./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-dec-subseq.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 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:30:52,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:30:52,308 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:30:52,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:30:52,316 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:30:52,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:30:52,350 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:30:52,350 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:30:52,351 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:30:52,351 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:30:52,351 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:30:52,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:30:52,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:30:52,355 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:30:52,355 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:30:52,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:30:52,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:30:52,356 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:30:52,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:30:52,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:30:52,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:30:52,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:30:52,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:30:52,358 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:30:52,358 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:30:52,358 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:30:52,358 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:30:52,358 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:30:52,359 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:30:52,359 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:30:52,359 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:30:52,359 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:30:52,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:30:52,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:30:52,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:30:52,360 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:30:52,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:30:52,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:30:52,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:30:52,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:30:52,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:30:52,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:30:52,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f0e249de6560bdff430500b6d1ad159bf4a19253ccf183d061fafc41fe4114b [2024-11-16 19:30:52,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:30:52,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:30:52,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:30:52,597 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:30:52,598 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:30:52,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2024-11-16 19:30:53,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:30:54,055 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:30:54,055 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2024-11-16 19:30:54,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f368a5c58/f6fcf6559665411488fac407ce594c81/FLAGf6ba45ca3 [2024-11-16 19:30:54,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f368a5c58/f6fcf6559665411488fac407ce594c81 [2024-11-16 19:30:54,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:30:54,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:30:54,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:30:54,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:30:54,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:30:54,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f880940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54, skipping insertion in model container [2024-11-16 19:30:54,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,492 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:30:54,666 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/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-11-16 19:30:54,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:30:54,685 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:30:54,701 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/popl20-more-dec-subseq.wvr.c[2950,2963] [2024-11-16 19:30:54,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:30:54,719 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:30:54,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54 WrapperNode [2024-11-16 19:30:54,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:30:54,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:30:54,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:30:54,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:30:54,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,758 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 183 [2024-11-16 19:30:54,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:30:54,760 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:30:54,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:30:54,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:30:54,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,773 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,788 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-16 19:30:54,788 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,793 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:30:54,805 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:30:54,805 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:30:54,805 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:30:54,806 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (1/1) ... [2024-11-16 19:30:54,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:30:54,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:54,854 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) [2024-11-16 19:30:54,859 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 [2024-11-16 19:30:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:30:54,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:30:54,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:30:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:30:54,901 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:30:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:30:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:30:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:30:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:30:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:30:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:30:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:30:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:30:54,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:30:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:30:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:30:54,904 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:30:54,996 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:30:54,997 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:30:55,216 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:30:55,216 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:30:55,395 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:30:55,395 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:30:55,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:30:55 BoogieIcfgContainer [2024-11-16 19:30:55,396 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:30:55,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:30:55,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:30:55,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:30:55,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:30:54" (1/3) ... [2024-11-16 19:30:55,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1532eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:30:55, skipping insertion in model container [2024-11-16 19:30:55,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:30:54" (2/3) ... [2024-11-16 19:30:55,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e1532eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:30:55, skipping insertion in model container [2024-11-16 19:30:55,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:30:55" (3/3) ... [2024-11-16 19:30:55,405 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2024-11-16 19:30:55,436 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:30:55,437 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:30:55,437 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:30:55,476 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:30:55,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 43 transitions, 100 flow [2024-11-16 19:30:55,525 INFO L124 PetriNetUnfolderBase]: 9/41 cut-off events. [2024-11-16 19:30:55,525 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:30:55,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 9/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-16 19:30:55,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 43 transitions, 100 flow [2024-11-16 19:30:55,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 40 transitions, 92 flow [2024-11-16 19:30:55,537 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:30:55,543 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;@87ffc44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:30:55,543 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 19:30:55,551 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:30:55,551 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-11-16 19:30:55,552 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:30:55,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:55,552 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] [2024-11-16 19:30:55,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:30:55,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash -850540662, now seen corresponding path program 1 times [2024-11-16 19:30:55,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494685586] [2024-11-16 19:30:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:55,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:55,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:55,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494685586] [2024-11-16 19:30:55,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494685586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:55,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:55,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:30:55,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301752374] [2024-11-16 19:30:55,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:55,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:30:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:30:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:30:55,788 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-16 19:30:55,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2024-11-16 19:30:55,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:55,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-16 19:30:55,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:55,887 INFO L124 PetriNetUnfolderBase]: 149/280 cut-off events. [2024-11-16 19:30:55,889 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-16 19:30:55,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 280 events. 149/280 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1175 event pairs, 97 based on Foata normal form. 39/274 useless extension candidates. Maximal degree in co-relation 495. Up to 243 conditions per place. [2024-11-16 19:30:55,895 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 24 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-11-16 19:30:55,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 132 flow [2024-11-16 19:30:55,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:30:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:30:55,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-16 19:30:55,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-16 19:30:55,906 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 92 flow. Second operand 2 states and 56 transitions. [2024-11-16 19:30:55,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 132 flow [2024-11-16 19:30:55,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:30:55,910 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 76 flow [2024-11-16 19:30:55,912 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2024-11-16 19:30:55,915 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-16 19:30:55,916 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 76 flow [2024-11-16 19:30:55,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2024-11-16 19:30:55,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:55,916 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] [2024-11-16 19:30:55,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:30:55,917 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:30:55,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:55,919 INFO L85 PathProgramCache]: Analyzing trace with hash -671723185, now seen corresponding path program 1 times [2024-11-16 19:30:55,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:55,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525545658] [2024-11-16 19:30:55,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:55,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:56,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:56,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525545658] [2024-11-16 19:30:56,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525545658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:56,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:56,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:30:56,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992858155] [2024-11-16 19:30:56,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:56,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:30:56,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:56,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:30:56,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:30:56,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-16 19:30:56,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-11-16 19:30:56,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:56,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-16 19:30:56,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:56,229 INFO L124 PetriNetUnfolderBase]: 236/417 cut-off events. [2024-11-16 19:30:56,229 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:30:56,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 417 events. 236/417 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1810 event pairs, 64 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 820. Up to 240 conditions per place. [2024-11-16 19:30:56,233 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 36 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-11-16 19:30:56,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 183 flow [2024-11-16 19:30:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:30:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:30:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-16 19:30:56,237 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2024-11-16 19:30:56,237 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 76 flow. Second operand 4 states and 92 transitions. [2024-11-16 19:30:56,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 183 flow [2024-11-16 19:30:56,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 183 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:30:56,239 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 90 flow [2024-11-16 19:30:56,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-16 19:30:56,241 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-11-16 19:30:56,241 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 90 flow [2024-11-16 19:30:56,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-11-16 19:30:56,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:56,241 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:56,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:30:56,242 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:30:56,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:56,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1182612808, now seen corresponding path program 1 times [2024-11-16 19:30:56,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382818943] [2024-11-16 19:30:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:56,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382818943] [2024-11-16 19:30:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382818943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:56,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:30:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933995302] [2024-11-16 19:30:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:56,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:30:56,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:30:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:30:56,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-16 19:30:56,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-11-16 19:30:56,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:56,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-16 19:30:56,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:56,542 INFO L124 PetriNetUnfolderBase]: 219/399 cut-off events. [2024-11-16 19:30:56,542 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-16 19:30:56,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 399 events. 219/399 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1705 event pairs, 158 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 824. Up to 364 conditions per place. [2024-11-16 19:30:56,547 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 26 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2024-11-16 19:30:56,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 152 flow [2024-11-16 19:30:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:30:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:30:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-16 19:30:56,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-11-16 19:30:56,550 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 90 flow. Second operand 4 states and 77 transitions. [2024-11-16 19:30:56,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 152 flow [2024-11-16 19:30:56,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:30:56,552 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 100 flow [2024-11-16 19:30:56,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-11-16 19:30:56,553 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-11-16 19:30:56,553 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 100 flow [2024-11-16 19:30:56,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2024-11-16 19:30:56,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:56,554 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:56,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:30:56,554 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:30:56,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2005588456, now seen corresponding path program 1 times [2024-11-16 19:30:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500057127] [2024-11-16 19:30:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:30:56,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:56,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500057127] [2024-11-16 19:30:56,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500057127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:56,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:56,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:30:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59950750] [2024-11-16 19:30:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:56,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:30:56,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:56,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:30:56,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:30:56,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-16 19:30:56,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:56,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:56,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-16 19:30:56,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:56,755 INFO L124 PetriNetUnfolderBase]: 333/651 cut-off events. [2024-11-16 19:30:56,756 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-16 19:30:56,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 651 events. 333/651 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3153 event pairs, 126 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 1262. Up to 277 conditions per place. [2024-11-16 19:30:56,761 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 36 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2024-11-16 19:30:56,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 214 flow [2024-11-16 19:30:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:30:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:30:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-16 19:30:56,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201550387596899 [2024-11-16 19:30:56,764 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 100 flow. Second operand 3 states and 80 transitions. [2024-11-16 19:30:56,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 214 flow [2024-11-16 19:30:56,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:30:56,765 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 108 flow [2024-11-16 19:30:56,765 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, 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=108, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-16 19:30:56,766 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-11-16 19:30:56,766 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 108 flow [2024-11-16 19:30:56,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:30:56,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:56,767 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:56,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:30:56,768 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:30:56,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1899438473, now seen corresponding path program 1 times [2024-11-16 19:30:56,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120402840] [2024-11-16 19:30:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:56,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120402840] [2024-11-16 19:30:56,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120402840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:56,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:56,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:30:56,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292308733] [2024-11-16 19:30:56,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:56,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:30:56,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:30:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:30:56,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-16 19:30:56,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-16 19:30:56,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:56,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-16 19:30:56,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:56,953 INFO L124 PetriNetUnfolderBase]: 336/670 cut-off events. [2024-11-16 19:30:56,953 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-16 19:30:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 670 events. 336/670 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3199 event pairs, 141 based on Foata normal form. 12/618 useless extension candidates. Maximal degree in co-relation 1385. Up to 406 conditions per place. [2024-11-16 19:30:56,955 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 35 selfloop transitions, 2 changer transitions 4/53 dead transitions. [2024-11-16 19:30:56,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 225 flow [2024-11-16 19:30:56,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:30:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:30:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-16 19:30:56,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201550387596899 [2024-11-16 19:30:56,957 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 108 flow. Second operand 3 states and 80 transitions. [2024-11-16 19:30:56,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 225 flow [2024-11-16 19:30:56,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:30:56,959 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 118 flow [2024-11-16 19:30:56,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=118, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-16 19:30:56,960 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2024-11-16 19:30:56,961 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 118 flow [2024-11-16 19:30:56,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-16 19:30:56,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:56,962 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:56,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:30:56,962 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:30:56,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:56,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2010983840, now seen corresponding path program 1 times [2024-11-16 19:30:56,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:56,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596823888] [2024-11-16 19:30:56,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:56,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:30:57,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:57,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596823888] [2024-11-16 19:30:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596823888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:30:57,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:30:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:30:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692027908] [2024-11-16 19:30:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:30:57,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:30:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:30:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:30:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:30:57,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-16 19:30:57,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-16 19:30:57,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:30:57,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-16 19:30:57,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:30:57,190 INFO L124 PetriNetUnfolderBase]: 421/866 cut-off events. [2024-11-16 19:30:57,190 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-16 19:30:57,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 866 events. 421/866 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4550 event pairs, 349 based on Foata normal form. 16/789 useless extension candidates. Maximal degree in co-relation 1857. Up to 574 conditions per place. [2024-11-16 19:30:57,195 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 29 selfloop transitions, 2 changer transitions 20/61 dead transitions. [2024-11-16 19:30:57,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 280 flow [2024-11-16 19:30:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:30:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:30:57,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-16 19:30:57,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2024-11-16 19:30:57,197 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 118 flow. Second operand 5 states and 107 transitions. [2024-11-16 19:30:57,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 280 flow [2024-11-16 19:30:57,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:30:57,199 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 132 flow [2024-11-16 19:30:57,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-11-16 19:30:57,200 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2024-11-16 19:30:57,200 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 132 flow [2024-11-16 19:30:57,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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) [2024-11-16 19:30:57,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:30:57,201 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:30:57,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:30:57,201 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:30:57,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:30:57,201 INFO L85 PathProgramCache]: Analyzing trace with hash 7975584, now seen corresponding path program 1 times [2024-11-16 19:30:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:30:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257226494] [2024-11-16 19:30:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:30:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:30:58,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:30:58,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257226494] [2024-11-16 19:30:58,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257226494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:30:58,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887902367] [2024-11-16 19:30:58,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:30:58,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:30:58,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:30:58,141 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) [2024-11-16 19:30:58,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:30:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:30:58,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 19:30:58,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:30:58,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 19:30:58,974 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-16 19:30:58,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-16 19:30:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:30:59,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:30:59,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:30:59,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 83 [2024-11-16 19:30:59,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-11-16 19:30:59,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:30:59,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 150 [2024-11-16 19:31:00,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:31:00,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2024-11-16 19:31:00,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:31:00,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 231 treesize of output 247 [2024-11-16 19:31:01,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:31:01,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887902367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:31:01,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:31:01,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 31 [2024-11-16 19:31:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259682679] [2024-11-16 19:31:01,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:31:01,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 19:31:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:31:01,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 19:31:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2024-11-16 19:31:01,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-16 19:31:01,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 132 flow. Second operand has 32 states, 32 states have (on average 11.59375) internal successors, (371), 32 states have internal predecessors, (371), 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) [2024-11-16 19:31:01,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:31:01,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-16 19:31:01,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:31:06,059 INFO L124 PetriNetUnfolderBase]: 2172/3932 cut-off events. [2024-11-16 19:31:06,059 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2024-11-16 19:31:06,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8747 conditions, 3932 events. 2172/3932 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 24945 event pairs, 69 based on Foata normal form. 7/3535 useless extension candidates. Maximal degree in co-relation 8736. Up to 656 conditions per place. [2024-11-16 19:31:06,077 INFO L140 encePairwiseOnDemand]: 23/43 looper letters, 252 selfloop transitions, 86 changer transitions 158/503 dead transitions. [2024-11-16 19:31:06,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 503 transitions, 2365 flow [2024-11-16 19:31:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-16 19:31:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-16 19:31:06,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1012 transitions. [2024-11-16 19:31:06,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4057738572574178 [2024-11-16 19:31:06,081 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 132 flow. Second operand 58 states and 1012 transitions. [2024-11-16 19:31:06,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 503 transitions, 2365 flow [2024-11-16 19:31:06,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 503 transitions, 2347 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-16 19:31:06,089 INFO L231 Difference]: Finished difference. Result has 142 places, 132 transitions, 895 flow [2024-11-16 19:31:06,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=895, PETRI_PLACES=142, PETRI_TRANSITIONS=132} [2024-11-16 19:31:06,091 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2024-11-16 19:31:06,091 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 132 transitions, 895 flow [2024-11-16 19:31:06,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.59375) internal successors, (371), 32 states have internal predecessors, (371), 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) [2024-11-16 19:31:06,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:31:06,092 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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, 1, 1, 1] [2024-11-16 19:31:06,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:31:06,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:31:06,295 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:31:06,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:31:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1175316625, now seen corresponding path program 2 times [2024-11-16 19:31:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:31:06,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442995230] [2024-11-16 19:31:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:31:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:31:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:31:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:31:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:31:06,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442995230] [2024-11-16 19:31:06,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442995230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:31:06,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179556837] [2024-11-16 19:31:06,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:31:06,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:31:06,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:31:06,398 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) [2024-11-16 19:31:06,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:31:06,498 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:31:06,498 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:31:06,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:31:06,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:31:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:31:06,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:31:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:31:06,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179556837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:31:06,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:31:06,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 10 [2024-11-16 19:31:06,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151621103] [2024-11-16 19:31:06,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:31:06,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 19:31:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:31:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 19:31:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-16 19:31:06,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-16 19:31:06,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 132 transitions, 895 flow. Second operand has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 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) [2024-11-16 19:31:06,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:31:06,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-16 19:31:06,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:31:07,274 INFO L124 PetriNetUnfolderBase]: 1559/3313 cut-off events. [2024-11-16 19:31:07,274 INFO L125 PetriNetUnfolderBase]: For 27015/27165 co-relation queries the response was YES. [2024-11-16 19:31:07,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14637 conditions, 3313 events. 1559/3313 cut-off events. For 27015/27165 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22537 event pairs, 385 based on Foata normal form. 176/3313 useless extension candidates. Maximal degree in co-relation 14588. Up to 594 conditions per place. [2024-11-16 19:31:07,303 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 80 selfloop transitions, 18 changer transitions 118/226 dead transitions. [2024-11-16 19:31:07,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 226 transitions, 2045 flow [2024-11-16 19:31:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:31:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:31:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 273 transitions. [2024-11-16 19:31:07,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5290697674418605 [2024-11-16 19:31:07,305 INFO L175 Difference]: Start difference. First operand has 142 places, 132 transitions, 895 flow. Second operand 12 states and 273 transitions. [2024-11-16 19:31:07,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 226 transitions, 2045 flow [2024-11-16 19:31:07,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 226 transitions, 1711 flow, removed 163 selfloop flow, removed 15 redundant places. [2024-11-16 19:31:07,395 INFO L231 Difference]: Finished difference. Result has 126 places, 68 transitions, 431 flow [2024-11-16 19:31:07,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=431, PETRI_PLACES=126, PETRI_TRANSITIONS=68} [2024-11-16 19:31:07,396 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 88 predicate places. [2024-11-16 19:31:07,396 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 68 transitions, 431 flow [2024-11-16 19:31:07,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 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) [2024-11-16 19:31:07,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:31:07,397 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2024-11-16 19:31:07,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:31:07,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-16 19:31:07,598 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:31:07,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:31:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash 453886297, now seen corresponding path program 1 times [2024-11-16 19:31:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:31:07,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983206443] [2024-11-16 19:31:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:31:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:31:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:31:07,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 19:31:07,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:31:07,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983206443] [2024-11-16 19:31:07,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983206443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:31:07,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653982359] [2024-11-16 19:31:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:31:07,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:31:07,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:31:07,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:31:07,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:31:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:31:07,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 19:31:07,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:31:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 19:31:07,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:31:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-16 19:31:07,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653982359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:31:07,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:31:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-16 19:31:07,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440894364] [2024-11-16 19:31:07,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:31:07,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 19:31:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:31:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 19:31:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:31:07,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-16 19:31:07,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 68 transitions, 431 flow. Second operand has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 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) [2024-11-16 19:31:07,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:31:07,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-16 19:31:07,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:31:08,358 INFO L124 PetriNetUnfolderBase]: 1183/2308 cut-off events. [2024-11-16 19:31:08,358 INFO L125 PetriNetUnfolderBase]: For 7919/7960 co-relation queries the response was YES. [2024-11-16 19:31:08,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8943 conditions, 2308 events. 1183/2308 cut-off events. For 7919/7960 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13112 event pairs, 305 based on Foata normal form. 27/2221 useless extension candidates. Maximal degree in co-relation 8903. Up to 1194 conditions per place. [2024-11-16 19:31:08,375 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 80 selfloop transitions, 8 changer transitions 29/126 dead transitions. [2024-11-16 19:31:08,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 1019 flow [2024-11-16 19:31:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:31:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:31:08,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-11-16 19:31:08,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43488372093023253 [2024-11-16 19:31:08,376 INFO L175 Difference]: Start difference. First operand has 126 places, 68 transitions, 431 flow. Second operand 10 states and 187 transitions. [2024-11-16 19:31:08,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 1019 flow [2024-11-16 19:31:08,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 866 flow, removed 73 selfloop flow, removed 27 redundant places. [2024-11-16 19:31:08,393 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 393 flow [2024-11-16 19:31:08,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-11-16 19:31:08,394 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2024-11-16 19:31:08,394 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 393 flow [2024-11-16 19:31:08,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 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) [2024-11-16 19:31:08,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:31:08,395 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2024-11-16 19:31:08,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:31:08,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:31:08,596 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:31:08,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:31:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1712622119, now seen corresponding path program 2 times [2024-11-16 19:31:08,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:31:08,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202128089] [2024-11-16 19:31:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:31:08,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:31:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:31:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 19:31:08,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:31:08,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202128089] [2024-11-16 19:31:08,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202128089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:31:08,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:31:08,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:31:08,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76014585] [2024-11-16 19:31:08,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:31:08,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:31:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:31:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:31:08,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:31:08,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-16 19:31:08,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-16 19:31:08,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:31:08,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-16 19:31:08,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:31:08,935 INFO L124 PetriNetUnfolderBase]: 721/1499 cut-off events. [2024-11-16 19:31:08,936 INFO L125 PetriNetUnfolderBase]: For 1455/1481 co-relation queries the response was YES. [2024-11-16 19:31:08,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 1499 events. 721/1499 cut-off events. For 1455/1481 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7653 event pairs, 291 based on Foata normal form. 3/1421 useless extension candidates. Maximal degree in co-relation 4135. Up to 1145 conditions per place. [2024-11-16 19:31:08,943 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 60 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-11-16 19:31:08,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 539 flow [2024-11-16 19:31:08,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:31:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:31:08,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-16 19:31:08,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5162790697674419 [2024-11-16 19:31:08,944 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 393 flow. Second operand 5 states and 111 transitions. [2024-11-16 19:31:08,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 539 flow [2024-11-16 19:31:08,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 510 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-16 19:31:08,947 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 360 flow [2024-11-16 19:31:08,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-11-16 19:31:08,948 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2024-11-16 19:31:08,948 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 360 flow [2024-11-16 19:31:08,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2024-11-16 19:31:08,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:31:08,948 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-11-16 19:31:08,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 19:31:08,948 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:31:08,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:31:08,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1416683771, now seen corresponding path program 3 times [2024-11-16 19:31:08,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:31:08,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164308980] [2024-11-16 19:31:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:31:08,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:31:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:31:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:31:10,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:31:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164308980] [2024-11-16 19:31:10,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164308980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:31:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357386533] [2024-11-16 19:31:10,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:31:10,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:31:10,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:31:10,188 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) [2024-11-16 19:31:10,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:31:10,268 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 19:31:10,269 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:31:10,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 19:31:10,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:31:12,068 INFO L349 Elim1Store]: treesize reduction 286, result has 59.9 percent of original size [2024-11-16 19:31:12,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 184 treesize of output 500 [2024-11-16 19:31:31,021 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts.