./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d 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/unroll-cond-5.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 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:57:58,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:57:58,483 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:57:58,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:57:58,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:57:58,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:57:58,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:57:58,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:57:58,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:57:58,526 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:57:58,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:57:58,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:57:58,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:57:58,527 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:57:58,529 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:57:58,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:57:58,530 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:57:58,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:57:58,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:57:58,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:57:58,531 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:57:58,534 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:57:58,535 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:57:58,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:57:58,535 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:57:58,535 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:57:58,536 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:57:58,536 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:57:58,536 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:57:58,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:57:58,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:57:58,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:57:58,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:57:58,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:57:58,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:57:58,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:57:58,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:57:58,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:57:58,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:57:58,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:57:58,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:57:58,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:57:58,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-11-09 10:57:58,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:57:58,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:57:58,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:57:58,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:57:58,894 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:57:58,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-11-09 10:58:00,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:58:00,494 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:58:00,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-11-09 10:58:00,501 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf78e13b/07d4071a03f247a6a9a9921c81c1a5a4/FLAG0b5d43981 [2024-11-09 10:58:00,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bf78e13b/07d4071a03f247a6a9a9921c81c1a5a4 [2024-11-09 10:58:00,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:58:00,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:58:00,519 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:58:00,519 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:58:00,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:58:00,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c672023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00, skipping insertion in model container [2024-11-09 10:58:00,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,567 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:58:00,783 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 10:58:00,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:58:00,795 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:58:00,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:58:00,836 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:58:00,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00 WrapperNode [2024-11-09 10:58:00,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:58:00,838 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:58:00,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:58:00,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:58:00,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,884 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 199 [2024-11-09 10:58:00,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:58:00,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:58:00,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:58:00,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:58:00,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,902 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,921 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 10:58:00,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,938 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:58:00,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:58:00,946 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:58:00,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:58:00,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (1/1) ... [2024-11-09 10:58:00,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:58:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:00,979 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) [2024-11-09 10:58:00,981 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 [2024-11-09 10:58:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:58:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 10:58:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 10:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 10:58:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 10:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:58:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:58:01,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:58:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 10:58:01,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 10:58:01,026 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:58:01,148 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:58:01,166 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:58:01,596 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:58:01,597 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:58:01,880 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:58:01,881 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-09 10:58:01,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:58:01 BoogieIcfgContainer [2024-11-09 10:58:01,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:58:01,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:58:01,885 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:58:01,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:58:01,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:58:00" (1/3) ... [2024-11-09 10:58:01,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c356775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:58:01, skipping insertion in model container [2024-11-09 10:58:01,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:58:00" (2/3) ... [2024-11-09 10:58:01,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c356775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:58:01, skipping insertion in model container [2024-11-09 10:58:01,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:58:01" (3/3) ... [2024-11-09 10:58:01,894 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2024-11-09 10:58:01,914 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:58:01,914 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-09 10:58:01,914 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:58:01,987 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:58:02,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 142 flow [2024-11-09 10:58:02,118 INFO L124 PetriNetUnfolderBase]: 7/62 cut-off events. [2024-11-09 10:58:02,119 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:58:02,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 62 events. 7/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-09 10:58:02,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 64 transitions, 142 flow [2024-11-09 10:58:02,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 61 transitions, 134 flow [2024-11-09 10:58:02,140 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:58:02,148 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;@2547fe3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:58:02,149 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-09 10:58:02,156 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:58:02,156 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-09 10:58:02,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:58:02,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:02,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:58:02,158 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:02,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 671334, now seen corresponding path program 1 times [2024-11-09 10:58:02,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:02,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032393534] [2024-11-09 10:58:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:02,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:02,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:02,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032393534] [2024-11-09 10:58:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032393534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:02,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:02,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:58:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23514828] [2024-11-09 10:58:02,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:02,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:58:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:58:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:58:02,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-09 10:58:02,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-09 10:58:02,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:02,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-09 10:58:02,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:02,723 INFO L124 PetriNetUnfolderBase]: 218/540 cut-off events. [2024-11-09 10:58:02,723 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-09 10:58:02,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 540 events. 218/540 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3143 event pairs, 141 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 804. Up to 347 conditions per place. [2024-11-09 10:58:02,730 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 30 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-09 10:58:02,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 192 flow [2024-11-09 10:58:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:58:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:58:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-09 10:58:02,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-11-09 10:58:02,744 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 134 flow. Second operand 3 states and 121 transitions. [2024-11-09 10:58:02,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 192 flow [2024-11-09 10:58:02,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:58:02,752 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 124 flow [2024-11-09 10:58:02,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-11-09 10:58:02,762 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-09 10:58:02,763 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 124 flow [2024-11-09 10:58:02,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-11-09 10:58:02,763 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:02,764 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:58:02,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:58:02,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:02,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:02,766 INFO L85 PathProgramCache]: Analyzing trace with hash 671335, now seen corresponding path program 1 times [2024-11-09 10:58:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:02,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701931684] [2024-11-09 10:58:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:02,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:03,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:03,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701931684] [2024-11-09 10:58:03,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701931684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:03,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:03,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:58:03,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523003754] [2024-11-09 10:58:03,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:03,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:58:03,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:03,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:58:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:58:03,105 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-09 10:58:03,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-09 10:58:03,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:03,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-09 10:58:03,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:03,289 INFO L124 PetriNetUnfolderBase]: 219/543 cut-off events. [2024-11-09 10:58:03,289 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 10:58:03,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 543 events. 