./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/unroll-cond-4.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 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:24:23,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:24:23,240 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:24:23,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:24:23,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:24:23,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:24:23,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:24:23,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:24:23,279 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:24:23,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:24:23,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:24:23,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:24:23,282 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:24:23,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:24:23,284 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:24:23,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:24:23,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:24:23,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:24:23,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:24:23,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:24:23,286 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:24:23,290 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:24:23,290 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:24:23,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:24:23,291 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:24:23,291 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:24:23,291 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:24:23,291 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:24:23,292 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:24:23,292 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:24:23,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:24:23,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:24:23,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:24:23,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:23,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:24:23,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:24:23,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:24:23,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:24:23,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:24:23,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:24:23,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:24:23,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:24:23,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 [2024-11-10 18:24:23,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:24:23,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:24:23,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:24:23,591 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:24:23,592 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:24:23,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-11-10 18:24:25,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:24:25,323 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:24:25,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-11-10 18:24:25,337 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b878b8b/342dc3c51d464b9ca4d6c4ef02ba6770/FLAG434462f3a [2024-11-10 18:24:25,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b878b8b/342dc3c51d464b9ca4d6c4ef02ba6770 [2024-11-10 18:24:25,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:24:25,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:24:25,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:25,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:24:25,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:24:25,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159870ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25, skipping insertion in model container [2024-11-10 18:24:25,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:24:25,711 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-10 18:24:25,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:25,731 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:24:25,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:24:25,784 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:24:25,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25 WrapperNode [2024-11-10 18:24:25,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:24:25,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:25,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:24:25,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:24:25,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,843 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 175 [2024-11-10 18:24:25,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:24:25,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:24:25,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:24:25,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:24:25,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,890 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 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]. [2024-11-10 18:24:25,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,905 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,907 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:24:25,918 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:24:25,918 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:24:25,918 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:24:25,920 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (1/1) ... [2024-11-10 18:24:25,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:24:25,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:25,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:24:25,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:24:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:24:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:24:26,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:24:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:24:26,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:24:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:24:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 18:24:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 18:24:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 18:24:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 18:24:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:24:26,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:24:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 18:24:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 18:24:26,024 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:24:26,144 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:24:26,146 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:24:26,507 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:24:26,509 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:24:26,775 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:24:26,777 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:24:26,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:26 BoogieIcfgContainer [2024-11-10 18:24:26,778 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:24:26,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:24:26,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:24:26,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:24:26,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:24:25" (1/3) ... [2024-11-10 18:24:26,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d6ab30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:26, skipping insertion in model container [2024-11-10 18:24:26,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:24:25" (2/3) ... [2024-11-10 18:24:26,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d6ab30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:24:26, skipping insertion in model container [2024-11-10 18:24:26,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:24:26" (3/3) ... [2024-11-10 18:24:26,790 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2024-11-10 18:24:26,804 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:24:26,805 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-11-10 18:24:26,805 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:24:26,879 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 18:24:26,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 64 transitions, 142 flow [2024-11-10 18:24:26,997 INFO L124 PetriNetUnfolderBase]: 9/62 cut-off events. [2024-11-10 18:24:26,998 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 18:24:27,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 62 events. 9/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 165 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-11-10 18:24:27,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 64 transitions, 142 flow [2024-11-10 18:24:27,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 61 transitions, 134 flow [2024-11-10 18:24:27,022 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:24:27,030 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;@58c668e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:24:27,030 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-10 18:24:27,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:24:27,034 INFO L124 PetriNetUnfolderBase]: 2/7 cut-off events. [2024-11-10 18:24:27,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 18:24:27,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:27,035 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:24:27,036 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:27,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash 16322219, now seen corresponding path program 1 times [2024-11-10 18:24:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712412440] [2024-11-10 18:24:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:27,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:27,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:27,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712412440] [2024-11-10 18:24:27,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712412440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:27,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:27,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 18:24:27,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848578216] [2024-11-10 18:24:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:27,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:27,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:27,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:27,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:27,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-11-10 18:24:27,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:27,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:27,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-11-10 18:24:27,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:27,626 INFO L124 PetriNetUnfolderBase]: 191/423 cut-off events. [2024-11-10 18:24:27,627 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-10 18:24:27,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 423 events. 191/423 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2253 event pairs, 120 based on Foata normal form. 36/388 useless extension candidates. Maximal degree in co-relation 652. Up to 298 conditions per place. [2024-11-10 18:24:27,634 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 26 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-11-10 18:24:27,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 178 flow [2024-11-10 18:24:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-10 18:24:27,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-11-10 18:24:27,649 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 134 flow. Second operand 3 states and 123 transitions. [2024-11-10 18:24:27,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 178 flow [2024-11-10 18:24:27,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 170 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:24:27,660 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 118 flow [2024-11-10 18:24:27,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2024-11-10 18:24:27,668 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-11-10 18:24:27,669 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 118 flow [2024-11-10 18:24:27,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:27,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:27,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-10 18:24:27,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:24:27,670 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:27,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash 16322220, now seen corresponding path program 1 times [2024-11-10 18:24:27,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:27,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393474773] [2024-11-10 18:24:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:27,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:27,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:27,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393474773] [2024-11-10 18:24:27,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393474773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:27,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:27,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:27,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436870588] [2024-11-10 18:24:27,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:27,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:24:27,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:24:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:24:28,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-11-10 18:24:28,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:28,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:28,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-11-10 18:24:28,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:28,223 INFO L124 PetriNetUnfolderBase]: 192/428 cut-off events. [2024-11-10 18:24:28,223 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-10 18:24:28,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 428 events. 