./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:38:45,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:38:45,898 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:38:45,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:38:45,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:38:45,942 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:38:45,942 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:38:45,943 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:38:45,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:38:45,945 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:38:45,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:38:45,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:38:45,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:38:45,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:38:45,947 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:38:45,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:38:45,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:38:45,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:38:45,950 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:38:45,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:38:45,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:38:45,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:38:45,955 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:38:45,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:38:45,965 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:38:45,965 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:38:45,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:38:45,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:38:45,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:38:45,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:38:45,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:38:45,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:38:45,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:38:45,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:38:45,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:38:45,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:38:45,968 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:38:45,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:38:45,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:38:45,970 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:38:45,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:38:45,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:38:45,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2024-11-20 09:38:46,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:38:46,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:38:46,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:38:46,286 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:38:46,286 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:38:46,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-20 09:38:47,793 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:38:47,971 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:38:47,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2024-11-20 09:38:47,979 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e351379/6f1843d5c9134cabbd0959712e639d5f/FLAG46e4cec59 [2024-11-20 09:38:48,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2e351379/6f1843d5c9134cabbd0959712e639d5f [2024-11-20 09:38:48,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:38:48,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:38:48,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:38:48,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:38:48,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:38:48,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f26427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48, skipping insertion in model container [2024-11-20 09:38:48,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,402 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:38:48,648 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3066,3079] [2024-11-20 09:38:48,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:38:48,665 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:38:48,694 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3066,3079] [2024-11-20 09:38:48,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:38:48,721 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:38:48,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48 WrapperNode [2024-11-20 09:38:48,722 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:38:48,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:38:48,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:38:48,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:38:48,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,783 INFO L138 Inliner]: procedures = 21, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-11-20 09:38:48,784 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:38:48,785 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:38:48,785 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:38:48,785 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:38:48,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,799 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,813 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 09:38:48,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:38:48,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:38:48,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:38:48,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:38:48,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (1/1) ... [2024-11-20 09:38:48,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:38:48,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:48,873 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) [2024-11-20 09:38:48,880 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 [2024-11-20 09:38:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:38:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 09:38:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 09:38:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 09:38:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 09:38:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 09:38:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 09:38:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:38:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:38:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:38:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:38:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:38:48,936 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:38:49,052 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:38:49,055 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:38:49,316 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:38:49,316 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:38:49,487 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:38:49,487 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 09:38:49,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:38:49 BoogieIcfgContainer [2024-11-20 09:38:49,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:38:49,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:38:49,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:38:49,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:38:49,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:38:48" (1/3) ... [2024-11-20 09:38:49,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c00e0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:38:49, skipping insertion in model container [2024-11-20 09:38:49,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:38:48" (2/3) ... [2024-11-20 09:38:49,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c00e0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:38:49, skipping insertion in model container [2024-11-20 09:38:49,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:38:49" (3/3) ... [2024-11-20 09:38:49,498 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2024-11-20 09:38:49,515 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:38:49,516 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:38:49,516 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:38:49,579 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 09:38:49,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 93 flow [2024-11-20 09:38:49,677 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-20 09:38:49,678 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:38:49,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 4/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 70 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-20 09:38:49,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 93 flow [2024-11-20 09:38:49,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 82 flow [2024-11-20 09:38:49,704 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:38:49,713 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=LoopHeads, 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;@164b93a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:38:49,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:38:49,726 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:38:49,726 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-11-20 09:38:49,726 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 09:38:49,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:49,728 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:49,728 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:49,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1869697828, now seen corresponding path program 1 times [2024-11-20 09:38:49,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:49,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464956304] [2024-11-20 09:38:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:49,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464956304] [2024-11-20 09:38:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464956304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:50,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:38:50,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115149133] [2024-11-20 09:38:50,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:50,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:38:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:50,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:38:50,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:38:50,631 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-20 09:38:50,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:50,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:50,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-20 09:38:50,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:51,172 INFO L124 PetriNetUnfolderBase]: 1930/2760 cut-off events. [2024-11-20 09:38:51,173 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-20 09:38:51,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 2760 events. 1930/2760 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13547 event pairs, 66 based on Foata normal form. 0/2246 useless extension candidates. Maximal degree in co-relation 5542. Up to 970 conditions per place. [2024-11-20 09:38:51,201 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 71 selfloop transitions, 8 changer transitions 6/91 dead transitions. [2024-11-20 09:38:51,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 91 transitions, 385 flow [2024-11-20 09:38:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:38:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:38:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-11-20 09:38:51,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-20 09:38:51,218 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 6 states and 141 transitions. [2024-11-20 09:38:51,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 91 transitions, 385 flow [2024-11-20 09:38:51,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 91 transitions, 363 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 09:38:51,230 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 120 flow [2024-11-20 09:38:51,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-20 09:38:51,239 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2024-11-20 09:38:51,240 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 120 flow [2024-11-20 09:38:51,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:51,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:51,240 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:51,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:38:51,241 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:51,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:51,242 INFO L85 PathProgramCache]: Analyzing trace with hash 973632830, now seen corresponding path program 1 times [2024-11-20 09:38:51,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:51,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955849279] [2024-11-20 09:38:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:51,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:51,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:51,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955849279] [2024-11-20 09:38:51,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955849279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:51,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:51,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:38:51,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013559134] [2024-11-20 09:38:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:51,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:51,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:51,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:51,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:51,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-20 09:38:51,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:51,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:51,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-20 09:38:51,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:51,646 INFO L124 PetriNetUnfolderBase]: 1274/1985 cut-off events. [2024-11-20 09:38:51,646 INFO L125 PetriNetUnfolderBase]: For 484/518 co-relation queries the response was YES. [2024-11-20 09:38:51,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4363 conditions, 1985 events. 1274/1985 cut-off events. For 484/518 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9821 event pairs, 424 based on Foata normal form. 86/1666 useless extension candidates. Maximal degree in co-relation 3922. Up to 1047 conditions per place. [2024-11-20 09:38:51,662 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 45 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-20 09:38:51,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 273 flow [2024-11-20 09:38:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-20 09:38:51,664 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-11-20 09:38:51,664 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 120 flow. Second operand 3 states and 80 transitions. [2024-11-20 09:38:51,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 273 flow [2024-11-20 09:38:51,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 273 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 09:38:51,667 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 134 flow [2024-11-20 09:38:51,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-11-20 09:38:51,668 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2024-11-20 09:38:51,668 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 134 flow [2024-11-20 09:38:51,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:51,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:51,669 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:51,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:38:51,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:51,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:51,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1520712930, now seen corresponding path program 1 times [2024-11-20 09:38:51,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52151953] [2024-11-20 09:38:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:51,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:51,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52151953] [2024-11-20 09:38:51,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52151953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:51,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:51,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 09:38:51,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959027737] [2024-11-20 09:38:51,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:51,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 09:38:51,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:51,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 09:38:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 09:38:51,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-20 09:38:51,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:51,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:51,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-20 09:38:51,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:52,002 INFO L124 PetriNetUnfolderBase]: 1715/2705 cut-off events. [2024-11-20 09:38:52,002 INFO L125 PetriNetUnfolderBase]: For 968/1026 co-relation queries the response was YES. [2024-11-20 09:38:52,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6284 conditions, 2705 events. 