219/543 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3160 event pairs, 141 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 885. Up to 352 conditions per place. [2024-11-09 10:58:03,297 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 33 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-11-09 10:58:03,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 204 flow [2024-11-09 10:58:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:58:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:58:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-09 10:58:03,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-11-09 10:58:03,303 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 124 flow. Second operand 3 states and 124 transitions. [2024-11-09 10:58:03,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 204 flow [2024-11-09 10:58:03,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:03,306 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 139 flow [2024-11-09 10:58:03,307 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2024-11-09 10:58:03,309 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-11-09 10:58:03,310 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 139 flow [2024-11-09 10:58:03,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-11-09 10:58:03,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:03,310 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-09 10:58:03,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:58:03,311 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:03,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash 645174634, now seen corresponding path program 1 times [2024-11-09 10:58:03,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:03,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817503719] [2024-11-09 10:58:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:03,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817503719] [2024-11-09 10:58:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817503719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:03,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294339308] [2024-11-09 10:58:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:03,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:03,634 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) [2024-11-09 10:58:03,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:58:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:03,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 10:58:03,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:03,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:58:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:03,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:04,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294339308] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:04,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:58:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339202577] [2024-11-09 10:58:04,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:04,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:58:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:58:04,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:58:04,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-09 10:58:04,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 139 flow. Second operand has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 states have internal predecessors, (334), 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) [2024-11-09 10:58:04,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:04,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-09 10:58:04,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:04,620 INFO L124 PetriNetUnfolderBase]: 220/545 cut-off events. [2024-11-09 10:58:04,621 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 10:58:04,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 545 events. 220/545 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3165 event pairs, 141 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 885. Up to 349 conditions per place. [2024-11-09 10:58:04,625 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 29 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-11-09 10:58:04,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 223 flow [2024-11-09 10:58:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:58:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:58:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2024-11-09 10:58:04,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5424107142857143 [2024-11-09 10:58:04,628 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 139 flow. Second operand 7 states and 243 transitions. [2024-11-09 10:58:04,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 223 flow [2024-11-09 10:58:04,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:04,630 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 164 flow [2024-11-09 10:58:04,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-09 10:58:04,631 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-09 10:58:04,631 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 164 flow [2024-11-09 10:58:04,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 states have internal predecessors, (334), 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) [2024-11-09 10:58:04,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:04,632 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:58:04,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:58:04,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:04,837 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:04,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1472063753, now seen corresponding path program 1 times [2024-11-09 10:58:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:04,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564992537] [2024-11-09 10:58:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:04,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:04,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:04,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564992537] [2024-11-09 10:58:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564992537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:04,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:04,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:58:04,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216038856] [2024-11-09 10:58:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:04,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:58:04,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:58:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:58:04,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-11-09 10:58:04,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-09 10:58:04,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:04,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-11-09 10:58:04,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:05,082 INFO L124 PetriNetUnfolderBase]: 220/468 cut-off events. [2024-11-09 10:58:05,082 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 10:58:05,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 468 events. 220/468 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2254 event pairs, 141 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 808. Up to 348 conditions per place. [2024-11-09 10:58:05,086 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 34 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-11-09 10:58:05,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 220 flow [2024-11-09 10:58:05,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:58:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:58:05,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-09 10:58:05,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-11-09 10:58:05,088 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 164 flow. Second operand 4 states and 118 transitions. [2024-11-09 10:58:05,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 220 flow [2024-11-09 10:58:05,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 202 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:05,091 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 134 flow [2024-11-09 10:58:05,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2024-11-09 10:58:05,092 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2024-11-09 10:58:05,092 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 134 flow [2024-11-09 10:58:05,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2024-11-09 10:58:05,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:05,092 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 10:58:05,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:58:05,093 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:05,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1472063752, now seen corresponding path program 1 times [2024-11-09 10:58:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127390670] [2024-11-09 10:58:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127390670] [2024-11-09 10:58:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127390670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:05,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:05,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:58:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725462290] [2024-11-09 10:58:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:05,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:58:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:58:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:58:05,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-11-09 10:58:05,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-09 10:58:05,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:05,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-11-09 10:58:05,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:05,260 INFO L124 PetriNetUnfolderBase]: 219/467 cut-off events. [2024-11-09 10:58:05,260 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-09 10:58:05,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 467 events. 219/467 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2231 event pairs, 141 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 808. Up to 353 conditions per place. [2024-11-09 10:58:05,263 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-09 10:58:05,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 203 flow [2024-11-09 10:58:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:58:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:58:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-11-09 10:58:05,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-11-09 10:58:05,265 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 134 flow. Second operand 3 states and 125 transitions. [2024-11-09 10:58:05,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 203 flow [2024-11-09 10:58:05,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:05,266 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 129 flow [2024-11-09 10:58:05,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-09 10:58:05,267 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2024-11-09 10:58:05,267 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 129 flow [2024-11-09 10:58:05,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-09 10:58:05,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:05,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:05,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:58:05,269 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:05,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash 421903637, now seen corresponding path program 1 times [2024-11-09 10:58:05,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:05,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628485162] [2024-11-09 10:58:05,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:05,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:05,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:05,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:05,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628485162] [2024-11-09 10:58:05,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628485162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:05,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845064209] [2024-11-09 10:58:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:05,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:05,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:05,433 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) [2024-11-09 10:58:05,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 10:58:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:05,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:58:05,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:05,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:05,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 10:58:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:05,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845064209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:05,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:05,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:58:05,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369741813] [2024-11-09 10:58:05,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:05,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:58:05,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:05,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:58:05,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:58:05,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-09 10:58:05,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 129 flow. Second operand has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 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) [2024-11-09 10:58:05,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:05,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-09 10:58:05,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:06,255 INFO L124 PetriNetUnfolderBase]: 511/921 cut-off events. [2024-11-09 10:58:06,255 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-09 10:58:06,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1726 conditions, 921 events. 511/921 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4708 event pairs, 169 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 1712. Up to 457 conditions per place. [2024-11-09 10:58:06,262 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 60 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-09 10:58:06,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 312 flow [2024-11-09 10:58:06,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:58:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:58:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-11-09 10:58:06,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-09 10:58:06,265 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 129 flow. Second operand 4 states and 176 transitions. [2024-11-09 10:58:06,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 312 flow [2024-11-09 10:58:06,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:06,268 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 142 flow [2024-11-09 10:58:06,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-11-09 10:58:06,270 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2024-11-09 10:58:06,271 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 142 flow [2024-11-09 10:58:06,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 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) [2024-11-09 10:58:06,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:06,272 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:06,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 10:58:06,476 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,SelfDestructingSolverStorable5 [2024-11-09 10:58:06,477 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:06,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1722492185, now seen corresponding path program 1 times [2024-11-09 10:58:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:06,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123322119] [2024-11-09 10:58:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:06,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:06,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:06,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123322119] [2024-11-09 10:58:06,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123322119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:06,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579278235] [2024-11-09 10:58:06,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:06,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:06,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:06,687 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) [2024-11-09 10:58:06,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 10:58:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:06,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:58:06,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:06,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:06,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-09 10:58:07,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:07,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579278235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:07,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:07,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-09 10:58:07,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905632635] [2024-11-09 10:58:07,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:07,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 10:58:07,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:07,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 10:58:07,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-09 10:58:07,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-09 10:58:07,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 142 flow. Second operand has 17 states, 17 states have (on average 30.764705882352942) internal successors, (523), 17 states have internal predecessors, (523), 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) [2024-11-09 10:58:07,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:07,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-09 10:58:07,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:08,576 INFO L124 PetriNetUnfolderBase]: 1073/2096 cut-off events. [2024-11-09 10:58:08,576 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-09 10:58:08,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4029 conditions, 2096 events. 