192/428 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2277 event pairs, 120 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 717. Up to 303 conditions per place. [2024-11-10 18:24:28,230 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 29 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-10 18:24:28,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 190 flow [2024-11-10 18:24:28,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-10 18:24:28,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-11-10 18:24:28,234 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 118 flow. Second operand 3 states and 123 transitions. [2024-11-10 18:24:28,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 190 flow [2024-11-10 18:24:28,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:28,237 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 133 flow [2024-11-10 18:24:28,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2024-11-10 18:24:28,238 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2024-11-10 18:24:28,239 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 133 flow [2024-11-10 18:24:28,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:28,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:28,240 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-10 18:24:28,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:24:28,241 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:28,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:28,243 INFO L85 PathProgramCache]: Analyzing trace with hash 924454771, now seen corresponding path program 1 times [2024-11-10 18:24:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:28,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714439736] [2024-11-10 18:24:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:28,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:28,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714439736] [2024-11-10 18:24:28,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714439736] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:28,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791720494] [2024-11-10 18:24:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:28,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:28,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:28,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:28,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:24:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:28,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:24:28,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:28,815 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 8 treesize of output 1 [2024-11-10 18:24:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:28,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791720494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:29,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-10 18:24:29,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271668235] [2024-11-10 18:24:29,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:29,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 18:24:29,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:29,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 18:24:29,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 18:24:29,381 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-10 18:24:29,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 133 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) [2024-11-10 18:24:29,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:29,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-10 18:24:29,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:29,646 INFO L124 PetriNetUnfolderBase]: 192/427 cut-off events. [2024-11-10 18:24:29,647 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:24:29,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 427 events. 192/427 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2263 event pairs, 120 based on Foata normal form. 0/354 useless extension candidates. Maximal degree in co-relation 717. Up to 299 conditions per place. [2024-11-10 18:24:29,653 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 27 selfloop transitions, 6 changer transitions 0/58 dead transitions. [2024-11-10 18:24:29,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 199 flow [2024-11-10 18:24:29,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-11-10 18:24:29,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.559375 [2024-11-10 18:24:29,657 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 133 flow. Second operand 5 states and 179 transitions. [2024-11-10 18:24:29,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 199 flow [2024-11-10 18:24:29,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:29,661 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 146 flow [2024-11-10 18:24:29,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2024-11-10 18:24:29,662 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-11-10 18:24:29,662 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 146 flow [2024-11-10 18:24:29,662 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) [2024-11-10 18:24:29,663 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:29,663 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:29,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:29,867 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 [2024-11-10 18:24:29,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:29,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1659387699, now seen corresponding path program 1 times [2024-11-10 18:24:29,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:29,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838146026] [2024-11-10 18:24:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:29,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:29,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:29,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838146026] [2024-11-10 18:24:29,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838146026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:29,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:29,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254882981] [2024-11-10 18:24:29,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:29,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:24:29,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:29,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:24:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:24:29,992 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 64 [2024-11-10 18:24:29,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:29,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:29,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 64 [2024-11-10 18:24:29,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:30,082 INFO L124 PetriNetUnfolderBase]: 192/384 cut-off events. [2024-11-10 18:24:30,083 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-10 18:24:30,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 384 events. 192/384 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1804 event pairs, 120 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 684. Up to 298 conditions per place. [2024-11-10 18:24:30,087 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 28 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2024-11-10 18:24:30,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 192 flow [2024-11-10 18:24:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 18:24:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 18:24:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-10 18:24:30,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-11-10 18:24:30,092 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 146 flow. Second operand 4 states and 124 transitions. [2024-11-10 18:24:30,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 192 flow [2024-11-10 18:24:30,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 179 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:30,094 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 123 flow [2024-11-10 18:24:30,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2024-11-10 18:24:30,096 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2024-11-10 18:24:30,096 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 123 flow [2024-11-10 18:24:30,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:30,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:30,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:30,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:24:30,097 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:30,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1659387700, now seen corresponding path program 1 times [2024-11-10 18:24:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033340196] [2024-11-10 18:24:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:30,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:30,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:30,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033340196] [2024-11-10 18:24:30,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033340196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:30,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:30,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:30,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701116124] [2024-11-10 18:24:30,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:30,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:30,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:30,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:30,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-11-10 18:24:30,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:30,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:30,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-11-10 18:24:30,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:30,256 INFO L124 PetriNetUnfolderBase]: 191/382 cut-off events. [2024-11-10 18:24:30,257 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-10 18:24:30,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 382 events. 191/382 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1807 event pairs, 120 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 674. Up to 302 conditions per place. [2024-11-10 18:24:30,260 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 29 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-11-10 18:24:30,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 180 flow [2024-11-10 18:24:30,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-11-10 18:24:30,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-11-10 18:24:30,261 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 123 flow. Second operand 3 states and 122 transitions. [2024-11-10 18:24:30,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 180 flow [2024-11-10 18:24:30,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 177 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:30,263 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 123 flow [2024-11-10 18:24:30,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-10 18:24:30,264 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -8 predicate places. [2024-11-10 18:24:30,264 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 123 flow [2024-11-10 18:24:30,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:30,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:30,264 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:30,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:24:30,265 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:30,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash 754688717, now seen corresponding path program 1 times [2024-11-10 18:24:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243399670] [2024-11-10 18:24:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:30,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:30,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243399670] [2024-11-10 18:24:30,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243399670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:30,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51359818] [2024-11-10 18:24:30,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:30,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:30,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:30,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:30,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:24:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:30,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:24:30,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:30,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:30,638 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 [2024-11-10 18:24:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:30,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51359818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:30,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:30,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-10 18:24:30,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396094230] [2024-11-10 18:24:30,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:30,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 18:24:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:30,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 18:24:30,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-10 18:24:30,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-11-10 18:24:30,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 123 flow. Second operand has 9 states, 9 states have (on average 32.111111111111114) internal successors, (289), 9 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:30,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:30,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-11-10 18:24:30,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:31,085 INFO L124 PetriNetUnfolderBase]: 403/770 cut-off events. [2024-11-10 18:24:31,085 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-10 18:24:31,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 770 events. 403/770 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4218 event pairs, 129 based on Foata normal form. 0/696 useless extension candidates. Maximal degree in co-relation 1411. Up to 357 conditions per place. [2024-11-10 18:24:31,091 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 49 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-11-10 18:24:31,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 276 flow [2024-11-10 18:24:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 204 transitions. [2024-11-10 18:24:31,093 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-11-10 18:24:31,093 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 123 flow. Second operand 5 states and 204 transitions. [2024-11-10 18:24:31,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 276 flow [2024-11-10 18:24:31,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:31,095 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 135 flow [2024-11-10 18:24:31,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-11-10 18:24:31,096 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-11-10 18:24:31,096 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 135 flow [2024-11-10 18:24:31,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.111111111111114) internal successors, (289), 9 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:31,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:31,096 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:31,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:24:31,300 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 [2024-11-10 18:24:31,301 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:31,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1898382198, now seen corresponding path program 1 times [2024-11-10 18:24:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560267479] [2024-11-10 18:24:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:31,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560267479] [2024-11-10 18:24:31,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560267479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:31,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767610775] [2024-11-10 18:24:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:31,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:31,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:31,553 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:31,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:24:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:31,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-10 18:24:31,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:31,736 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:31,818 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 [2024-11-10 18:24:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:31,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767610775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:31,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:31,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-10 18:24:31,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495595525] [2024-11-10 18:24:31,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:31,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 18:24:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 18:24:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:24:31,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-11-10 18:24:31,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 135 flow. Second operand has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:31,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:31,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-11-10 18:24:31,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:32,272 INFO L124 PetriNetUnfolderBase]: 710/1264 cut-off events. [2024-11-10 18:24:32,272 INFO L125 PetriNetUnfolderBase]: For 137/171 co-relation queries the response was YES. [2024-11-10 18:24:32,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 1264 events. 710/1264 cut-off events. For 137/171 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7164 event pairs, 144 based on Foata normal form. 0/1108 useless extension candidates. Maximal degree in co-relation 2545. Up to 810 conditions per place. [2024-11-10 18:24:32,282 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 49 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2024-11-10 18:24:32,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 67 transitions, 290 flow [2024-11-10 18:24:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-11-10 18:24:32,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-11-10 18:24:32,284 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 135 flow. Second operand 5 states and 178 transitions. [2024-11-10 18:24:32,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 67 transitions, 290 flow [2024-11-10 18:24:32,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:32,287 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 172 flow [2024-11-10 18:24:32,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-11-10 18:24:32,288 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2024-11-10 18:24:32,288 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 172 flow [2024-11-10 18:24:32,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.4) internal successors, (264), 10 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:32,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:32,289 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:32,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 18:24:32,492 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 [2024-11-10 18:24:32,493 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:32,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1279694584, now seen corresponding path program 1 times [2024-11-10 18:24:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:32,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734330485] [2024-11-10 18:24:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:32,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:32,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:32,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734330485] [2024-11-10 18:24:32,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734330485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:32,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167197551] [2024-11-10 18:24:32,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:32,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:32,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:32,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:32,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 18:24:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:32,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:24:32,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:32,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:32,925 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 [2024-11-10 18:24:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:33,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167197551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:33,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:33,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2024-11-10 18:24:33,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698286665] [2024-11-10 18:24:33,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:33,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 18:24:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:33,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 18:24:33,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-11-10 18:24:33,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-10 18:24:33,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 172 flow. Second operand has 15 states, 15 states have (on average 25.333333333333332) internal successors, (380), 15 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:33,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:33,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-10 18:24:33,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:34,140 INFO L124 PetriNetUnfolderBase]: 1003/1814 cut-off events. [2024-11-10 18:24:34,141 INFO L125 PetriNetUnfolderBase]: For 274/314 co-relation queries the response was YES. [2024-11-10 18:24:34,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 1814 events. 1003/1814 cut-off events. For 274/314 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11401 event pairs, 414 based on Foata normal form. 0/1621 useless extension candidates. Maximal degree in co-relation 2502. Up to 1168 conditions per place. [2024-11-10 18:24:34,154 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 67 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-11-10 18:24:34,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 443 flow [2024-11-10 18:24:34,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 18:24:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 18:24:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-11-10 18:24:34,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.505859375 [2024-11-10 18:24:34,157 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 172 flow. Second operand 8 states and 259 transitions. [2024-11-10 18:24:34,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 443 flow [2024-11-10 18:24:34,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 429 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:34,163 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 270 flow [2024-11-10 18:24:34,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=270, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2024-11-10 18:24:34,165 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-11-10 18:24:34,166 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 270 flow [2024-11-10 18:24:34,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 25.333333333333332) internal successors, (380), 15 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:34,167 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:34,167 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:34,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 18:24:34,367 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 [2024-11-10 18:24:34,368 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:34,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1221677184, now seen corresponding path program 1 times [2024-11-10 18:24:34,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:34,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473430404] [2024-11-10 18:24:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:34,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:34,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473430404] [2024-11-10 18:24:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473430404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321865383] [2024-11-10 18:24:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:34,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:34,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:34,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:34,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 18:24:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:34,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:24:34,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:34,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:34,790 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 [2024-11-10 18:24:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:35,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321865383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:35,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:35,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 16 [2024-11-10 18:24:35,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687568263] [2024-11-10 18:24:35,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:35,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 18:24:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 18:24:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-10 18:24:35,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-10 18:24:35,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 270 flow. Second operand has 18 states, 18 states have (on average 30.77777777777778) internal successors, (554), 18 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:35,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:35,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-10 18:24:35,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:36,368 INFO L124 PetriNetUnfolderBase]: 1213/2380 cut-off events. [2024-11-10 18:24:36,368 INFO L125 PetriNetUnfolderBase]: For 764/791 co-relation queries the response was YES. [2024-11-10 18:24:36,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 2380 events. 1213/2380 cut-off events. For 764/791 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 16442 event pairs, 693 based on Foata normal form. 0/2257 useless extension candidates. Maximal degree in co-relation 3534. Up to 936 conditions per place. [2024-11-10 18:24:36,387 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 108 selfloop transitions, 10 changer transitions 0/134 dead transitions. [2024-11-10 18:24:36,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 134 transitions, 748 flow [2024-11-10 18:24:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:24:36,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:24:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 360 transitions. [2024-11-10 18:24:36,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-10 18:24:36,390 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 270 flow. Second operand 9 states and 360 transitions. [2024-11-10 18:24:36,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 134 transitions, 748 flow [2024-11-10 18:24:36,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 134 transitions, 744 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:36,395 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 311 flow [2024-11-10 18:24:36,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-11-10 18:24:36,396 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 16 predicate places. [2024-11-10 18:24:36,396 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 311 flow [2024-11-10 18:24:36,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 30.77777777777778) internal successors, (554), 18 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:36,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:36,397 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:36,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 18:24:36,601 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 [2024-11-10 18:24:36,602 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:36,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:36,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1424851106, now seen corresponding path program 1 times [2024-11-10 18:24:36,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:36,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036210633] [2024-11-10 18:24:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:36,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:36,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036210633] [2024-11-10 18:24:36,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036210633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:36,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049227975] [2024-11-10 18:24:36,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:36,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:36,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:36,791 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:36,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 18:24:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:36,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 18:24:36,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:37,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:37,096 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 [2024-11-10 18:24:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:37,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049227975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:37,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:37,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2024-11-10 18:24:37,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758922271] [2024-11-10 18:24:37,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:37,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:24:37,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:24:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:24:37,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-10 18:24:37,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 311 flow. Second operand has 19 states, 19 states have (on average 25.0) internal successors, (475), 19 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:37,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:37,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-10 18:24:37,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:38,566 INFO L124 PetriNetUnfolderBase]: 1325/2350 cut-off events. [2024-11-10 18:24:38,567 INFO L125 PetriNetUnfolderBase]: For 1667/1739 co-relation queries the response was YES. [2024-11-10 18:24:38,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5868 conditions, 2350 events. 1325/2350 cut-off events. For 1667/1739 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 14940 event pairs, 687 based on Foata normal form. 32/2215 useless extension candidates. Maximal degree in co-relation 4978. Up to 1104 conditions per place. [2024-11-10 18:24:38,588 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 81 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-11-10 18:24:38,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 660 flow [2024-11-10 18:24:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 18:24:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 18:24:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 303 transitions. [2024-11-10 18:24:38,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-11-10 18:24:38,591 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 311 flow. Second operand 9 states and 303 transitions. [2024-11-10 18:24:38,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 660 flow [2024-11-10 18:24:38,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 637 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-10 18:24:38,597 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 408 flow [2024-11-10 18:24:38,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=408, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2024-11-10 18:24:38,599 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2024-11-10 18:24:38,599 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 408 flow [2024-11-10 18:24:38,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 25.0) internal successors, (475), 19 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:38,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:38,599 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:38,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 18:24:38,803 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 [2024-11-10 18:24:38,804 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:38,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 226835545, now seen corresponding path program 2 times [2024-11-10 18:24:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:38,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933459483] [2024-11-10 18:24:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:38,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-10 18:24:39,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933459483] [2024-11-10 18:24:39,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933459483] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:39,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396247488] [2024-11-10 18:24:39,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:24:39,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:39,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:39,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:39,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 18:24:39,086 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 18:24:39,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:39,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-10 18:24:39,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:39,109 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 8 treesize of output 1 [2024-11-10 18:24:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 18:24:39,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 18:24:39,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396247488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:39,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 10 [2024-11-10 18:24:39,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647394974] [2024-11-10 18:24:39,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:39,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 18:24:39,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 18:24:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-10 18:24:39,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-10 18:24:39,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 408 flow. Second operand has 12 states, 12 states have (on average 31.75) internal successors, (381), 12 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:39,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:39,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-10 18:24:39,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:40,269 INFO L124 PetriNetUnfolderBase]: 1100/2019 cut-off events. [2024-11-10 18:24:40,270 INFO L125 PetriNetUnfolderBase]: For 2241/2281 co-relation queries the response was YES. [2024-11-10 18:24:40,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5653 conditions, 2019 events. 1100/2019 cut-off events. For 2241/2281 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12672 event pairs, 549 based on Foata normal form. 0/1923 useless extension candidates. Maximal degree in co-relation 4879. Up to 1273 conditions per place. [2024-11-10 18:24:40,288 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 80 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-11-10 18:24:40,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 769 flow [2024-11-10 18:24:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-10 18:24:40,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.596875 [2024-11-10 18:24:40,290 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 408 flow. Second operand 5 states and 191 transitions. [2024-11-10 18:24:40,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 769 flow [2024-11-10 18:24:40,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 737 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-10 18:24:40,304 INFO L231 Difference]: Finished difference. Result has 77 places, 72 transitions, 394 flow [2024-11-10 18:24:40,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=77, PETRI_TRANSITIONS=72} [2024-11-10 18:24:40,306 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 18 predicate places. [2024-11-10 18:24:40,306 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 72 transitions, 394 flow [2024-11-10 18:24:40,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.75) internal successors, (381), 12 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:40,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:40,306 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:40,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:40,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:40,511 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:40,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1566759983, now seen corresponding path program 2 times [2024-11-10 18:24:40,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:40,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081436735] [2024-11-10 18:24:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:24:40,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081436735] [2024-11-10 18:24:40,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081436735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:40,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241323205] [2024-11-10 18:24:40,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:24:40,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:40,745 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:40,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 18:24:40,823 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 18:24:40,823 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:40,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 18:24:40,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:40,835 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 [2024-11-10 18:24:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:24:41,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:24:41,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241323205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:41,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:24:41,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2024-11-10 18:24:41,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399827180] [2024-11-10 18:24:41,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:41,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:41,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:41,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:41,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:24:41,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 64 [2024-11-10 18:24:41,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 72 transitions, 394 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:41,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:41,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 64 [2024-11-10 18:24:41,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:41,661 INFO L124 PetriNetUnfolderBase]: 1310/2313 cut-off events. [2024-11-10 18:24:41,661 INFO L125 PetriNetUnfolderBase]: For 2967/2967 co-relation queries the response was YES. [2024-11-10 18:24:41,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6745 conditions, 2313 events. 1310/2313 cut-off events. For 2967/2967 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14442 event pairs, 100 based on Foata normal form. 16/2201 useless extension candidates. Maximal degree in co-relation 5747. Up to 1384 conditions per place. [2024-11-10 18:24:41,680 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 87 selfloop transitions, 17 changer transitions 0/115 dead transitions. [2024-11-10 18:24:41,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 115 transitions, 786 flow [2024-11-10 18:24:41,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:41,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-11-10 18:24:41,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-11-10 18:24:41,682 INFO L175 Difference]: Start difference. First operand has 77 places, 72 transitions, 394 flow. Second operand 6 states and 219 transitions. [2024-11-10 18:24:41,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 115 transitions, 786 flow [2024-11-10 18:24:41,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 115 transitions, 742 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:24:41,694 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 456 flow [2024-11-10 18:24:41,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=456, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2024-11-10 18:24:41,695 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2024-11-10 18:24:41,695 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 456 flow [2024-11-10 18:24:41,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:41,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:41,696 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:41,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:41,899 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,SelfDestructingSolverStorable11 [2024-11-10 18:24:41,900 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:41,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1324918631, now seen corresponding path program 1 times [2024-11-10 18:24:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:41,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118618582] [2024-11-10 18:24:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:41,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:42,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:24:42,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:42,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118618582] [2024-11-10 18:24:42,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118618582] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334044327] [2024-11-10 18:24:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:42,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:42,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:42,119 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:42,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 18:24:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:42,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 18:24:42,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 18:24:42,316 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 18:24:42,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334044327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:42,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 18:24:42,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-10 18:24:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299257542] [2024-11-10 18:24:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:42,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:24:42,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:24:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-10 18:24:42,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-10 18:24:42,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 456 flow. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:42,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:42,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-10 18:24:42,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:42,792 INFO L124 PetriNetUnfolderBase]: 1123/1992 cut-off events. [2024-11-10 18:24:42,792 INFO L125 PetriNetUnfolderBase]: For 2695/2714 co-relation queries the response was YES. [2024-11-10 18:24:42,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6161 conditions, 1992 events. 1123/1992 cut-off events. For 2695/2714 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 12147 event pairs, 316 based on Foata normal form. 48/1926 useless extension candidates. Maximal degree in co-relation 5353. Up to 1030 conditions per place. [2024-11-10 18:24:42,811 INFO L140 encePairwiseOnDemand]: 47/64 looper letters, 42 selfloop transitions, 30 changer transitions 0/81 dead transitions. [2024-11-10 18:24:42,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 609 flow [2024-11-10 18:24:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:42,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-11-10 18:24:42,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.490625 [2024-11-10 18:24:42,814 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 456 flow. Second operand 5 states and 157 transitions. [2024-11-10 18:24:42,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 609 flow [2024-11-10 18:24:42,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 578 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:42,826 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 447 flow [2024-11-10 18:24:42,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=447, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-11-10 18:24:42,826 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2024-11-10 18:24:42,827 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 447 flow [2024-11-10 18:24:42,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:42,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:42,827 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:42,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:43,027 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,SelfDestructingSolverStorable12 [2024-11-10 18:24:43,028 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:43,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash 459737183, now seen corresponding path program 1 times [2024-11-10 18:24:43,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:43,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321904226] [2024-11-10 18:24:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:43,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:43,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:43,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321904226] [2024-11-10 18:24:43,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321904226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:43,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:43,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:24:43,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051050817] [2024-11-10 18:24:43,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:43,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:24:43,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:43,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:24:43,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:24:43,091 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 64 [2024-11-10 18:24:43,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 447 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:43,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:43,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 64 [2024-11-10 18:24:43,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:43,330 INFO L124 PetriNetUnfolderBase]: 1148/2055 cut-off events. [2024-11-10 18:24:43,330 INFO L125 PetriNetUnfolderBase]: For 3607/3626 co-relation queries the response was YES. [2024-11-10 18:24:43,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6460 conditions, 2055 events. 1148/2055 cut-off events. For 3607/3626 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12789 event pairs, 274 based on Foata normal form. 2/1960 useless extension candidates. Maximal degree in co-relation 5618. Up to 1473 conditions per place. [2024-11-10 18:24:43,347 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 72 selfloop transitions, 11 changer transitions 1/95 dead transitions. [2024-11-10 18:24:43,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 765 flow [2024-11-10 18:24:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:24:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:24:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-11-10 18:24:43,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.734375 [2024-11-10 18:24:43,348 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 447 flow. Second operand 3 states and 141 transitions. [2024-11-10 18:24:43,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 765 flow [2024-11-10 18:24:43,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 95 transitions, 685 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 18:24:43,361 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 521 flow [2024-11-10 18:24:43,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=521, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2024-11-10 18:24:43,362 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2024-11-10 18:24:43,362 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 521 flow [2024-11-10 18:24:43,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:43,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:43,362 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:43,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-10 18:24:43,362 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:43,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:43,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1325550219, now seen corresponding path program 1 times [2024-11-10 18:24:43,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:43,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230589487] [2024-11-10 18:24:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:43,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:43,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:43,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230589487] [2024-11-10 18:24:43,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230589487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:43,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:43,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:24:43,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198578298] [2024-11-10 18:24:43,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:43,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:43,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:43,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-11-10 18:24:43,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 521 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:43,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:43,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-11-10 18:24:43,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:44,022 INFO L124 PetriNetUnfolderBase]: 1743/2927 cut-off events. [2024-11-10 18:24:44,022 INFO L125 PetriNetUnfolderBase]: For 4091/4091 co-relation queries the response was YES. [2024-11-10 18:24:44,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8833 conditions, 2927 events. 1743/2927 cut-off events. For 4091/4091 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17211 event pairs, 568 based on Foata normal form. 10/2917 useless extension candidates. Maximal degree in co-relation 7889. Up to 1518 conditions per place. [2024-11-10 18:24:44,044 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 159 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2024-11-10 18:24:44,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 175 transitions, 1417 flow [2024-11-10 18:24:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:44,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:44,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2024-11-10 18:24:44,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-11-10 18:24:44,046 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 521 flow. Second operand 5 states and 218 transitions. [2024-11-10 18:24:44,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 175 transitions, 1417 flow [2024-11-10 18:24:44,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 175 transitions, 1388 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:44,063 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 579 flow [2024-11-10 18:24:44,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=579, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2024-11-10 18:24:44,064 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 20 predicate places. [2024-11-10 18:24:44,064 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 579 flow [2024-11-10 18:24:44,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:44,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:44,065 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:44,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 18:24:44,065 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:44,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:44,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1038415349, now seen corresponding path program 2 times [2024-11-10 18:24:44,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:44,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16316925] [2024-11-10 18:24:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:44,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:44,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:44,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:44,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16316925] [2024-11-10 18:24:44,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16316925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:44,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:44,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:24:44,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191905279] [2024-11-10 18:24:44,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:44,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:44,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:44,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:44,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:44,183 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 64 [2024-11-10 18:24:44,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 579 flow. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:44,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:44,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 64 [2024-11-10 18:24:44,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:44,425 INFO L124 PetriNetUnfolderBase]: 1251/2154 cut-off events. [2024-11-10 18:24:44,426 INFO L125 PetriNetUnfolderBase]: For 3537/3539 co-relation queries the response was YES. [2024-11-10 18:24:44,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6883 conditions, 2154 events. 1251/2154 cut-off events. For 3537/3539 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12357 event pairs, 510 based on Foata normal form. 64/2210 useless extension candidates. Maximal degree in co-relation 6077. Up to 1504 conditions per place. [2024-11-10 18:24:44,442 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 87 selfloop transitions, 17 changer transitions 0/112 dead transitions. [2024-11-10 18:24:44,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 112 transitions, 919 flow [2024-11-10 18:24:44,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-11-10 18:24:44,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603125 [2024-11-10 18:24:44,444 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 579 flow. Second operand 5 states and 193 transitions. [2024-11-10 18:24:44,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 112 transitions, 919 flow [2024-11-10 18:24:44,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 112 transitions, 883 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:44,457 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 566 flow [2024-11-10 18:24:44,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2024-11-10 18:24:44,458 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2024-11-10 18:24:44,458 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 566 flow [2024-11-10 18:24:44,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:44,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:44,459 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:44,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 18:24:44,459 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:44,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash -85729351, now seen corresponding path program 1 times [2024-11-10 18:24:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:44,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644609861] [2024-11-10 18:24:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:44,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:44,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644609861] [2024-11-10 18:24:44,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644609861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:44,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:44,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 18:24:44,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39805418] [2024-11-10 18:24:44,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:44,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:44,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:44,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:44,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:44,648 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-10 18:24:44,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 566 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) [2024-11-10 18:24:44,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:44,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-10 18:24:44,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:45,057 INFO L124 PetriNetUnfolderBase]: 1683/2891 cut-off events. [2024-11-10 18:24:45,058 INFO L125 PetriNetUnfolderBase]: For 6737/6737 co-relation queries the response was YES. [2024-11-10 18:24:45,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10134 conditions, 2891 events. 1683/2891 cut-off events. For 6737/6737 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16848 event pairs, 670 based on Foata normal form. 32/2919 useless extension candidates. Maximal degree in co-relation 9297. Up to 1318 conditions per place. [2024-11-10 18:24:45,078 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 138 selfloop transitions, 20 changer transitions 0/164 dead transitions. [2024-11-10 18:24:45,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 164 transitions, 1434 flow [2024-11-10 18:24:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2024-11-10 18:24:45,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6432291666666666 [2024-11-10 18:24:45,080 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 566 flow. Second operand 6 states and 247 transitions. [2024-11-10 18:24:45,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 164 transitions, 1434 flow [2024-11-10 18:24:45,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 164 transitions, 1412 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:45,108 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 778 flow [2024-11-10 18:24:45,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=778, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-10 18:24:45,109 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2024-11-10 18:24:45,109 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 778 flow [2024-11-10 18:24:45,109 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) [2024-11-10 18:24:45,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:45,109 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:45,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 18:24:45,110 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:45,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:45,110 INFO L85 PathProgramCache]: Analyzing trace with hash 943809577, now seen corresponding path program 2 times [2024-11-10 18:24:45,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:45,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750662332] [2024-11-10 18:24:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:45,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:45,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:45,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750662332] [2024-11-10 18:24:45,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750662332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:45,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:45,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:24:45,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517357644] [2024-11-10 18:24:45,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:45,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:45,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:45,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:45,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-10 18:24:45,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 778 flow. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:45,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:45,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-10 18:24:45,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:45,690 INFO L124 PetriNetUnfolderBase]: 1673/2894 cut-off events. [2024-11-10 18:24:45,690 INFO L125 PetriNetUnfolderBase]: For 9954/9954 co-relation queries the response was YES. [2024-11-10 18:24:45,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10760 conditions, 2894 events. 1673/2894 cut-off events. For 9954/9954 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17061 event pairs, 888 based on Foata normal form. 10/2900 useless extension candidates. Maximal degree in co-relation 9920. Up to 2208 conditions per place. [2024-11-10 18:24:45,716 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 92 selfloop transitions, 29 changer transitions 0/127 dead transitions. [2024-11-10 18:24:45,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 1325 flow [2024-11-10 18:24:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 192 transitions. [2024-11-10 18:24:45,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-10 18:24:45,719 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 778 flow. Second operand 5 states and 192 transitions. [2024-11-10 18:24:45,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 1325 flow [2024-11-10 18:24:45,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 127 transitions, 1291 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:45,755 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 1028 flow [2024-11-10 18:24:45,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1028, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2024-11-10 18:24:45,755 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 40 predicate places. [2024-11-10 18:24:45,756 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 1028 flow [2024-11-10 18:24:45,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:45,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:45,756 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:45,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-10 18:24:45,756 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:45,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:45,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2086005383, now seen corresponding path program 3 times [2024-11-10 18:24:45,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:45,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942601835] [2024-11-10 18:24:45,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:45,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:45,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:45,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942601835] [2024-11-10 18:24:45,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942601835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:45,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:45,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 18:24:45,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421930644] [2024-11-10 18:24:45,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:45,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:45,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:45,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:45,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:45,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-10 18:24:45,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 102 transitions, 1028 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) [2024-11-10 18:24:45,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:45,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-10 18:24:45,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:46,364 INFO L124 PetriNetUnfolderBase]: 2059/3552 cut-off events. [2024-11-10 18:24:46,364 INFO L125 PetriNetUnfolderBase]: For 13631/13631 co-relation queries the response was YES. [2024-11-10 18:24:46,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13555 conditions, 3552 events. 2059/3552 cut-off events. For 13631/13631 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21541 event pairs, 788 based on Foata normal form. 32/3572 useless extension candidates. Maximal degree in co-relation 12536. Up to 1808 conditions per place. [2024-11-10 18:24:46,393 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 131 selfloop transitions, 35 changer transitions 0/172 dead transitions. [2024-11-10 18:24:46,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 172 transitions, 1827 flow [2024-11-10 18:24:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:24:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:24:46,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2024-11-10 18:24:46,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5915178571428571 [2024-11-10 18:24:46,395 INFO L175 Difference]: Start difference. First operand has 99 places, 102 transitions, 1028 flow. Second operand 7 states and 265 transitions. [2024-11-10 18:24:46,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 172 transitions, 1827 flow [2024-11-10 18:24:46,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 172 transitions, 1776 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-10 18:24:46,440 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 1214 flow [2024-11-10 18:24:46,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1214, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2024-11-10 18:24:46,441 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 49 predicate places. [2024-11-10 18:24:46,441 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 1214 flow [2024-11-10 18:24:46,442 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) [2024-11-10 18:24:46,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:46,442 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:46,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-10 18:24:46,442 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:46,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1410904771, now seen corresponding path program 4 times [2024-11-10 18:24:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325654118] [2024-11-10 18:24:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:46,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:46,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325654118] [2024-11-10 18:24:46,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325654118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:46,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:46,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 18:24:46,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744915238] [2024-11-10 18:24:46,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:46,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:24:46,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:46,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:24:46,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:24:46,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-10 18:24:46,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 1214 flow. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:46,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:46,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-10 18:24:46,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:47,024 INFO L124 PetriNetUnfolderBase]: 1969/3397 cut-off events. [2024-11-10 18:24:47,024 INFO L125 PetriNetUnfolderBase]: For 16993/16993 co-relation queries the response was YES. [2024-11-10 18:24:47,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13461 conditions, 3397 events. 1969/3397 cut-off events. For 16993/16993 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 20555 event pairs, 703 based on Foata normal form. 10/3387 useless extension candidates. Maximal degree in co-relation 12433. Up to 1624 conditions per place. [2024-11-10 18:24:47,089 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 128 selfloop transitions, 31 changer transitions 0/165 dead transitions. [2024-11-10 18:24:47,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 165 transitions, 1857 flow [2024-11-10 18:24:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:24:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:24:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-11-10 18:24:47,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.646875 [2024-11-10 18:24:47,091 INFO L175 Difference]: Start difference. First operand has 108 places, 110 transitions, 1214 flow. Second operand 5 states and 207 transitions. [2024-11-10 18:24:47,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 165 transitions, 1857 flow [2024-11-10 18:24:47,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 165 transitions, 1799 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-10 18:24:47,131 INFO L231 Difference]: Finished difference. Result has 111 places, 113 transitions, 1306 flow [2024-11-10 18:24:47,131 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1306, PETRI_PLACES=111, PETRI_TRANSITIONS=113} [2024-11-10 18:24:47,132 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 52 predicate places. [2024-11-10 18:24:47,132 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 113 transitions, 1306 flow [2024-11-10 18:24:47,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:47,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:47,132 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:47,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-10 18:24:47,133 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:47,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:47,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2120074071, now seen corresponding path program 5 times [2024-11-10 18:24:47,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:47,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401964997] [2024-11-10 18:24:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:47,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:47,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401964997] [2024-11-10 18:24:47,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401964997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:47,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:47,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 18:24:47,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489477004] [2024-11-10 18:24:47,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:47,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:47,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:47,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:47,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:24:47,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-10 18:24:47,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 113 transitions, 1306 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) [2024-11-10 18:24:47,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:47,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-10 18:24:47,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:47,706 INFO L124 PetriNetUnfolderBase]: 1857/3176 cut-off events. [2024-11-10 18:24:47,706 INFO L125 PetriNetUnfolderBase]: For 17264/17272 co-relation queries the response was YES. [2024-11-10 18:24:47,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12959 conditions, 3176 events. 1857/3176 cut-off events. For 17264/17272 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18523 event pairs, 948 based on Foata normal form. 32/3204 useless extension candidates. Maximal degree in co-relation 11934. Up to 2438 conditions per place. [2024-11-10 18:24:47,729 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 109 selfloop transitions, 38 changer transitions 0/153 dead transitions. [2024-11-10 18:24:47,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 153 transitions, 1830 flow [2024-11-10 18:24:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 18:24:47,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 18:24:47,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2024-11-10 18:24:47,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-11-10 18:24:47,731 INFO L175 Difference]: Start difference. First operand has 111 places, 113 transitions, 1306 flow. Second operand 6 states and 228 transitions. [2024-11-10 18:24:47,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 153 transitions, 1830 flow [2024-11-10 18:24:47,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 153 transitions, 1766 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:47,770 INFO L231 Difference]: Finished difference. Result has 117 places, 116 transitions, 1398 flow [2024-11-10 18:24:47,770 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1398, PETRI_PLACES=117, PETRI_TRANSITIONS=116} [2024-11-10 18:24:47,771 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 58 predicate places. [2024-11-10 18:24:47,771 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 116 transitions, 1398 flow [2024-11-10 18:24:47,771 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) [2024-11-10 18:24:47,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:47,772 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, 1, 1] [2024-11-10 18:24:47,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-10 18:24:47,772 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:47,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:47,772 INFO L85 PathProgramCache]: Analyzing trace with hash 151357462, now seen corresponding path program 1 times [2024-11-10 18:24:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816247597] [2024-11-10 18:24:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:47,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:47,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:47,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816247597] [2024-11-10 18:24:47,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816247597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:47,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292266522] [2024-11-10 18:24:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:47,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:47,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:47,949 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:47,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 18:24:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:48,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 18:24:48,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:48,060 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 [2024-11-10 18:24:48,179 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 [2024-11-10 18:24:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:48,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:48,585 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 [2024-11-10 18:24:48,610 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 18:24:48,610 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 [2024-11-10 18:24:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:48,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292266522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:48,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:48,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 19 [2024-11-10 18:24:48,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056995814] [2024-11-10 18:24:48,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:48,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 18:24:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 18:24:48,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-10 18:24:49,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-10 18:24:49,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 116 transitions, 1398 flow. Second operand has 19 states, 19 states have (on average 29.736842105263158) internal successors, (565), 19 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:49,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:49,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-10 18:24:49,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:52,216 INFO L124 PetriNetUnfolderBase]: 3299/5804 cut-off events. [2024-11-10 18:24:52,216 INFO L125 PetriNetUnfolderBase]: For 23940/23940 co-relation queries the response was YES. [2024-11-10 18:24:52,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21115 conditions, 5804 events. 3299/5804 cut-off events. For 23940/23940 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 37407 event pairs, 336 based on Foata normal form. 61/5861 useless extension candidates. Maximal degree in co-relation 19852. Up to 946 conditions per place. [2024-11-10 18:24:52,254 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 256 selfloop transitions, 106 changer transitions 212/579 dead transitions. [2024-11-10 18:24:52,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 579 transitions, 5342 flow [2024-11-10 18:24:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-10 18:24:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-10 18:24:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1508 transitions. [2024-11-10 18:24:52,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-10 18:24:52,260 INFO L175 Difference]: Start difference. First operand has 117 places, 116 transitions, 1398 flow. Second operand 39 states and 1508 transitions. [2024-11-10 18:24:52,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 579 transitions, 5342 flow [2024-11-10 18:24:52,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 579 transitions, 5175 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:52,332 INFO L231 Difference]: Finished difference. Result has 179 places, 158 transitions, 1980 flow [2024-11-10 18:24:52,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1980, PETRI_PLACES=179, PETRI_TRANSITIONS=158} [2024-11-10 18:24:52,333 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 120 predicate places. [2024-11-10 18:24:52,333 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 158 transitions, 1980 flow [2024-11-10 18:24:52,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 29.736842105263158) internal successors, (565), 19 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:52,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:52,333 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, 1, 1] [2024-11-10 18:24:52,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-10 18:24:52,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-10 18:24:52,538 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:52,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash -2115105206, now seen corresponding path program 2 times [2024-11-10 18:24:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294435961] [2024-11-10 18:24:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:52,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:52,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:52,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294435961] [2024-11-10 18:24:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294435961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:24:52,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:24:52,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 18:24:52,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462250004] [2024-11-10 18:24:52,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:52,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 18:24:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:52,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 18:24:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-10 18:24:52,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-10 18:24:52,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 158 transitions, 1980 flow. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:52,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:52,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-10 18:24:52,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:53,663 INFO L124 PetriNetUnfolderBase]: 2306/4164 cut-off events. [2024-11-10 18:24:53,663 INFO L125 PetriNetUnfolderBase]: For 32757/32757 co-relation queries the response was YES. [2024-11-10 18:24:53,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19899 conditions, 4164 events. 2306/4164 cut-off events. For 32757/32757 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 25109 event pairs, 1119 based on Foata normal form. 44/4208 useless extension candidates. Maximal degree in co-relation 19830. Up to 2573 conditions per place. [2024-11-10 18:24:53,697 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 188 selfloop transitions, 45 changer transitions 9/248 dead transitions. [2024-11-10 18:24:53,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 248 transitions, 3215 flow [2024-11-10 18:24:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 18:24:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 18:24:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 306 transitions. [2024-11-10 18:24:53,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.59765625 [2024-11-10 18:24:53,699 INFO L175 Difference]: Start difference. First operand has 179 places, 158 transitions, 1980 flow. Second operand 8 states and 306 transitions. [2024-11-10 18:24:53,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 248 transitions, 3215 flow [2024-11-10 18:24:53,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 248 transitions, 2876 flow, removed 136 selfloop flow, removed 20 redundant places. [2024-11-10 18:24:53,799 INFO L231 Difference]: Finished difference. Result has 158 places, 169 transitions, 2010 flow [2024-11-10 18:24:53,800 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2010, PETRI_PLACES=158, PETRI_TRANSITIONS=169} [2024-11-10 18:24:53,800 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 99 predicate places. [2024-11-10 18:24:53,800 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 169 transitions, 2010 flow [2024-11-10 18:24:53,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:53,800 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:53,801 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, 1, 1] [2024-11-10 18:24:53,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-10 18:24:53,801 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:53,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash 152216218, now seen corresponding path program 3 times [2024-11-10 18:24:53,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:53,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31976714] [2024-11-10 18:24:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:53,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:24:54,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:54,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31976714] [2024-11-10 18:24:54,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31976714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815847769] [2024-11-10 18:24:54,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 18:24:54,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:54,012 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:54,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 18:24:54,092 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 18:24:54,092 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:54,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-10 18:24:54,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:54,136 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 [2024-11-10 18:24:54,281 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 [2024-11-10 18:24:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:54,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:54,624 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 [2024-11-10 18:24:54,635 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 18:24:54,636 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 [2024-11-10 18:24:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:54,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815847769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:24:54,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:24:54,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-10 18:24:54,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481026015] [2024-11-10 18:24:54,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:24:54,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-10 18:24:54,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:54,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-10 18:24:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-10 18:24:55,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-11-10 18:24:55,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 169 transitions, 2010 flow. Second operand has 21 states, 21 states have (on average 28.238095238095237) internal successors, (593), 21 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:55,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:55,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-11-10 18:24:55,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:57,252 INFO L124 PetriNetUnfolderBase]: 2912/5199 cut-off events. [2024-11-10 18:24:57,252 INFO L125 PetriNetUnfolderBase]: For 32037/32037 co-relation queries the response was YES. [2024-11-10 18:24:57,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22959 conditions, 5199 events. 2912/5199 cut-off events. For 32037/32037 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 32375 event pairs, 588 based on Foata normal form. 40/5237 useless extension candidates. Maximal degree in co-relation 22900. Up to 2764 conditions per place. [2024-11-10 18:24:57,380 INFO L140 encePairwiseOnDemand]: 44/64 looper letters, 181 selfloop transitions, 82 changer transitions 121/388 dead transitions. [2024-11-10 18:24:57,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 388 transitions, 4392 flow [2024-11-10 18:24:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-10 18:24:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-10 18:24:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1005 transitions. [2024-11-10 18:24:57,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-11-10 18:24:57,382 INFO L175 Difference]: Start difference. First operand has 158 places, 169 transitions, 2010 flow. Second operand 30 states and 1005 transitions. [2024-11-10 18:24:57,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 388 transitions, 4392 flow [2024-11-10 18:24:57,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 388 transitions, 4308 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-11-10 18:24:57,472 INFO L231 Difference]: Finished difference. Result has 193 places, 166 transitions, 2096 flow [2024-11-10 18:24:57,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2096, PETRI_PLACES=193, PETRI_TRANSITIONS=166} [2024-11-10 18:24:57,473 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 134 predicate places. [2024-11-10 18:24:57,473 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 166 transitions, 2096 flow [2024-11-10 18:24:57,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 28.238095238095237) internal successors, (593), 21 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:57,474 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:57,474 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:57,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 18:24:57,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-10 18:24:57,674 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:57,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:57,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1780003679, now seen corresponding path program 4 times [2024-11-10 18:24:57,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:57,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774784622] [2024-11-10 18:24:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:57,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:24:57,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774784622] [2024-11-10 18:24:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774784622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848673935] [2024-11-10 18:24:57,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 18:24:57,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:57,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:57,895 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:57,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 18:24:57,987 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 18:24:57,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:24:57,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-10 18:24:57,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:24:58,099 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:24:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:24:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848673935] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:58,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 18:24:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 17 [2024-11-10 18:24:58,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520872550] [2024-11-10 18:24:58,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:24:58,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:24:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:24:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:24:58,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-10 18:24:58,235 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-10 18:24:58,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 166 transitions, 2096 flow. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:58,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:24:58,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-10 18:24:58,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:24:58,800 INFO L124 PetriNetUnfolderBase]: 1969/3721 cut-off events. [2024-11-10 18:24:58,800 INFO L125 PetriNetUnfolderBase]: For 27820/27880 co-relation queries the response was YES. [2024-11-10 18:24:58,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17661 conditions, 3721 events. 1969/3721 cut-off events. For 27820/27880 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 23725 event pairs, 739 based on Foata normal form. 70/3747 useless extension candidates. Maximal degree in co-relation 17594. Up to 1969 conditions per place. [2024-11-10 18:24:58,836 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 167 selfloop transitions, 61 changer transitions 0/242 dead transitions. [2024-11-10 18:24:58,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 242 transitions, 3255 flow [2024-11-10 18:24:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 18:24:58,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 18:24:58,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 271 transitions. [2024-11-10 18:24:58,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6049107142857143 [2024-11-10 18:24:58,838 INFO L175 Difference]: Start difference. First operand has 193 places, 166 transitions, 2096 flow. Second operand 7 states and 271 transitions. [2024-11-10 18:24:58,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 242 transitions, 3255 flow [2024-11-10 18:24:58,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 242 transitions, 2988 flow, removed 84 selfloop flow, removed 17 redundant places. [2024-11-10 18:24:58,906 INFO L231 Difference]: Finished difference. Result has 159 places, 173 transitions, 2162 flow [2024-11-10 18:24:58,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2162, PETRI_PLACES=159, PETRI_TRANSITIONS=173} [2024-11-10 18:24:58,907 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 100 predicate places. [2024-11-10 18:24:58,907 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 173 transitions, 2162 flow [2024-11-10 18:24:58,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:24:58,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:24:58,907 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:24:58,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-10 18:24:59,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-10 18:24:59,108 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-10 18:24:59,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:24:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1955246108, now seen corresponding path program 1 times [2024-11-10 18:24:59,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:24:59,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976338641] [2024-11-10 18:24:59,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:59,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:24:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-10 18:24:59,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:24:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976338641] [2024-11-10 18:24:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976338641] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:24:59,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083260438] [2024-11-10 18:24:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:24:59,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:24:59,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:24:59,321 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:24:59,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 18:24:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:24:59,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-10 18:24:59,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:24:59,452 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 [2024-11-10 18:24:59,497 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 [2024-11-10 18:24:59,813 INFO L349 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2024-11-10 18:24:59,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 40 [2024-11-10 18:24:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:24:59,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:25:00,475 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 250 treesize of output 230 [2024-11-10 18:25:00,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 18:25:00,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 28 case distinctions, treesize of input 6374 treesize of output 4138