1715/2705 cut-off events. For 968/1026 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14216 event pairs, 587 based on Foata normal form. 114/2305 useless extension candidates. Maximal degree in co-relation 5840. Up to 1613 conditions per place. [2024-11-20 09:38:52,018 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 44 selfloop transitions, 2 changer transitions 1/59 dead transitions. [2024-11-20 09:38:52,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 291 flow [2024-11-20 09:38:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 09:38:52,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 09:38:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-11-20 09:38:52,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-11-20 09:38:52,022 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 134 flow. Second operand 3 states and 78 transitions. [2024-11-20 09:38:52,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 291 flow [2024-11-20 09:38:52,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:52,026 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 148 flow [2024-11-20 09:38:52,026 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-20 09:38:52,027 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-11-20 09:38:52,028 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 148 flow [2024-11-20 09:38:52,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:52,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:52,029 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:52,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:38:52,030 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:52,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:52,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1930732514, now seen corresponding path program 1 times [2024-11-20 09:38:52,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057844053] [2024-11-20 09:38:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:52,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:52,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:52,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:52,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057844053] [2024-11-20 09:38:52,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057844053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:52,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:52,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:38:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420681909] [2024-11-20 09:38:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:52,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:38:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:38:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:38:52,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-20 09:38:52,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:52,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:52,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-20 09:38:52,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:52,484 INFO L124 PetriNetUnfolderBase]: 2217/3273 cut-off events. [2024-11-20 09:38:52,485 INFO L125 PetriNetUnfolderBase]: For 1592/1636 co-relation queries the response was YES. [2024-11-20 09:38:52,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8230 conditions, 3273 events. 2217/3273 cut-off events. For 1592/1636 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14718 event pairs, 156 based on Foata normal form. 44/2841 useless extension candidates. Maximal degree in co-relation 7532. Up to 1635 conditions per place. [2024-11-20 09:38:52,503 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 53 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-11-20 09:38:52,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 66 transitions, 353 flow [2024-11-20 09:38:52,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:38:52,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:38:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-20 09:38:52,506 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-11-20 09:38:52,507 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 148 flow. Second operand 4 states and 85 transitions. [2024-11-20 09:38:52,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 66 transitions, 353 flow [2024-11-20 09:38:52,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:52,514 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 173 flow [2024-11-20 09:38:52,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-11-20 09:38:52,514 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2024-11-20 09:38:52,515 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 173 flow [2024-11-20 09:38:52,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:52,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:52,515 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:52,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:38:52,516 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:52,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1261304906, now seen corresponding path program 2 times [2024-11-20 09:38:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:52,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937414362] [2024-11-20 09:38:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:38:52,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937414362] [2024-11-20 09:38:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937414362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:52,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583525113] [2024-11-20 09:38:52,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:38:52,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:52,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:52,708 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) [2024-11-20 09:38:52,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:38:52,787 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:38:52,788 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:52,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:38:52,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:52,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:53,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583525113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:53,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:53,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2024-11-20 09:38:53,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197946345] [2024-11-20 09:38:53,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:53,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 09:38:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 09:38:53,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 09:38:53,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-20 09:38:53,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 173 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:53,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:53,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-20 09:38:53,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:53,576 INFO L124 PetriNetUnfolderBase]: 2936/4328 cut-off events. [2024-11-20 09:38:53,577 INFO L125 PetriNetUnfolderBase]: For 2399/2456 co-relation queries the response was YES. [2024-11-20 09:38:53,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11073 conditions, 4328 events. 