1073/2096 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13395 event pairs, 434 based on Foata normal form. 0/1858 useless extension candidates. Maximal degree in co-relation 2260. Up to 705 conditions per place. [2024-11-09 10:58:08,587 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 101 selfloop transitions, 15 changer transitions 0/130 dead transitions. [2024-11-09 10:58:08,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 546 flow [2024-11-09 10:58:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:58:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:58:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 347 transitions. [2024-11-09 10:58:08,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.677734375 [2024-11-09 10:58:08,589 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 142 flow. Second operand 8 states and 347 transitions. [2024-11-09 10:58:08,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 546 flow [2024-11-09 10:58:08,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 130 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:08,593 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 228 flow [2024-11-09 10:58:08,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-11-09 10:58:08,594 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-09 10:58:08,595 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 228 flow [2024-11-09 10:58:08,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.764705882352942) internal successors, (523), 17 states have internal predecessors, (523), 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) [2024-11-09 10:58:08,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:08,596 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:08,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 10:58:08,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:08,797 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:08,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1678641019, now seen corresponding path program 1 times [2024-11-09 10:58:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:08,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172918481] [2024-11-09 10:58:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:08,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:08,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172918481] [2024-11-09 10:58:08,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172918481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:08,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208966997] [2024-11-09 10:58:08,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:08,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:08,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:08,943 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) [2024-11-09 10:58:08,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 10:58:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:09,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 10:58:09,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:09,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:09,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 10:58:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:09,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208966997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:09,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:09,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-09 10:58:09,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209375436] [2024-11-09 10:58:09,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:09,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 10:58:09,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:09,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 10:58:09,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-09 10:58:09,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-11-09 10:58:09,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 228 flow. Second operand has 11 states, 11 states have (on average 23.727272727272727) internal successors, (261), 11 states have internal predecessors, (261), 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) [2024-11-09 10:58:09,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:09,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-11-09 10:58:09,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:09,771 INFO L124 PetriNetUnfolderBase]: 1851/3107 cut-off events. [2024-11-09 10:58:09,771 INFO L125 PetriNetUnfolderBase]: For 1771/1871 co-relation queries the response was YES. [2024-11-09 10:58:09,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7465 conditions, 3107 events. 1851/3107 cut-off events. For 1771/1871 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17273 event pairs, 372 based on Foata normal form. 160/3046 useless extension candidates. Maximal degree in co-relation 4661. Up to 2119 conditions per place. [2024-11-09 10:58:09,791 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 66 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-11-09 10:58:09,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 464 flow [2024-11-09 10:58:09,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:58:09,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:58:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-11-09 10:58:09,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-11-09 10:58:09,793 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 228 flow. Second operand 4 states and 150 transitions. [2024-11-09 10:58:09,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 464 flow [2024-11-09 10:58:09,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 457 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:09,802 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 299 flow [2024-11-09 10:58:09,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2024-11-09 10:58:09,804 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-09 10:58:09,804 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 299 flow [2024-11-09 10:58:09,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.727272727272727) internal successors, (261), 11 states have internal predecessors, (261), 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) [2024-11-09 10:58:09,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:09,805 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:09,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 10:58:10,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:10,010 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:10,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:10,010 INFO L85 PathProgramCache]: Analyzing trace with hash 498264771, now seen corresponding path program 1 times [2024-11-09 10:58:10,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:10,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4965448] [2024-11-09 10:58:10,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:10,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:10,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:10,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4965448] [2024-11-09 10:58:10,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4965448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:10,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336355767] [2024-11-09 10:58:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:10,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:10,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:10,183 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) [2024-11-09 10:58:10,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 10:58:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:10,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 10:58:10,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:10,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:10,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-09 10:58:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336355767] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:10,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:10,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-09 10:58:10,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599579725] [2024-11-09 10:58:10,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:10,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 10:58:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 10:58:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-09 10:58:10,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-11-09 10:58:10,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 299 flow. Second operand has 14 states, 14 states have (on average 23.357142857142858) internal successors, (327), 14 states have internal predecessors, (327), 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) [2024-11-09 10:58:10,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:10,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-11-09 10:58:10,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:11,411 INFO L124 PetriNetUnfolderBase]: 1943/3246 cut-off events. [2024-11-09 10:58:11,411 INFO L125 PetriNetUnfolderBase]: For 2209/2339 co-relation queries the response was YES. [2024-11-09 10:58:11,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8440 conditions, 3246 events. 1943/3246 cut-off events. For 2209/2339 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17888 event pairs, 828 based on Foata normal form. 0/3031 useless extension candidates. Maximal degree in co-relation 5169. Up to 2490 conditions per place. [2024-11-09 10:58:11,430 INFO L140 encePairwiseOnDemand]: 49/64 looper letters, 91 selfloop transitions, 17 changer transitions 0/114 dead transitions. [2024-11-09 10:58:11,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 661 flow [2024-11-09 10:58:11,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:58:11,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:58:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-11-09 10:58:11,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-09 10:58:11,432 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 299 flow. Second operand 7 states and 248 transitions. [2024-11-09 10:58:11,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 661 flow [2024-11-09 10:58:11,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 632 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:11,441 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 360 flow [2024-11-09 10:58:11,441 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2024-11-09 10:58:11,442 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-11-09 10:58:11,442 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 360 flow [2024-11-09 10:58:11,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.357142857142858) internal successors, (327), 14 states have internal predecessors, (327), 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) [2024-11-09 10:58:11,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:11,443 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:11,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 10:58:11,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:11,644 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:11,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash -756779850, now seen corresponding path program 2 times [2024-11-09 10:58:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:11,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988984327] [2024-11-09 10:58:11,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 10:58:11,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:11,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988984327] [2024-11-09 10:58:11,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988984327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:11,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564176762] [2024-11-09 10:58:11,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:58:11,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:11,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:11,823 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) [2024-11-09 10:58:11,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 10:58:11,902 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 10:58:11,903 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:58:11,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 10:58:11,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:11,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-09 10:58:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:58:12,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-09 10:58:12,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564176762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:12,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:12,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-09 10:58:12,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682363518] [2024-11-09 10:58:12,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:12,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 10:58:12,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:12,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 10:58:12,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-09 10:58:12,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-09 10:58:12,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 360 flow. Second operand has 12 states, 12 states have (on average 31.583333333333332) internal successors, (379), 12 states have internal predecessors, (379), 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) [2024-11-09 10:58:12,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:12,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-09 10:58:12,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:13,087 INFO L124 PetriNetUnfolderBase]: 1497/2717 cut-off events. [2024-11-09 10:58:13,088 INFO L125 PetriNetUnfolderBase]: For 1548/1548 co-relation queries the response was YES. [2024-11-09 10:58:13,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6924 conditions, 2717 events. 1497/2717 cut-off events. For 1548/1548 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16664 event pairs, 764 based on Foata normal form. 0/2641 useless extension candidates. Maximal degree in co-relation 4378. Up to 1722 conditions per place. [2024-11-09 10:58:13,138 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 82 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2024-11-09 10:58:13,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 721 flow [2024-11-09 10:58:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-11-09 10:58:13,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-11-09 10:58:13,140 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 360 flow. Second operand 5 states and 198 transitions. [2024-11-09 10:58:13,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 721 flow [2024-11-09 10:58:13,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 106 transitions, 680 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-09 10:58:13,146 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 347 flow [2024-11-09 10:58:13,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2024-11-09 10:58:13,149 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-11-09 10:58:13,150 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 347 flow [2024-11-09 10:58:13,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.583333333333332) internal successors, (379), 12 states have internal predecessors, (379), 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) [2024-11-09 10:58:13,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:13,150 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:13,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 10:58:13,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:13,351 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:13,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:13,352 INFO L85 PathProgramCache]: Analyzing trace with hash 950243014, now seen corresponding path program 2 times [2024-11-09 10:58:13,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:13,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811090061] [2024-11-09 10:58:13,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:13,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:58:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:13,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811090061] [2024-11-09 10:58:13,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811090061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:13,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:13,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:58:13,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182605602] [2024-11-09 10:58:13,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:13,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:13,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:13,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:13,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:13,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-11-09 10:58:13,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 347 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-11-09 10:58:13,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:13,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-11-09 10:58:13,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:13,961 INFO L124 PetriNetUnfolderBase]: 1495/2507 cut-off events. [2024-11-09 10:58:13,961 INFO L125 PetriNetUnfolderBase]: For 3023/3023 co-relation queries the response was YES. [2024-11-09 10:58:13,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 2507 events. 1495/2507 cut-off events. For 3023/3023 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13308 event pairs, 442 based on Foata normal form. 96/2508 useless extension candidates. Maximal degree in co-relation 4226. Up to 1264 conditions per place. [2024-11-09 10:58:13,983 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 42 selfloop transitions, 26 changer transitions 0/73 dead transitions. [2024-11-09 10:58:13,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 518 flow [2024-11-09 10:58:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-11-09 10:58:13,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-09 10:58:13,985 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 347 flow. Second operand 5 states and 152 transitions. [2024-11-09 10:58:13,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 518 flow [2024-11-09 10:58:13,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 484 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:58:13,989 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 343 flow [2024-11-09 10:58:13,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2024-11-09 10:58:13,990 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-09 10:58:13,990 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 343 flow [2024-11-09 10:58:13,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-11-09 10:58:13,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:13,991 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] [2024-11-09 10:58:13,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:58:13,991 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:13,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1765371169, now seen corresponding path program 1 times [2024-11-09 10:58:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:13,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719090619] [2024-11-09 10:58:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719090619] [2024-11-09 10:58:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719090619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:14,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:58:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436530540] [2024-11-09 10:58:14,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:14,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:58:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:58:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:58:14,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-11-09 10:58:14,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2024-11-09 10:58:14,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:14,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-11-09 10:58:14,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:14,261 INFO L124 PetriNetUnfolderBase]: 1391/2375 cut-off events. [2024-11-09 10:58:14,261 INFO L125 PetriNetUnfolderBase]: For 2254/2254 co-relation queries the response was YES. [2024-11-09 10:58:14,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6677 conditions, 2375 events. 1391/2375 cut-off events. For 2254/2254 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12852 event pairs, 344 based on Foata normal form. 2/2345 useless extension candidates. Maximal degree in co-relation 4307. Up to 1795 conditions per place. [2024-11-09 10:58:14,274 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 65 selfloop transitions, 13 changer transitions 1/84 dead transitions. [2024-11-09 10:58:14,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 600 flow [2024-11-09 10:58:14,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:58:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:58:14,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-09 10:58:14,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-11-09 10:58:14,276 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 343 flow. Second operand 3 states and 145 transitions. [2024-11-09 10:58:14,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 600 flow [2024-11-09 10:58:14,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:58:14,285 INFO L231 Difference]: Finished difference. Result has 55 places, 68 transitions, 388 flow [2024-11-09 10:58:14,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=55, PETRI_TRANSITIONS=68} [2024-11-09 10:58:14,286 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2024-11-09 10:58:14,286 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 68 transitions, 388 flow [2024-11-09 10:58:14,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2024-11-09 10:58:14,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:14,287 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] [2024-11-09 10:58:14,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:58:14,289 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:14,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1902787779, now seen corresponding path program 1 times [2024-11-09 10:58:14,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:14,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097578596] [2024-11-09 10:58:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:14,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:14,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097578596] [2024-11-09 10:58:14,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097578596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:14,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:14,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 10:58:14,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065921977] [2024-11-09 10:58:14,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:14,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:58:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:58:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:58:14,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:14,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 68 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 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) [2024-11-09 10:58:14,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:14,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:14,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:15,168 INFO L124 PetriNetUnfolderBase]: 1603/2613 cut-off events. [2024-11-09 10:58:15,169 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2024-11-09 10:58:15,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6913 conditions, 2613 events. 1603/2613 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13044 event pairs, 354 based on Foata normal form. 16/2385 useless extension candidates. Maximal degree in co-relation 4094. Up to 956 conditions per place. [2024-11-09 10:58:15,181 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 150 selfloop transitions, 40 changer transitions 0/191 dead transitions. [2024-11-09 10:58:15,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 191 transitions, 1158 flow [2024-11-09 10:58:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 10:58:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 10:58:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 475 transitions. [2024-11-09 10:58:15,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6184895833333334 [2024-11-09 10:58:15,184 INFO L175 Difference]: Start difference. First operand has 55 places, 68 transitions, 388 flow. Second operand 12 states and 475 transitions. [2024-11-09 10:58:15,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 191 transitions, 1158 flow [2024-11-09 10:58:15,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 191 transitions, 1105 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:15,191 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 572 flow [2024-11-09 10:58:15,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=572, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2024-11-09 10:58:15,193 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2024-11-09 10:58:15,193 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 572 flow [2024-11-09 10:58:15,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 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) [2024-11-09 10:58:15,193 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:15,193 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] [2024-11-09 10:58:15,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:58:15,194 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:15,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash 728177267, now seen corresponding path program 1 times [2024-11-09 10:58:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:15,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344991927] [2024-11-09 10:58:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:15,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344991927] [2024-11-09 10:58:15,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344991927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:15,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:58:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329119933] [2024-11-09 10:58:15,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:15,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:58:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:15,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:58:15,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:58:15,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-11-09 10:58:15,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 572 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-11-09 10:58:15,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:15,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-11-09 10:58:15,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:15,899 INFO L124 PetriNetUnfolderBase]: 1539/2561 cut-off events. [2024-11-09 10:58:15,899 INFO L125 PetriNetUnfolderBase]: For 4678/4686 co-relation queries the response was YES. [2024-11-09 10:58:15,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 2561 events. 1539/2561 cut-off events. For 4678/4686 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 13206 event pairs, 566 based on Foata normal form. 14/2493 useless extension candidates. Maximal degree in co-relation 5596. Up to 1400 conditions per place. [2024-11-09 10:58:15,919 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 114 selfloop transitions, 23 changer transitions 0/140 dead transitions. [2024-11-09 10:58:15,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 1066 flow [2024-11-09 10:58:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-11-09 10:58:15,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.715625 [2024-11-09 10:58:15,922 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 572 flow. Second operand 5 states and 229 transitions. [2024-11-09 10:58:15,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 1066 flow [2024-11-09 10:58:15,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 140 transitions, 1031 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 10:58:15,942 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 652 flow [2024-11-09 10:58:15,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=652, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2024-11-09 10:58:15,943 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 16 predicate places. [2024-11-09 10:58:15,944 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 652 flow [2024-11-09 10:58:15,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-11-09 10:58:15,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:15,944 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] [2024-11-09 10:58:15,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:58:15,945 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:15,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1859984861, now seen corresponding path program 2 times [2024-11-09 10:58:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:15,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516503806] [2024-11-09 10:58:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:15,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516503806] [2024-11-09 10:58:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516503806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:16,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:16,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:58:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356878084] [2024-11-09 10:58:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:16,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:16,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:16,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 652 flow. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 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) [2024-11-09 10:58:16,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:16,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:16,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:16,494 INFO L124 PetriNetUnfolderBase]: 1589/2617 cut-off events. [2024-11-09 10:58:16,495 INFO L125 PetriNetUnfolderBase]: For 6768/6768 co-relation queries the response was YES. [2024-11-09 10:58:16,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9223 conditions, 2617 events. 1589/2617 cut-off events. For 6768/6768 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12756 event pairs, 766 based on Foata normal form. 0/2527 useless extension candidates. Maximal degree in co-relation 8880. Up to 1916 conditions per place. [2024-11-09 10:58:16,507 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 100 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-11-09 10:58:16,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 126 transitions, 1160 flow [2024-11-09 10:58:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:58:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:58:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-11-09 10:58:16,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-11-09 10:58:16,508 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 652 flow. Second operand 6 states and 225 transitions. [2024-11-09 10:58:16,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 126 transitions, 1160 flow [2024-11-09 10:58:16,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 126 transitions, 1127 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:16,520 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 707 flow [2024-11-09 10:58:16,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=707, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-11-09 10:58:16,521 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2024-11-09 10:58:16,522 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 707 flow [2024-11-09 10:58:16,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 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) [2024-11-09 10:58:16,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:16,523 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] [2024-11-09 10:58:16,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:58:16,523 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:16,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash 248279321, now seen corresponding path program 1 times [2024-11-09 10:58:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:16,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965722373] [2024-11-09 10:58:16,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:16,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:16,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:16,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965722373] [2024-11-09 10:58:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965722373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:16,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:58:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040090780] [2024-11-09 10:58:16,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:16,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:16,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:16,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:16,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 707 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-09 10:58:16,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:16,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:16,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:17,090 INFO L124 PetriNetUnfolderBase]: 1803/3005 cut-off events. [2024-11-09 10:58:17,091 INFO L125 PetriNetUnfolderBase]: For 7696/7696 co-relation queries the response was YES. [2024-11-09 10:58:17,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10867 conditions, 3005 events. 1803/3005 cut-off events. For 7696/7696 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15876 event pairs, 642 based on Foata normal form. 24/2957 useless extension candidates. Maximal degree in co-relation 10100. Up to 1554 conditions per place. [2024-11-09 10:58:17,106 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 116 selfloop transitions, 37 changer transitions 0/154 dead transitions. [2024-11-09 10:58:17,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1405 flow [2024-11-09 10:58:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:58:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:58:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-11-09 10:58:17,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6536458333333334 [2024-11-09 10:58:17,108 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 707 flow. Second operand 6 states and 251 transitions. [2024-11-09 10:58:17,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1405 flow [2024-11-09 10:58:17,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 154 transitions, 1352 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:58:17,127 INFO L231 Difference]: Finished difference. Result has 87 places, 103 transitions, 993 flow [2024-11-09 10:58:17,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=993, PETRI_PLACES=87, PETRI_TRANSITIONS=103} [2024-11-09 10:58:17,128 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 26 predicate places. [2024-11-09 10:58:17,128 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 103 transitions, 993 flow [2024-11-09 10:58:17,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-09 10:58:17,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:17,128 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] [2024-11-09 10:58:17,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 10:58:17,129 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:17,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:17,129 INFO L85 PathProgramCache]: Analyzing trace with hash -391368953, now seen corresponding path program 2 times [2024-11-09 10:58:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:17,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578193510] [2024-11-09 10:58:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:17,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:17,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578193510] [2024-11-09 10:58:17,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578193510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:17,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:17,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:58:17,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634154903] [2024-11-09 10:58:17,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:17,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:58:17,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:17,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:58:17,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:58:17,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:17,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 103 transitions, 993 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2024-11-09 10:58:17,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:17,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:17,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:17,600 INFO L124 PetriNetUnfolderBase]: 1757/2893 cut-off events. [2024-11-09 10:58:17,600 INFO L125 PetriNetUnfolderBase]: For 8444/8444 co-relation queries the response was YES. [2024-11-09 10:58:17,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10870 conditions, 2893 events. 1757/2893 cut-off events. For 8444/8444 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14892 event pairs, 650 based on Foata normal form. 6/2833 useless extension candidates. Maximal degree in co-relation 10248. Up to 1554 conditions per place. [2024-11-09 10:58:17,616 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 103 selfloop transitions, 36 changer transitions 0/140 dead transitions. [2024-11-09 10:58:17,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 140 transitions, 1387 flow [2024-11-09 10:58:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:17,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2024-11-09 10:58:17,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.659375 [2024-11-09 10:58:17,618 INFO L175 Difference]: Start difference. First operand has 87 places, 103 transitions, 993 flow. Second operand 5 states and 211 transitions. [2024-11-09 10:58:17,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 140 transitions, 1387 flow [2024-11-09 10:58:17,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 140 transitions, 1354 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-09 10:58:17,641 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 1044 flow [2024-11-09 10:58:17,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1044, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2024-11-09 10:58:17,641 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2024-11-09 10:58:17,641 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 1044 flow [2024-11-09 10:58:17,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2024-11-09 10:58:17,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:17,642 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] [2024-11-09 10:58:17,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 10:58:17,642 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:17,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1641354571, now seen corresponding path program 3 times [2024-11-09 10:58:17,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:17,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851487918] [2024-11-09 10:58:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:17,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:17,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:17,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851487918] [2024-11-09 10:58:17,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851487918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:17,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:17,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 10:58:17,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152849648] [2024-11-09 10:58:17,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:17,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 10:58:17,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 10:58:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 10:58:17,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:17,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 1044 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2024-11-09 10:58:17,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:17,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:17,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:18,137 INFO L124 PetriNetUnfolderBase]: 1735/2847 cut-off events. [2024-11-09 10:58:18,138 INFO L125 PetriNetUnfolderBase]: For 10184/10184 co-relation queries the response was YES. [2024-11-09 10:58:18,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10918 conditions, 2847 events. 1735/2847 cut-off events. For 10184/10184 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14060 event pairs, 990 based on Foata normal form. 6/2787 useless extension candidates. Maximal degree in co-relation 10652. Up to 2450 conditions per place. [2024-11-09 10:58:18,157 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 86 selfloop transitions, 31 changer transitions 0/118 dead transitions. [2024-11-09 10:58:18,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 1330 flow [2024-11-09 10:58:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:58:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:58:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-09 10:58:18,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.596875 [2024-11-09 10:58:18,159 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 1044 flow. Second operand 5 states and 191 transitions. [2024-11-09 10:58:18,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 1330 flow [2024-11-09 10:58:18,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 118 transitions, 1267 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:18,182 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 1035 flow [2024-11-09 10:58:18,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-11-09 10:58:18,183 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2024-11-09 10:58:18,183 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 1035 flow [2024-11-09 10:58:18,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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) [2024-11-09 10:58:18,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:18,183 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] [2024-11-09 10:58:18,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 10:58:18,184 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:18,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:18,184 INFO L85 PathProgramCache]: Analyzing trace with hash 179616307, now seen corresponding path program 4 times [2024-11-09 10:58:18,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:18,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678431920] [2024-11-09 10:58:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:18,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:18,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:18,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678431920] [2024-11-09 10:58:18,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678431920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:18,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:18,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:58:18,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835339642] [2024-11-09 10:58:18,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:18,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:18,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:18,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:18,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:18,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:18,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 1035 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-09 10:58:18,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:18,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:18,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:18,720 INFO L124 PetriNetUnfolderBase]: 1855/3047 cut-off events. [2024-11-09 10:58:18,720 INFO L125 PetriNetUnfolderBase]: For 10662/10662 co-relation queries the response was YES. [2024-11-09 10:58:18,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11499 conditions, 3047 events. 1855/3047 cut-off events. For 10662/10662 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 15339 event pairs, 982 based on Foata normal form. 24/2997 useless extension candidates. Maximal degree in co-relation 10440. Up to 2482 conditions per place. [2024-11-09 10:58:18,734 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 97 selfloop transitions, 39 changer transitions 0/137 dead transitions. [2024-11-09 10:58:18,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 1520 flow [2024-11-09 10:58:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:58:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:58:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 230 transitions. [2024-11-09 10:58:18,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-11-09 10:58:18,736 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 1035 flow. Second operand 6 states and 230 transitions. [2024-11-09 10:58:18,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 1520 flow [2024-11-09 10:58:18,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 137 transitions, 1427 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-09 10:58:18,756 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 1154 flow [2024-11-09 10:58:18,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1154, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2024-11-09 10:58:18,757 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2024-11-09 10:58:18,757 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 1154 flow [2024-11-09 10:58:18,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-09 10:58:18,757 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:18,758 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] [2024-11-09 10:58:18,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 10:58:18,758 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:18,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:18,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1889151449, now seen corresponding path program 5 times [2024-11-09 10:58:18,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:18,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339492468] [2024-11-09 10:58:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:18,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:18,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339492468] [2024-11-09 10:58:18,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339492468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:18,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:18,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:58:18,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491231478] [2024-11-09 10:58:18,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:18,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:18,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:18,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:18,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 1154 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-09 10:58:18,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:18,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:18,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:19,235 INFO L124 PetriNetUnfolderBase]: 1951/3207 cut-off events. [2024-11-09 10:58:19,235 INFO L125 PetriNetUnfolderBase]: For 12159/12159 co-relation queries the response was YES. [2024-11-09 10:58:19,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12116 conditions, 3207 events. 1951/3207 cut-off events. For 12159/12159 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16425 event pairs, 1060 based on Foata normal form. 24/3149 useless extension candidates. Maximal degree in co-relation 11050. Up to 2642 conditions per place. [2024-11-09 10:58:19,247 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 106 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2024-11-09 10:58:19,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 1617 flow [2024-11-09 10:58:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:58:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:58:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-09 10:58:19,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-11-09 10:58:19,249 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 1154 flow. Second operand 6 states and 226 transitions. [2024-11-09 10:58:19,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 1617 flow [2024-11-09 10:58:19,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 1544 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:19,279 INFO L231 Difference]: Finished difference. Result has 96 places, 114 transitions, 1227 flow [2024-11-09 10:58:19,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1227, PETRI_PLACES=96, PETRI_TRANSITIONS=114} [2024-11-09 10:58:19,279 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-11-09 10:58:19,280 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 114 transitions, 1227 flow [2024-11-09 10:58:19,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-09 10:58:19,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:19,280 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] [2024-11-09 10:58:19,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 10:58:19,282 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:19,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:19,282 INFO L85 PathProgramCache]: Analyzing trace with hash 488131849, now seen corresponding path program 6 times [2024-11-09 10:58:19,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:19,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255590921] [2024-11-09 10:58:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:19,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:19,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255590921] [2024-11-09 10:58:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255590921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:19,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:19,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 10:58:19,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204616259] [2024-11-09 10:58:19,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:19,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 10:58:19,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 10:58:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-09 10:58:19,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:19,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 114 transitions, 1227 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-09 10:58:19,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:19,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:19,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:19,770 INFO L124 PetriNetUnfolderBase]: 1923/3173 cut-off events. [2024-11-09 10:58:19,771 INFO L125 PetriNetUnfolderBase]: For 12030/12030 co-relation queries the response was YES. [2024-11-09 10:58:19,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11884 conditions, 3173 events. 1923/3173 cut-off events. For 12030/12030 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 16185 event pairs, 750 based on Foata normal form. 24/3115 useless extension candidates. Maximal degree in co-relation 11206. Up to 1706 conditions per place. [2024-11-09 10:58:19,783 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 114 selfloop transitions, 42 changer transitions 0/157 dead transitions. [2024-11-09 10:58:19,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 1700 flow [2024-11-09 10:58:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:58:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:58:19,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 268 transitions. [2024-11-09 10:58:19,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-09 10:58:19,785 INFO L175 Difference]: Start difference. First operand has 96 places, 114 transitions, 1227 flow. Second operand 7 states and 268 transitions. [2024-11-09 10:58:19,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 1700 flow [2024-11-09 10:58:19,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 157 transitions, 1597 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-09 10:58:19,809 INFO L231 Difference]: Finished difference. Result has 96 places, 113 transitions, 1189 flow [2024-11-09 10:58:19,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=96, PETRI_TRANSITIONS=113} [2024-11-09 10:58:19,810 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-11-09 10:58:19,810 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 113 transitions, 1189 flow [2024-11-09 10:58:19,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 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) [2024-11-09 10:58:19,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:19,811 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, 1, 1] [2024-11-09 10:58:19,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 10:58:19,811 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:19,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash 983694879, now seen corresponding path program 1 times [2024-11-09 10:58:19,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:19,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851525646] [2024-11-09 10:58:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:19,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:19,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:19,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851525646] [2024-11-09 10:58:19,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851525646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:19,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716483021] [2024-11-09 10:58:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:19,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:19,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:19,986 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) [2024-11-09 10:58:19,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 10:58:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:20,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 10:58:20,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:20,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 10:58:20,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 10:58:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:20,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:20,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2024-11-09 10:58:20,557 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 10:58:20,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-09 10:58:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716483021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:20,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:20,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-09 10:58:20,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420113696] [2024-11-09 10:58:20,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:20,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 10:58:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:20,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 10:58:20,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-09 10:58:21,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-11-09 10:58:21,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 113 transitions, 1189 flow. Second operand has 18 states, 18 states have (on average 31.944444444444443) internal successors, (575), 18 states have internal predecessors, (575), 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) [2024-11-09 10:58:21,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:21,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-11-09 10:58:21,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:23,736 INFO L124 PetriNetUnfolderBase]: 3220/5453 cut-off events. [2024-11-09 10:58:23,737 INFO L125 PetriNetUnfolderBase]: For 14578/14580 co-relation queries the response was YES. [2024-11-09 10:58:23,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18903 conditions, 5453 events. 3220/5453 cut-off events. For 14578/14580 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 31469 event pairs, 301 based on Foata normal form. 47/5339 useless extension candidates. Maximal degree in co-relation 17863. Up to 901 conditions per place. [2024-11-09 10:58:23,758 INFO L140 encePairwiseOnDemand]: 41/64 looper letters, 258 selfloop transitions, 121 changer transitions 233/615 dead transitions. [2024-11-09 10:58:23,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 615 transitions, 4708 flow [2024-11-09 10:58:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 10:58:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-09 10:58:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1586 transitions. [2024-11-09 10:58:23,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521381578947368 [2024-11-09 10:58:23,763 INFO L175 Difference]: Start difference. First operand has 96 places, 113 transitions, 1189 flow. Second operand 38 states and 1586 transitions. [2024-11-09 10:58:23,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 615 transitions, 4708 flow [2024-11-09 10:58:23,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 615 transitions, 4446 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-09 10:58:23,797 INFO L231 Difference]: Finished difference. Result has 158 places, 172 transitions, 1899 flow [2024-11-09 10:58:23,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1899, PETRI_PLACES=158, PETRI_TRANSITIONS=172} [2024-11-09 10:58:23,798 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-09 10:58:23,798 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 172 transitions, 1899 flow [2024-11-09 10:58:23,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 31.944444444444443) internal successors, (575), 18 states have internal predecessors, (575), 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) [2024-11-09 10:58:23,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:23,799 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, 1, 1] [2024-11-09 10:58:23,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 10:58:24,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:24,004 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:24,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:24,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1204907785, now seen corresponding path program 2 times [2024-11-09 10:58:24,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:24,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340567782] [2024-11-09 10:58:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:24,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:24,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:24,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340567782] [2024-11-09 10:58:24,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340567782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:24,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 10:58:24,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413374901] [2024-11-09 10:58:24,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:24,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:58:24,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:58:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:58:28,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:58:28,348 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:28,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 172 transitions, 1899 flow. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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) [2024-11-09 10:58:28,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:28,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:28,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:28,943 INFO L124 PetriNetUnfolderBase]: 2294/3938 cut-off events. [2024-11-09 10:58:28,943 INFO L125 PetriNetUnfolderBase]: For 42851/42851 co-relation queries the response was YES. [2024-11-09 10:58:28,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22194 conditions, 3938 events. 2294/3938 cut-off events. For 42851/42851 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20973 event pairs, 958 based on Foata normal form. 36/3974 useless extension candidates. Maximal degree in co-relation 22049. Up to 2424 conditions per place. [2024-11-09 10:58:28,964 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 199 selfloop transitions, 59 changer transitions 8/267 dead transitions. [2024-11-09 10:58:28,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 267 transitions, 3374 flow [2024-11-09 10:58:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 10:58:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 10:58:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 343 transitions. [2024-11-09 10:58:28,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5954861111111112 [2024-11-09 10:58:28,966 INFO L175 Difference]: Start difference. First operand has 158 places, 172 transitions, 1899 flow. Second operand 9 states and 343 transitions. [2024-11-09 10:58:28,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 267 transitions, 3374 flow [2024-11-09 10:58:29,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 267 transitions, 2970 flow, removed 182 selfloop flow, removed 15 redundant places. [2024-11-09 10:58:29,068 INFO L231 Difference]: Finished difference. Result has 144 places, 188 transitions, 2022 flow [2024-11-09 10:58:29,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2022, PETRI_PLACES=144, PETRI_TRANSITIONS=188} [2024-11-09 10:58:29,069 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 83 predicate places. [2024-11-09 10:58:29,069 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 188 transitions, 2022 flow [2024-11-09 10:58:29,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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) [2024-11-09 10:58:29,069 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:29,069 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, 1, 1] [2024-11-09 10:58:29,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 10:58:29,070 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:29,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1862719187, now seen corresponding path program 3 times [2024-11-09 10:58:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:29,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223043265] [2024-11-09 10:58:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:29,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:29,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:29,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223043265] [2024-11-09 10:58:29,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223043265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:29,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:29,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 10:58:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480884373] [2024-11-09 10:58:29,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:29,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:58:29,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:58:29,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:58:29,394 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:29,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 188 transitions, 2022 flow. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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) [2024-11-09 10:58:29,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:29,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:29,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:29,951 INFO L124 PetriNetUnfolderBase]: 2351/4043 cut-off events. [2024-11-09 10:58:29,951 INFO L125 PetriNetUnfolderBase]: For 34897/34897 co-relation queries the response was YES. [2024-11-09 10:58:29,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21331 conditions, 4043 events. 2351/4043 cut-off events. For 34897/34897 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 21824 event pairs, 1109 based on Foata normal form. 36/4079 useless extension candidates. Maximal degree in co-relation 18826. Up to 3008 conditions per place. [2024-11-09 10:58:29,971 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 189 selfloop transitions, 64 changer transitions 9/263 dead transitions. [2024-11-09 10:58:29,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 263 transitions, 3200 flow [2024-11-09 10:58:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:58:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:58:29,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 289 transitions. [2024-11-09 10:58:29,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.564453125 [2024-11-09 10:58:29,972 INFO L175 Difference]: Start difference. First operand has 144 places, 188 transitions, 2022 flow. Second operand 8 states and 289 transitions. [2024-11-09 10:58:29,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 263 transitions, 3200 flow [2024-11-09 10:58:30,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 263 transitions, 3100 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-11-09 10:58:30,062 INFO L231 Difference]: Finished difference. Result has 149 places, 198 transitions, 2261 flow [2024-11-09 10:58:30,062 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2261, PETRI_PLACES=149, PETRI_TRANSITIONS=198} [2024-11-09 10:58:30,063 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 88 predicate places. [2024-11-09 10:58:30,063 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 198 transitions, 2261 flow [2024-11-09 10:58:30,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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) [2024-11-09 10:58:30,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:30,063 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, 1, 1] [2024-11-09 10:58:30,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 10:58:30,063 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:30,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:30,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2056061447, now seen corresponding path program 4 times [2024-11-09 10:58:30,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:30,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327123469] [2024-11-09 10:58:30,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:30,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:30,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:30,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327123469] [2024-11-09 10:58:30,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327123469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:30,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:30,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 10:58:30,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540422907] [2024-11-09 10:58:30,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:30,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:58:30,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:30,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:58:30,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:58:30,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:30,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 198 transitions, 2261 flow. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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) [2024-11-09 10:58:30,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:30,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:30,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:30,948 INFO L124 PetriNetUnfolderBase]: 2453/4235 cut-off events. [2024-11-09 10:58:30,949 INFO L125 PetriNetUnfolderBase]: For 37123/37123 co-relation queries the response was YES. [2024-11-09 10:58:30,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22512 conditions, 4235 events. 2453/4235 cut-off events. For 37123/37123 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 23354 event pairs, 1219 based on Foata normal form. 36/4271 useless extension candidates. Maximal degree in co-relation 19748. Up to 3450 conditions per place. [2024-11-09 10:58:30,972 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 214 selfloop transitions, 57 changer transitions 8/280 dead transitions. [2024-11-09 10:58:30,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 280 transitions, 3510 flow [2024-11-09 10:58:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 10:58:30,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 10:58:30,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 353 transitions. [2024-11-09 10:58:30,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515625 [2024-11-09 10:58:30,974 INFO L175 Difference]: Start difference. First operand has 149 places, 198 transitions, 2261 flow. Second operand 10 states and 353 transitions. [2024-11-09 10:58:30,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 280 transitions, 3510 flow [2024-11-09 10:58:31,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 280 transitions, 3432 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-09 10:58:31,057 INFO L231 Difference]: Finished difference. Result has 158 places, 210 transitions, 2534 flow [2024-11-09 10:58:31,057 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2534, PETRI_PLACES=158, PETRI_TRANSITIONS=210} [2024-11-09 10:58:31,057 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-09 10:58:31,057 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 210 transitions, 2534 flow [2024-11-09 10:58:31,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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) [2024-11-09 10:58:31,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:31,058 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, 1, 1] [2024-11-09 10:58:31,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 10:58:31,058 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:31,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:31,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1844943513, now seen corresponding path program 5 times [2024-11-09 10:58:31,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:31,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073843750] [2024-11-09 10:58:31,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:31,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:31,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:31,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073843750] [2024-11-09 10:58:31,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073843750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:31,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:31,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 10:58:31,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751273405] [2024-11-09 10:58:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:31,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 10:58:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 10:58:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 10:58:31,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:31,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 210 transitions, 2534 flow. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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) [2024-11-09 10:58:31,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:31,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:31,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:32,931 INFO L124 PetriNetUnfolderBase]: 2535/4377 cut-off events. [2024-11-09 10:58:32,931 INFO L125 PetriNetUnfolderBase]: For 41183/41183 co-relation queries the response was YES. [2024-11-09 10:58:32,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23851 conditions, 4377 events. 2535/4377 cut-off events. For 41183/41183 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24346 event pairs, 1107 based on Foata normal form. 36/4413 useless extension candidates. Maximal degree in co-relation 21651. Up to 2879 conditions per place. [2024-11-09 10:58:32,958 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 197 selfloop transitions, 86 changer transitions 10/294 dead transitions. [2024-11-09 10:58:32,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 294 transitions, 3858 flow [2024-11-09 10:58:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 10:58:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 10:58:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 290 transitions. [2024-11-09 10:58:32,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56640625 [2024-11-09 10:58:32,959 INFO L175 Difference]: Start difference. First operand has 158 places, 210 transitions, 2534 flow. Second operand 8 states and 290 transitions. [2024-11-09 10:58:32,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 294 transitions, 3858 flow [2024-11-09 10:58:33,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 294 transitions, 3743 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-09 10:58:33,042 INFO L231 Difference]: Finished difference. Result has 162 places, 219 transitions, 2802 flow [2024-11-09 10:58:33,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2802, PETRI_PLACES=162, PETRI_TRANSITIONS=219} [2024-11-09 10:58:33,043 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 101 predicate places. [2024-11-09 10:58:33,043 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 219 transitions, 2802 flow [2024-11-09 10:58:33,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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) [2024-11-09 10:58:33,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:33,044 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, 1, 1] [2024-11-09 10:58:33,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 10:58:33,044 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:33,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash -599957261, now seen corresponding path program 6 times [2024-11-09 10:58:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:33,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865889490] [2024-11-09 10:58:33,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:33,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 10:58:33,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:33,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865889490] [2024-11-09 10:58:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865889490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:58:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:58:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 10:58:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680410328] [2024-11-09 10:58:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:58:33,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:58:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:58:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:58:33,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:33,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 219 transitions, 2802 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2024-11-09 10:58:33,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:33,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:33,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:33,884 INFO L124 PetriNetUnfolderBase]: 2479/4321 cut-off events. [2024-11-09 10:58:33,885 INFO L125 PetriNetUnfolderBase]: For 42257/42257 co-relation queries the response was YES. [2024-11-09 10:58:33,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23869 conditions, 4321 events. 2479/4321 cut-off events. For 42257/42257 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 24176 event pairs, 962 based on Foata normal form. 54/4375 useless extension candidates. Maximal degree in co-relation 22183. Up to 2249 conditions per place. [2024-11-09 10:58:33,911 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 193 selfloop transitions, 94 changer transitions 17/305 dead transitions. [2024-11-09 10:58:33,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 305 transitions, 4176 flow [2024-11-09 10:58:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 10:58:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 10:58:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2024-11-09 10:58:33,912 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-11-09 10:58:33,912 INFO L175 Difference]: Start difference. First operand has 162 places, 219 transitions, 2802 flow. Second operand 7 states and 260 transitions. [2024-11-09 10:58:33,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 305 transitions, 4176 flow [2024-11-09 10:58:34,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 305 transitions, 3999 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-11-09 10:58:34,005 INFO L231 Difference]: Finished difference. Result has 163 places, 222 transitions, 2892 flow [2024-11-09 10:58:34,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2892, PETRI_PLACES=163, PETRI_TRANSITIONS=222} [2024-11-09 10:58:34,005 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 102 predicate places. [2024-11-09 10:58:34,005 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 222 transitions, 2892 flow [2024-11-09 10:58:34,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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) [2024-11-09 10:58:34,006 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:34,006 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, 1, 1, 1, 1, 1, 1] [2024-11-09 10:58:34,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 10:58:34,006 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:34,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1619639236, now seen corresponding path program 1 times [2024-11-09 10:58:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:34,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50331995] [2024-11-09 10:58:34,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:34,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 10:58:34,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50331995] [2024-11-09 10:58:34,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50331995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:34,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799701477] [2024-11-09 10:58:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:34,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:34,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:34,174 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) [2024-11-09 10:58:34,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 10:58:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:34,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 10:58:34,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:34,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:34,926 INFO L349 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2024-11-09 10:58:34,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 53 [2024-11-09 10:58:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:58:35,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799701477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:35,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:35,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 27 [2024-11-09 10:58:35,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607522285] [2024-11-09 10:58:35,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:35,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 10:58:35,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:35,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 10:58:35,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2024-11-09 10:58:37,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:37,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 222 transitions, 2892 flow. Second operand has 27 states, 27 states have (on average 28.88888888888889) internal successors, (780), 27 states have internal predecessors, (780), 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) [2024-11-09 10:58:37,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:37,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:37,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:39,184 INFO L124 PetriNetUnfolderBase]: 3153/5458 cut-off events. [2024-11-09 10:58:39,184 INFO L125 PetriNetUnfolderBase]: For 57796/57796 co-relation queries the response was YES. [2024-11-09 10:58:39,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30918 conditions, 5458 events. 3153/5458 cut-off events. For 57796/57796 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 31673 event pairs, 584 based on Foata normal form. 44/5502 useless extension candidates. Maximal degree in co-relation 29214. Up to 2886 conditions per place. [2024-11-09 10:58:39,222 INFO L140 encePairwiseOnDemand]: 42/64 looper letters, 258 selfloop transitions, 110 changer transitions 127/496 dead transitions. [2024-11-09 10:58:39,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 496 transitions, 6451 flow [2024-11-09 10:58:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 10:58:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-09 10:58:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1236 transitions. [2024-11-09 10:58:39,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517857142857143 [2024-11-09 10:58:39,225 INFO L175 Difference]: Start difference. First operand has 163 places, 222 transitions, 2892 flow. Second operand 35 states and 1236 transitions. [2024-11-09 10:58:39,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 496 transitions, 6451 flow [2024-11-09 10:58:39,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 496 transitions, 6261 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-09 10:58:39,363 INFO L231 Difference]: Finished difference. Result has 203 places, 216 transitions, 3038 flow [2024-11-09 10:58:39,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2778, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3038, PETRI_PLACES=203, PETRI_TRANSITIONS=216} [2024-11-09 10:58:39,364 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 142 predicate places. [2024-11-09 10:58:39,364 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 216 transitions, 3038 flow [2024-11-09 10:58:39,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 28.88888888888889) internal successors, (780), 27 states have internal predecessors, (780), 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) [2024-11-09 10:58:39,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:58:39,365 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, 1] [2024-11-09 10:58:39,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 10:58:39,565 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,SelfDestructingSolverStorable27 [2024-11-09 10:58:39,565 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:58:39,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:58:39,566 INFO L85 PathProgramCache]: Analyzing trace with hash 732822712, now seen corresponding path program 1 times [2024-11-09 10:58:39,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:58:39,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615979541] [2024-11-09 10:58:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:39,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:58:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:58:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:58:39,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615979541] [2024-11-09 10:58:39,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615979541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:58:39,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363002760] [2024-11-09 10:58:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:58:39,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:58:39,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:58:39,833 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) [2024-11-09 10:58:39,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 10:58:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:58:39,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 10:58:39,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:58:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:58:40,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:58:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:58:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363002760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:58:40,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:58:40,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2024-11-09 10:58:40,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015545218] [2024-11-09 10:58:40,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:58:40,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 10:58:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:58:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 10:58:40,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2024-11-09 10:58:40,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:58:40,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 216 transitions, 3038 flow. Second operand has 24 states, 24 states have (on average 28.166666666666668) internal successors, (676), 24 states have internal predecessors, (676), 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) [2024-11-09 10:58:40,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:58:40,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:58:40,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:58:44,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:58:48,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:58:50,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:58:55,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:59:03,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:59:03,980 INFO L124 PetriNetUnfolderBase]: 2921/5012 cut-off events. [2024-11-09 10:59:03,980 INFO L125 PetriNetUnfolderBase]: For 62722/62722 co-relation queries the response was YES. [2024-11-09 10:59:04,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30489 conditions, 5012 events. 2921/5012 cut-off events. For 62722/62722 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 28669 event pairs, 1325 based on Foata normal form. 36/5048 useless extension candidates. Maximal degree in co-relation 30390. Up to 3541 conditions per place. [2024-11-09 10:59:04,017 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 304 selfloop transitions, 122 changer transitions 0/427 dead transitions. [2024-11-09 10:59:04,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 427 transitions, 5589 flow [2024-11-09 10:59:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-09 10:59:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-09 10:59:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1201 transitions. [2024-11-09 10:59:04,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5071790540540541 [2024-11-09 10:59:04,020 INFO L175 Difference]: Start difference. First operand has 203 places, 216 transitions, 3038 flow. Second operand 37 states and 1201 transitions. [2024-11-09 10:59:04,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 427 transitions, 5589 flow [2024-11-09 10:59:04,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 427 transitions, 5030 flow, removed 219 selfloop flow, removed 19 redundant places. [2024-11-09 10:59:04,192 INFO L231 Difference]: Finished difference. Result has 220 places, 286 transitions, 3837 flow [2024-11-09 10:59:04,192 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3837, PETRI_PLACES=220, PETRI_TRANSITIONS=286} [2024-11-09 10:59:04,193 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 159 predicate places. [2024-11-09 10:59:04,193 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 286 transitions, 3837 flow [2024-11-09 10:59:04,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 28.166666666666668) internal successors, (676), 24 states have internal predecessors, (676), 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) [2024-11-09 10:59:04,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:59:04,194 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, 1] [2024-11-09 10:59:04,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 10:59:04,394 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,SelfDestructingSolverStorable28 [2024-11-09 10:59:04,395 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-09 10:59:04,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:59:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash -801424258, now seen corresponding path program 2 times [2024-11-09 10:59:04,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:59:04,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279817727] [2024-11-09 10:59:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:59:04,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:59:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:59:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:59:04,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:59:04,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279817727] [2024-11-09 10:59:04,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279817727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:59:04,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983986382] [2024-11-09 10:59:04,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 10:59:04,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:59:04,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:59:04,957 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) [2024-11-09 10:59:04,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 10:59:05,093 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 10:59:05,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 10:59:05,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 10:59:05,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:59:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:59:05,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:59:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 10:59:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983986382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:59:06,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:59:06,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-09 10:59:06,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969869085] [2024-11-09 10:59:06,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:59:06,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 10:59:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:59:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 10:59:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930 [2024-11-09 10:59:06,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-09 10:59:06,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 286 transitions, 3837 flow. Second operand has 31 states, 31 states have (on average 27.741935483870968) internal successors, (860), 31 states have internal predecessors, (860), 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) [2024-11-09 10:59:06,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:59:06,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-09 10:59:06,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:59:10,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:59:13,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 10:59:17,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []