 857 transitions, 16416 flow [2024-11-10 18:15:38,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 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) [2024-11-10 18:15:38,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:38,744 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:38,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 18:15:38,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:38,944 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:38,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1458579711, now seen corresponding path program 9 times [2024-11-10 18:15:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:38,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261231928] [2024-11-10 18:15:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:39,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:39,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261231928] [2024-11-10 18:15:39,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261231928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:39,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240719507] [2024-11-10 18:15:39,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:15:39,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:39,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:39,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:15:39,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 18:15:39,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 18:15:39,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:39,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 18:15:39,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:39,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240719507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:39,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:39,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-10 18:15:39,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751398511] [2024-11-10 18:15:39,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:39,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 18:15:39,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 18:15:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-10 18:15:39,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 18:15:39,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 857 transitions, 16416 flow. Second operand has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 15 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) [2024-11-10 18:15:39,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:39,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 18:15:39,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:15:48,553 INFO L124 PetriNetUnfolderBase]: 21428/33194 cut-off events. [2024-11-10 18:15:48,553 INFO L125 PetriNetUnfolderBase]: For 1494981/1501698 co-relation queries the response was YES. [2024-11-10 18:15:48,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284722 conditions, 33194 events. 21428/33194 cut-off events. For 1494981/1501698 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 247567 event pairs, 2671 based on Foata normal form. 1047/33538 useless extension candidates. Maximal degree in co-relation 284618. Up to 9564 conditions per place. [2024-11-10 18:15:49,242 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 1128 selfloop transitions, 595 changer transitions 0/1733 dead transitions. [2024-11-10 18:15:49,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 1733 transitions, 36943 flow [2024-11-10 18:15:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 18:15:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-10 18:15:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 445 transitions. [2024-11-10 18:15:49,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5150462962962963 [2024-11-10 18:15:49,245 INFO L175 Difference]: Start difference. First operand has 248 places, 857 transitions, 16416 flow. Second operand 24 states and 445 transitions. [2024-11-10 18:15:49,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 1733 transitions, 36943 flow [2024-11-10 18:15:57,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 1733 transitions, 34753 flow, removed 1024 selfloop flow, removed 2 redundant places. [2024-11-10 18:15:57,827 INFO L231 Difference]: Finished difference. Result has 279 places, 1128 transitions, 21251 flow [2024-11-10 18:15:57,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15376, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=21251, PETRI_PLACES=279, PETRI_TRANSITIONS=1128} [2024-11-10 18:15:57,829 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 243 predicate places. [2024-11-10 18:15:57,829 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 1128 transitions, 21251 flow [2024-11-10 18:15:57,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 15 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) [2024-11-10 18:15:57,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:15:57,829 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:15:57,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-10 18:15:58,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-10 18:15:58,030 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 18:15:58,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:15:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash 834139407, now seen corresponding path program 10 times [2024-11-10 18:15:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:15:58,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231259090] [2024-11-10 18:15:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:15:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:15:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:15:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:15:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:15:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231259090] [2024-11-10 18:15:58,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231259090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:15:58,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383836684] [2024-11-10 18:15:58,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:15:58,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:15:58,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:15:58,130 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:15:58,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 18:15:58,193 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:15:58,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:15:58,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 18:15:58,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:15:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:58,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:15:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:15:58,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383836684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:15:58,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:15:58,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-11-10 18:15:58,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028507613] [2024-11-10 18:15:58,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:15:58,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 18:15:58,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:15:58,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 18:15:58,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-10 18:15:58,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-10 18:15:58,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 1128 transitions, 21251 flow. Second operand has 15 states, 15 states have (on average 11.066666666666666) internal successors, (166), 15 states have internal predecessors, (166), 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) [2024-11-10 18:15:58,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:15:58,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-10 18:15:58,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:16:12,963 INFO L124 PetriNetUnfolderBase]: 27982/42613 cut-off events. [2024-11-10 18:16:12,964 INFO L125 PetriNetUnfolderBase]: For 2234311/2234409 co-relation queries the response was YES. [2024-11-10 18:16:13,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392425 conditions, 42613 events. 27982/42613 cut-off events. For 2234311/2234409 co-relation queries the response was YES. Maximal size of possible extension queue 1749. Compared 316012 event pairs, 3383 based on Foata normal form. 982/43591 useless extension candidates. Maximal degree in co-relation 392311. Up to 11796 conditions per place. [2024-11-10 18:16:13,800 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 1135 selfloop transitions, 1220 changer transitions 0/2359 dead transitions. [2024-11-10 18:16:13,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 2359 transitions, 50792 flow [2024-11-10 18:16:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-10 18:16:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2024-11-10 18:16:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 1205 transitions. [2024-11-10 18:16:13,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47143974960876367 [2024-11-10 18:16:13,804 INFO L175 Difference]: Start difference. First operand has 279 places, 1128 transitions, 21251 flow. Second operand 71 states and 1205 transitions. [2024-11-10 18:16:13,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 2359 transitions, 50792 flow