2936/4328 cut-off events. For 2399/2456 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21948 event pairs, 111 based on Foata normal form. 165/3964 useless extension candidates. Maximal degree in co-relation 10560. Up to 2614 conditions per place. [2024-11-20 09:38:53,606 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 70 selfloop transitions, 9 changer transitions 1/87 dead transitions. [2024-11-20 09:38:53,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 477 flow [2024-11-20 09:38:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:38:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:38:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-20 09:38:53,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-11-20 09:38:53,611 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 173 flow. Second operand 6 states and 125 transitions. [2024-11-20 09:38:53,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 477 flow [2024-11-20 09:38:53,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 09:38:53,619 INFO L231 Difference]: Finished difference. Result has 56 places, 44 transitions, 210 flow [2024-11-20 09:38:53,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=56, PETRI_TRANSITIONS=44} [2024-11-20 09:38:53,621 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-11-20 09:38:53,622 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 44 transitions, 210 flow [2024-11-20 09:38:53,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:53,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:53,623 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:53,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 09:38:53,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:53,824 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:53,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1094006826, now seen corresponding path program 3 times [2024-11-20 09:38:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:53,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951041726] [2024-11-20 09:38:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:53,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:53,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951041726] [2024-11-20 09:38:53,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951041726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:38:53,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:38:53,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:38:53,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104055854] [2024-11-20 09:38:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:38:53,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:38:53,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:38:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:38:53,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-20 09:38:53,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:53,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:53,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-20 09:38:53,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:54,492 INFO L124 PetriNetUnfolderBase]: 4229/6275 cut-off events. [2024-11-20 09:38:54,493 INFO L125 PetriNetUnfolderBase]: For 5699/5827 co-relation queries the response was YES. [2024-11-20 09:38:54,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 6275 events. 4229/6275 cut-off events. For 5699/5827 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 32919 event pairs, 848 based on Foata normal form. 250/5719 useless extension candidates. Maximal degree in co-relation 13488. Up to 2457 conditions per place. [2024-11-20 09:38:54,542 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 69 selfloop transitions, 6 changer transitions 2/86 dead transitions. [2024-11-20 09:38:54,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 86 transitions, 518 flow [2024-11-20 09:38:54,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:38:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:38:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-20 09:38:54,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-11-20 09:38:54,544 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 210 flow. Second operand 5 states and 109 transitions. [2024-11-20 09:38:54,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 86 transitions, 518 flow [2024-11-20 09:38:54,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 492 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-20 09:38:54,557 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 204 flow [2024-11-20 09:38:54,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-11-20 09:38:54,559 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-11-20 09:38:54,560 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 204 flow [2024-11-20 09:38:54,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:54,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:54,561 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:54,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:38:54,562 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:54,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:54,564 INFO L85 PathProgramCache]: Analyzing trace with hash -287348584, now seen corresponding path program 4 times [2024-11-20 09:38:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854582955] [2024-11-20 09:38:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:54,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:54,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:54,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854582955] [2024-11-20 09:38:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854582955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:54,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126685372] [2024-11-20 09:38:54,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 09:38:54,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:54,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:54,843 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) [2024-11-20 09:38:54,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 09:38:54,906 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 09:38:54,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:54,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 09:38:54,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:55,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:55,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:55,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126685372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:55,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:55,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 14 [2024-11-20 09:38:55,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729948711] [2024-11-20 09:38:55,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:55,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 09:38:55,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:55,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 09:38:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-20 09:38:55,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-20 09:38:55,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 204 flow. Second operand has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 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) [2024-11-20 09:38:55,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:55,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-20 09:38:55,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:56,621 INFO L124 PetriNetUnfolderBase]: 9235/14017 cut-off events. [2024-11-20 09:38:56,622 INFO L125 PetriNetUnfolderBase]: For 15229/15344 co-relation queries the response was YES. [2024-11-20 09:38:56,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37905 conditions, 14017 events. 9235/14017 cut-off events. For 15229/15344 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 85273 event pairs, 1191 based on Foata normal form. 429/12749 useless extension candidates. Maximal degree in co-relation 33095. Up to 3700 conditions per place. [2024-11-20 09:38:56,797 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 155 selfloop transitions, 35 changer transitions 27/225 dead transitions. [2024-11-20 09:38:56,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 225 transitions, 1308 flow [2024-11-20 09:38:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 09:38:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 09:38:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 329 transitions. [2024-11-20 09:38:56,799 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6092592592592593 [2024-11-20 09:38:56,799 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 204 flow. Second operand 15 states and 329 transitions. [2024-11-20 09:38:56,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 225 transitions, 1308 flow [2024-11-20 09:38:56,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 225 transitions, 1291 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 09:38:56,817 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 546 flow [2024-11-20 09:38:56,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=546, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-11-20 09:38:56,818 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2024-11-20 09:38:56,819 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 546 flow [2024-11-20 09:38:56,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.866666666666667) internal successors, (178), 15 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) [2024-11-20 09:38:56,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:56,819 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:56,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 09:38:57,023 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,SelfDestructingSolverStorable6 [2024-11-20 09:38:57,024 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:57,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash 900343102, now seen corresponding path program 5 times [2024-11-20 09:38:57,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:57,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294924820] [2024-11-20 09:38:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:57,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:57,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:57,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294924820] [2024-11-20 09:38:57,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294924820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:57,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440037231] [2024-11-20 09:38:57,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 09:38:57,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:57,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:57,140 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) [2024-11-20 09:38:57,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 09:38:57,211 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-20 09:38:57,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:38:57,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 09:38:57,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:57,262 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440037231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:57,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:57,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-11-20 09:38:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019300547] [2024-11-20 09:38:57,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:57,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:38:57,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:57,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:38:57,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:38:57,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-20 09:38:57,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 546 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:57,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:57,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-20 09:38:57,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:38:58,401 INFO L124 PetriNetUnfolderBase]: 7392/11805 cut-off events. [2024-11-20 09:38:58,402 INFO L125 PetriNetUnfolderBase]: For 23853/24311 co-relation queries the response was YES. [2024-11-20 09:38:58,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36540 conditions, 11805 events. 7392/11805 cut-off events. For 23853/24311 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 74484 event pairs, 3683 based on Foata normal form. 466/10684 useless extension candidates. Maximal degree in co-relation 34510. Up to 4310 conditions per place. [2024-11-20 09:38:58,485 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 108 selfloop transitions, 14 changer transitions 0/143 dead transitions. [2024-11-20 09:38:58,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 143 transitions, 1257 flow [2024-11-20 09:38:58,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:38:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:38:58,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-20 09:38:58,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-11-20 09:38:58,487 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 546 flow. Second operand 4 states and 113 transitions. [2024-11-20 09:38:58,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 143 transitions, 1257 flow [2024-11-20 09:38:58,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 143 transitions, 1051 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-11-20 09:38:58,689 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 589 flow [2024-11-20 09:38:58,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=589, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-11-20 09:38:58,692 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2024-11-20 09:38:58,693 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 589 flow [2024-11-20 09:38:58,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:58,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:38:58,693 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:38:58,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 09:38:58,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:58,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:38:58,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:38:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1081977900, now seen corresponding path program 1 times [2024-11-20 09:38:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:38:58,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603913909] [2024-11-20 09:38:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:38:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:58,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:38:58,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603913909] [2024-11-20 09:38:58,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603913909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:38:58,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360746288] [2024-11-20 09:38:58,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:38:58,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:38:58,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:38:58,988 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) [2024-11-20 09:38:58,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 09:38:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:38:59,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 09:38:59,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:38:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:38:59,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:38:59,136 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:38:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360746288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:38:59,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:38:59,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2024-11-20 09:38:59,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804203355] [2024-11-20 09:38:59,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:38:59,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:38:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:38:59,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:38:59,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:38:59,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-20 09:38:59,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 589 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:38:59,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:38:59,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-20 09:38:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:01,219 INFO L124 PetriNetUnfolderBase]: 15353/24646 cut-off events. [2024-11-20 09:39:01,220 INFO L125 PetriNetUnfolderBase]: For 39989/40815 co-relation queries the response was YES. [2024-11-20 09:39:01,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73414 conditions, 24646 events. 15353/24646 cut-off events. For 39989/40815 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 174313 event pairs, 6194 based on Foata normal form. 1024/22327 useless extension candidates. Maximal degree in co-relation 71633. Up to 8983 conditions per place. [2024-11-20 09:39:01,426 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 125 selfloop transitions, 21 changer transitions 0/167 dead transitions. [2024-11-20 09:39:01,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1490 flow [2024-11-20 09:39:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:39:01,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:39:01,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-11-20 09:39:01,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-11-20 09:39:01,428 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 589 flow. Second operand 4 states and 109 transitions. [2024-11-20 09:39:01,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1490 flow [2024-11-20 09:39:01,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 167 transitions, 1446 flow, removed 22 selfloop flow, removed 0 redundant places. [2024-11-20 09:39:01,550 INFO L231 Difference]: Finished difference. Result has 82 places, 99 transitions, 819 flow [2024-11-20 09:39:01,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=819, PETRI_PLACES=82, PETRI_TRANSITIONS=99} [2024-11-20 09:39:01,555 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2024-11-20 09:39:01,555 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 99 transitions, 819 flow [2024-11-20 09:39:01,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:39:01,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:01,556 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:01,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 09:39:01,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:01,757 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:01,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1913882398, now seen corresponding path program 6 times [2024-11-20 09:39:01,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:01,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633127415] [2024-11-20 09:39:01,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:01,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:39:02,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:02,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633127415] [2024-11-20 09:39:02,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633127415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:02,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001340583] [2024-11-20 09:39:02,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-20 09:39:02,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:02,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:02,115 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) [2024-11-20 09:39:02,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 09:39:02,178 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-20 09:39:02,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:39:02,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 09:39:02,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:39:02,319 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:39:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 09:39:02,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001340583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:39:02,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:39:02,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 15 [2024-11-20 09:39:02,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840473978] [2024-11-20 09:39:02,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:39:02,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 09:39:02,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:02,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 09:39:02,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2024-11-20 09:39:02,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-20 09:39:02,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 819 flow. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 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) [2024-11-20 09:39:02,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:02,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-20 09:39:02,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:08,731 INFO L124 PetriNetUnfolderBase]: 43127/65083 cut-off events. [2024-11-20 09:39:08,731 INFO L125 PetriNetUnfolderBase]: For 147443/147822 co-relation queries the response was YES. [2024-11-20 09:39:08,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205838 conditions, 65083 events. 43127/65083 cut-off events. For 147443/147822 co-relation queries the response was YES. Maximal size of possible extension queue 2099. Compared 471247 event pairs, 6714 based on Foata normal form. 2161/58739 useless extension candidates. Maximal degree in co-relation 199418. Up to 15250 conditions per place. [2024-11-20 09:39:09,158 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 179 selfloop transitions, 115 changer transitions 107/409 dead transitions. [2024-11-20 09:39:09,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 409 transitions, 3739 flow [2024-11-20 09:39:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 09:39:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 09:39:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 345 transitions. [2024-11-20 09:39:09,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-11-20 09:39:09,160 INFO L175 Difference]: Start difference. First operand has 82 places, 99 transitions, 819 flow. Second operand 15 states and 345 transitions. [2024-11-20 09:39:09,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 409 transitions, 3739 flow [2024-11-20 09:39:09,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 409 transitions, 3617 flow, removed 61 selfloop flow, removed 0 redundant places. [2024-11-20 09:39:09,643 INFO L231 Difference]: Finished difference. Result has 106 places, 173 transitions, 2097 flow [2024-11-20 09:39:09,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2097, PETRI_PLACES=106, PETRI_TRANSITIONS=173} [2024-11-20 09:39:09,644 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2024-11-20 09:39:09,644 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 173 transitions, 2097 flow [2024-11-20 09:39:09,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 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) [2024-11-20 09:39:09,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:09,644 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:09,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 09:39:09,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 09:39:09,846 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:09,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:09,846 INFO L85 PathProgramCache]: Analyzing trace with hash 129412852, now seen corresponding path program 7 times [2024-11-20 09:39:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976893633] [2024-11-20 09:39:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:09,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 09:39:10,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:10,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976893633] [2024-11-20 09:39:10,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976893633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:10,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968289568] [2024-11-20 09:39:10,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-20 09:39:10,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:10,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:10,151 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) [2024-11-20 09:39:10,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 09:39:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:10,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:39:10,224 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:39:10,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:39:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 09:39:10,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968289568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:39:10,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:39:10,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-11-20 09:39:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636544404] [2024-11-20 09:39:10,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:39:10,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:39:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:39:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:39:10,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-20 09:39:10,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 173 transitions, 2097 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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) [2024-11-20 09:39:10,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:10,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-20 09:39:10,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:15,700 INFO L124 PetriNetUnfolderBase]: 30678/48741 cut-off events. [2024-11-20 09:39:15,701 INFO L125 PetriNetUnfolderBase]: For 270118/271658 co-relation queries the response was YES. [2024-11-20 09:39:15,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202196 conditions, 48741 events. 30678/48741 cut-off events. For 270118/271658 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 358692 event pairs, 11293 based on Foata normal form. 1216/42964 useless extension candidates. Maximal degree in co-relation 199353. Up to 14568 conditions per place. [2024-11-20 09:39:16,165 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 328 selfloop transitions, 56 changer transitions 2/413 dead transitions. [2024-11-20 09:39:16,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 413 transitions, 5713 flow [2024-11-20 09:39:16,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:39:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:39:16,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-20 09:39:16,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2024-11-20 09:39:16,168 INFO L175 Difference]: Start difference. First operand has 106 places, 173 transitions, 2097 flow. Second operand 5 states and 146 transitions. [2024-11-20 09:39:16,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 413 transitions, 5713 flow [2024-11-20 09:39:17,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 413 transitions, 5511 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-11-20 09:39:17,584 INFO L231 Difference]: Finished difference. Result has 105 places, 202 transitions, 2546 flow [2024-11-20 09:39:17,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2546, PETRI_PLACES=105, PETRI_TRANSITIONS=202} [2024-11-20 09:39:17,585 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places. [2024-11-20 09:39:17,585 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 202 transitions, 2546 flow [2024-11-20 09:39:17,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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) [2024-11-20 09:39:17,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:17,588 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:17,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 09:39:17,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:17,789 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:17,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash -398154300, now seen corresponding path program 2 times [2024-11-20 09:39:17,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:17,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531530093] [2024-11-20 09:39:17,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:17,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 09:39:17,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:17,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531530093] [2024-11-20 09:39:17,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531530093] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:17,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378828420] [2024-11-20 09:39:17,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 09:39:17,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:17,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:17,885 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) [2024-11-20 09:39:17,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 09:39:17,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 09:39:17,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 09:39:17,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 09:39:17,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:39:18,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:39:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 09:39:18,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378828420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:39:18,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:39:18,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2024-11-20 09:39:18,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640769613] [2024-11-20 09:39:18,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:39:18,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:39:18,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:18,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:39:18,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:39:18,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-20 09:39:18,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 202 transitions, 2546 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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) [2024-11-20 09:39:18,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:18,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-20 09:39:18,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:39:29,341 INFO L124 PetriNetUnfolderBase]: 60101/95442 cut-off events. [2024-11-20 09:39:29,341 INFO L125 PetriNetUnfolderBase]: For 596984/600881 co-relation queries the response was YES. [2024-11-20 09:39:29,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398664 conditions, 95442 events. 60101/95442 cut-off events. For 596984/600881 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 773987 event pairs, 21018 based on Foata normal form. 2706/84685 useless extension candidates. Maximal degree in co-relation 395914. Up to 26023 conditions per place. [2024-11-20 09:39:30,218 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 346 selfloop transitions, 106 changer transitions 0/479 dead transitions. [2024-11-20 09:39:30,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 479 transitions, 7028 flow [2024-11-20 09:39:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:39:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:39:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-20 09:39:30,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-11-20 09:39:30,219 INFO L175 Difference]: Start difference. First operand has 105 places, 202 transitions, 2546 flow. Second operand 5 states and 140 transitions. [2024-11-20 09:39:30,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 479 transitions, 7028 flow [2024-11-20 09:39:32,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 479 transitions, 6498 flow, removed 237 selfloop flow, removed 1 redundant places. [2024-11-20 09:39:32,172 INFO L231 Difference]: Finished difference. Result has 111 places, 260 transitions, 3697 flow [2024-11-20 09:39:32,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3697, PETRI_PLACES=111, PETRI_TRANSITIONS=260} [2024-11-20 09:39:32,173 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 73 predicate places. [2024-11-20 09:39:32,173 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 260 transitions, 3697 flow [2024-11-20 09:39:32,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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) [2024-11-20 09:39:32,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:39:32,173 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:39:32,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 09:39:32,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:32,374 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:39:32,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:39:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash 365706584, now seen corresponding path program 1 times [2024-11-20 09:39:32,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:39:32,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915741707] [2024-11-20 09:39:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:32,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:39:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:39:32,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:39:32,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915741707] [2024-11-20 09:39:32,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915741707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:39:32,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757388141] [2024-11-20 09:39:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:39:32,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:39:32,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:39:32,665 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) [2024-11-20 09:39:32,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 09:39:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:39:32,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 09:39:32,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:39:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:39:32,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 09:39:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 09:39:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757388141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 09:39:33,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 09:39:33,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 16 [2024-11-20 09:39:33,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651501931] [2024-11-20 09:39:33,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 09:39:33,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 09:39:33,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:39:33,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 09:39:33,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-20 09:39:33,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-20 09:39:33,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 260 transitions, 3697 flow. Second operand has 17 states, 17 states have (on average 12.294117647058824) internal successors, (209), 17 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 09:39:33,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:39:33,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-20 09:39:33,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand