./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:14:45,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:14:45,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:14:45,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:14:45,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:14:45,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:14:45,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:14:45,677 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:14:45,677 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:14:45,677 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:14:45,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:14:45,678 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:14:45,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:14:45,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:14:45,679 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:14:45,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:14:45,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:14:45,679 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:14:45,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:14:45,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:14:45,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:14:45,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:14:45,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:14:45,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:14:45,680 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:14:45,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:14:45,680 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:14:45,680 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:14:45,680 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:14:45,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:14:45,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:14:45,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:14:45,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:14:45,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:14:45,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:14:45,681 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:14:45,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:14:45,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:14:45,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:14:45,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:14:45,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:14:45,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:14:45,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:14:45,682 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 [2025-02-08 01:14:45,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:14:45,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:14:45,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:14:45,960 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:14:45,960 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:14:45,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2025-02-08 01:14:47,235 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ead591c6/a558f9bcb884403fb6afdd7b14991246/FLAG03bdbcd4b [2025-02-08 01:14:47,498 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:14:47,503 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2025-02-08 01:14:47,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ead591c6/a558f9bcb884403fb6afdd7b14991246/FLAG03bdbcd4b [2025-02-08 01:14:47,521 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7ead591c6/a558f9bcb884403fb6afdd7b14991246 [2025-02-08 01:14:47,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:14:47,524 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:14:47,525 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:14:47,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:14:47,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:14:47,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e597254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47, skipping insertion in model container [2025-02-08 01:14:47,530 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,544 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:14:47,685 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[3044,3057] [2025-02-08 01:14:47,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:14:47,709 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:14:47,730 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[3044,3057] [2025-02-08 01:14:47,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:14:47,752 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:14:47,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47 WrapperNode [2025-02-08 01:14:47,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:14:47,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:14:47,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:14:47,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:14:47,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,790 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 204 [2025-02-08 01:14:47,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:14:47,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:14:47,792 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:14:47,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:14:47,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,818 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 01:14:47,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,831 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,832 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:14:47,839 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:14:47,843 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:14:47,843 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:14:47,844 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (1/1) ... [2025-02-08 01:14:47,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:14:47,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:47,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:14:47,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:14:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:14:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:14:47,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:14:47,905 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:14:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:14:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:14:47,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:14:47,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:14:47,907 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:14:48,001 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:14:48,003 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:14:48,318 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:14:48,318 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:14:48,472 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:14:48,472 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:14:48,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:14:48 BoogieIcfgContainer [2025-02-08 01:14:48,472 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:14:48,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:14:48,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:14:48,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:14:48,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:14:47" (1/3) ... [2025-02-08 01:14:48,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b29cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:14:48, skipping insertion in model container [2025-02-08 01:14:48,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:14:47" (2/3) ... [2025-02-08 01:14:48,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e8b29cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:14:48, skipping insertion in model container [2025-02-08 01:14:48,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:14:48" (3/3) ... [2025-02-08 01:14:48,483 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2025-02-08 01:14:48,496 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:14:48,497 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-lamport.wvr.c that has 4 procedures, 60 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-08 01:14:48,498 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:14:48,549 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 01:14:48,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 141 flow [2025-02-08 01:14:48,662 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2025-02-08 01:14:48,667 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:14:48,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 1/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2025-02-08 01:14:48,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 60 transitions, 141 flow [2025-02-08 01:14:48,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 130 flow [2025-02-08 01:14:48,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:14:48,695 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;@429a8915, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:14:48,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:14:48,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:14:48,720 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2025-02-08 01:14:48,721 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:14:48,721 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:48,721 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:14:48,722 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:48,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:48,728 INFO L85 PathProgramCache]: Analyzing trace with hash -478483449, now seen corresponding path program 1 times [2025-02-08 01:14:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:48,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689762113] [2025-02-08 01:14:48,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:48,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:48,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-08 01:14:48,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-08 01:14:48,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:48,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:49,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:49,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689762113] [2025-02-08 01:14:49,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689762113] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:49,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:49,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:14:49,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860469616] [2025-02-08 01:14:49,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:49,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:14:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:49,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:14:49,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:14:49,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-02-08 01:14:49,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2025-02-08 01:14:49,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:49,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-02-08 01:14:49,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:49,906 INFO L124 PetriNetUnfolderBase]: 3049/4649 cut-off events. [2025-02-08 01:14:49,907 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2025-02-08 01:14:49,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9498 conditions, 4649 events. 3049/4649 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22948 event pairs, 3048 based on Foata normal form. 0/4611 useless extension candidates. Maximal degree in co-relation 9029. Up to 4555 conditions per place. [2025-02-08 01:14:49,939 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 50 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2025-02-08 01:14:49,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 236 flow [2025-02-08 01:14:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:14:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:14:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2025-02-08 01:14:49,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2025-02-08 01:14:49,955 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 130 flow. Second operand 3 states and 77 transitions. [2025-02-08 01:14:49,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 236 flow [2025-02-08 01:14:49,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 01:14:49,967 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 130 flow [2025-02-08 01:14:49,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2025-02-08 01:14:49,973 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2025-02-08 01:14:49,974 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 130 flow [2025-02-08 01:14:49,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2025-02-08 01:14:49,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:49,976 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:14:49,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:14:49,976 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:49,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1570491026, now seen corresponding path program 1 times [2025-02-08 01:14:49,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:49,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864200810] [2025-02-08 01:14:49,978 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:14:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:49,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-08 01:14:50,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 01:14:50,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:50,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:50,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:50,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864200810] [2025-02-08 01:14:50,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864200810] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:50,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:50,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:14:50,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58886501] [2025-02-08 01:14:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:50,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:14:50,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:50,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:14:50,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:14:50,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-02-08 01:14:50,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2025-02-08 01:14:50,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:50,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-02-08 01:14:50,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:50,609 INFO L124 PetriNetUnfolderBase]: 3021/4615 cut-off events. [2025-02-08 01:14:50,610 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-02-08 01:14:50,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9262 conditions, 4615 events. 3021/4615 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22876 event pairs, 2414 based on Foata normal form. 28/4613 useless extension candidates. Maximal degree in co-relation 9231. Up to 3630 conditions per place. [2025-02-08 01:14:50,631 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 67 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2025-02-08 01:14:50,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 304 flow [2025-02-08 01:14:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:14:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:14:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-02-08 01:14:50,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2025-02-08 01:14:50,634 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 130 flow. Second operand 3 states and 93 transitions. [2025-02-08 01:14:50,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 304 flow [2025-02-08 01:14:50,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 300 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:50,637 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 134 flow [2025-02-08 01:14:50,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2025-02-08 01:14:50,638 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2025-02-08 01:14:50,638 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 134 flow [2025-02-08 01:14:50,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2025-02-08 01:14:50,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:50,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:14:50,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:14:50,638 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:50,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:50,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2021296746, now seen corresponding path program 2 times [2025-02-08 01:14:50,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:50,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083687513] [2025-02-08 01:14:50,640 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:14:50,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:50,655 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-08 01:14:50,675 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 56 statements. [2025-02-08 01:14:50,679 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:14:50,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:50,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:50,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083687513] [2025-02-08 01:14:50,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083687513] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:50,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:50,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:50,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692734624] [2025-02-08 01:14:50,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:50,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:50,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:50,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:50,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:50,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-02-08 01:14:50,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:50,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:50,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-02-08 01:14:50,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:51,272 INFO L124 PetriNetUnfolderBase]: 3659/5759 cut-off events. [2025-02-08 01:14:51,273 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2025-02-08 01:14:51,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12115 conditions, 5759 events. 3659/5759 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 32436 event pairs, 1074 based on Foata normal form. 98/5856 useless extension candidates. Maximal degree in co-relation 12079. Up to 2617 conditions per place. [2025-02-08 01:14:51,297 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 95 selfloop transitions, 7 changer transitions 1/108 dead transitions. [2025-02-08 01:14:51,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 459 flow [2025-02-08 01:14:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2025-02-08 01:14:51,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-02-08 01:14:51,301 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 134 flow. Second operand 5 states and 144 transitions. [2025-02-08 01:14:51,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 459 flow [2025-02-08 01:14:51,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:14:51,307 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 172 flow [2025-02-08 01:14:51,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2025-02-08 01:14:51,308 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2025-02-08 01:14:51,308 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 172 flow [2025-02-08 01:14:51,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:51,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:51,309 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:14:51,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:14:51,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:51,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash 911834382, now seen corresponding path program 3 times [2025-02-08 01:14:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859487735] [2025-02-08 01:14:51,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:14:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:51,322 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 2 equivalence classes. [2025-02-08 01:14:51,337 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 56 statements. [2025-02-08 01:14:51,337 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:14:51,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:51,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:51,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859487735] [2025-02-08 01:14:51,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859487735] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:51,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:51,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:14:51,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682319437] [2025-02-08 01:14:51,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:51,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:14:51,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:51,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:14:51,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:14:51,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-02-08 01:14:51,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2025-02-08 01:14:51,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:51,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-02-08 01:14:51,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:51,801 INFO L124 PetriNetUnfolderBase]: 3503/5437 cut-off events. [2025-02-08 01:14:51,801 INFO L125 PetriNetUnfolderBase]: For 1335/1335 co-relation queries the response was YES. [2025-02-08 01:14:51,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12515 conditions, 5437 events. 3503/5437 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 28695 event pairs, 2656 based on Foata normal form. 28/5436 useless extension candidates. Maximal degree in co-relation 12475. Up to 4404 conditions per place. [2025-02-08 01:14:51,821 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 73 selfloop transitions, 2 changer transitions 1/81 dead transitions. [2025-02-08 01:14:51,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 381 flow [2025-02-08 01:14:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:14:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:14:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-02-08 01:14:51,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-02-08 01:14:51,823 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 172 flow. Second operand 3 states and 94 transitions. [2025-02-08 01:14:51,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 381 flow [2025-02-08 01:14:51,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:51,829 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 176 flow [2025-02-08 01:14:51,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2025-02-08 01:14:51,830 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 6 predicate places. [2025-02-08 01:14:51,830 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 176 flow [2025-02-08 01:14:51,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2025-02-08 01:14:51,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:51,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:14:51,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:14:51,831 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:51,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1434394374, now seen corresponding path program 4 times [2025-02-08 01:14:51,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:51,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281266389] [2025-02-08 01:14:51,832 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:14:51,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:51,842 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-02-08 01:14:51,857 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 56 statements. [2025-02-08 01:14:51,857 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:14:51,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:52,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:52,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281266389] [2025-02-08 01:14:52,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281266389] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:52,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:52,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:14:52,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343356963] [2025-02-08 01:14:52,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:52,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:14:52,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:52,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:14:52,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:14:52,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:14:52,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 176 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:52,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:52,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:14:52,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:54,487 INFO L124 PetriNetUnfolderBase]: 7521/11377 cut-off events. [2025-02-08 01:14:54,487 INFO L125 PetriNetUnfolderBase]: For 3897/3897 co-relation queries the response was YES. [2025-02-08 01:14:54,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26614 conditions, 11377 events. 7521/11377 cut-off events. For 3897/3897 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 64349 event pairs, 884 based on Foata normal form. 1/11376 useless extension candidates. Maximal degree in co-relation 26573. Up to 5188 conditions per place. [2025-02-08 01:14:54,529 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 393 selfloop transitions, 116 changer transitions 31/543 dead transitions. [2025-02-08 01:14:54,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 543 transitions, 2752 flow [2025-02-08 01:14:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-08 01:14:54,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-02-08 01:14:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 749 transitions. [2025-02-08 01:14:54,532 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3120833333333333 [2025-02-08 01:14:54,532 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 176 flow. Second operand 40 states and 749 transitions. [2025-02-08 01:14:54,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 543 transitions, 2752 flow [2025-02-08 01:14:54,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 543 transitions, 2688 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 01:14:54,541 INFO L231 Difference]: Finished difference. Result has 139 places, 183 transitions, 934 flow [2025-02-08 01:14:54,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=934, PETRI_PLACES=139, PETRI_TRANSITIONS=183} [2025-02-08 01:14:54,545 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 74 predicate places. [2025-02-08 01:14:54,545 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 183 transitions, 934 flow [2025-02-08 01:14:54,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:54,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:54,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:14:54,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:14:54,545 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:54,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:54,546 INFO L85 PathProgramCache]: Analyzing trace with hash 383969666, now seen corresponding path program 5 times [2025-02-08 01:14:54,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:54,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520471454] [2025-02-08 01:14:54,546 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:14:54,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:54,554 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-08 01:14:54,562 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 01:14:54,562 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:14:54,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:54,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:54,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520471454] [2025-02-08 01:14:54,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520471454] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:54,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:54,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:14:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467835493] [2025-02-08 01:14:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:54,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:14:54,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:54,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:14:54,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:14:54,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-02-08 01:14:54,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 183 transitions, 934 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:54,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:54,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-02-08 01:14:54,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:55,318 INFO L124 PetriNetUnfolderBase]: 4610/7399 cut-off events. [2025-02-08 01:14:55,318 INFO L125 PetriNetUnfolderBase]: For 19314/19328 co-relation queries the response was YES. [2025-02-08 01:14:55,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25469 conditions, 7399 events. 4610/7399 cut-off events. For 19314/19328 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 44121 event pairs, 1113 based on Foata normal form. 94/7478 useless extension candidates. Maximal degree in co-relation 25393. Up to 3133 conditions per place. [2025-02-08 01:14:55,371 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 200 selfloop transitions, 9 changer transitions 4/222 dead transitions. [2025-02-08 01:14:55,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 222 transitions, 1507 flow [2025-02-08 01:14:55,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:14:55,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:14:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-02-08 01:14:55,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4633333333333333 [2025-02-08 01:14:55,372 INFO L175 Difference]: Start difference. First operand has 139 places, 183 transitions, 934 flow. Second operand 5 states and 139 transitions. [2025-02-08 01:14:55,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 222 transitions, 1507 flow [2025-02-08 01:14:55,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 222 transitions, 1406 flow, removed 35 selfloop flow, removed 15 redundant places. [2025-02-08 01:14:55,452 INFO L231 Difference]: Finished difference. Result has 117 places, 124 transitions, 566 flow [2025-02-08 01:14:55,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=117, PETRI_TRANSITIONS=124} [2025-02-08 01:14:55,452 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 52 predicate places. [2025-02-08 01:14:55,453 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 124 transitions, 566 flow [2025-02-08 01:14:55,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:55,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:55,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:14:55,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:14:55,453 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:55,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:55,454 INFO L85 PathProgramCache]: Analyzing trace with hash 619968790, now seen corresponding path program 6 times [2025-02-08 01:14:55,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:55,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177778690] [2025-02-08 01:14:55,454 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:14:55,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:55,464 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 56 statements into 2 equivalence classes. [2025-02-08 01:14:55,497 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 56 statements. [2025-02-08 01:14:55,497 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:14:55,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:14:55,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:55,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177778690] [2025-02-08 01:14:55,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177778690] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:14:55,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:14:55,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:14:55,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504123495] [2025-02-08 01:14:55,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:14:55,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:14:55,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:55,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:14:55,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:14:55,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:14:55,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 124 transitions, 566 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:55,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:55,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:14:55,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:14:57,444 INFO L124 PetriNetUnfolderBase]: 5605/8736 cut-off events. [2025-02-08 01:14:57,445 INFO L125 PetriNetUnfolderBase]: For 9477/9477 co-relation queries the response was YES. [2025-02-08 01:14:57,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27582 conditions, 8736 events. 5605/8736 cut-off events. For 9477/9477 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 49329 event pairs, 1139 based on Foata normal form. 1/8736 useless extension candidates. Maximal degree in co-relation 27518. Up to 5602 conditions per place. [2025-02-08 01:14:57,485 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 204 selfloop transitions, 47 changer transitions 74/328 dead transitions. [2025-02-08 01:14:57,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 328 transitions, 2182 flow [2025-02-08 01:14:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 01:14:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-08 01:14:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 416 transitions. [2025-02-08 01:14:57,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2773333333333333 [2025-02-08 01:14:57,488 INFO L175 Difference]: Start difference. First operand has 117 places, 124 transitions, 566 flow. Second operand 25 states and 416 transitions. [2025-02-08 01:14:57,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 328 transitions, 2182 flow [2025-02-08 01:14:57,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 328 transitions, 2138 flow, removed 13 selfloop flow, removed 1 redundant places. [2025-02-08 01:14:57,530 INFO L231 Difference]: Finished difference. Result has 151 places, 131 transitions, 732 flow [2025-02-08 01:14:57,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=732, PETRI_PLACES=151, PETRI_TRANSITIONS=131} [2025-02-08 01:14:57,531 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 86 predicate places. [2025-02-08 01:14:57,531 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 131 transitions, 732 flow [2025-02-08 01:14:57,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:14:57,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:14:57,531 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2025-02-08 01:14:57,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:14:57,532 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:14:57,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:14:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1487907388, now seen corresponding path program 7 times [2025-02-08 01:14:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:14:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040129464] [2025-02-08 01:14:57,532 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:14:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:14:57,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-08 01:14:57,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 01:14:57,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:57,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:57,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:57,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:14:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040129464] [2025-02-08 01:14:57,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040129464] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:14:57,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204731185] [2025-02-08 01:14:57,950 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:14:57,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:14:57,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:14:57,956 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:14:57,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 01:14:58,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-08 01:14:58,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 01:14:58,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:14:58,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:14:58,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 01:14:58,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:14:58,105 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 23 treesize of output 1 [2025-02-08 01:14:58,351 INFO L349 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2025-02-08 01:14:58,352 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 22 [2025-02-08 01:14:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:58,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:14:59,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2025-02-08 01:14:59,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:14:59,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 124 [2025-02-08 01:14:59,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2025-02-08 01:14:59,531 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2025-02-08 01:14:59,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 1 [2025-02-08 01:14:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:14:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204731185] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:14:59,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:14:59,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 25 [2025-02-08 01:14:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498675139] [2025-02-08 01:14:59,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:14:59,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 01:14:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:14:59,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 01:14:59,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-02-08 01:14:59,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 60 [2025-02-08 01:14:59,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 131 transitions, 732 flow. Second operand has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 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) [2025-02-08 01:14:59,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:14:59,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 60 [2025-02-08 01:14:59,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:02,829 INFO L124 PetriNetUnfolderBase]: 10632/16655 cut-off events. [2025-02-08 01:15:02,829 INFO L125 PetriNetUnfolderBase]: For 32376/32400 co-relation queries the response was YES. [2025-02-08 01:15:02,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58321 conditions, 16655 events. 10632/16655 cut-off events. For 32376/32400 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 107367 event pairs, 1916 based on Foata normal form. 14/16656 useless extension candidates. Maximal degree in co-relation 58278. Up to 6959 conditions per place. [2025-02-08 01:15:02,903 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 128 selfloop transitions, 16 changer transitions 412/562 dead transitions. [2025-02-08 01:15:02,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 562 transitions, 4067 flow [2025-02-08 01:15:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 01:15:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-08 01:15:02,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 564 transitions. [2025-02-08 01:15:02,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32413793103448274 [2025-02-08 01:15:02,906 INFO L175 Difference]: Start difference. First operand has 151 places, 131 transitions, 732 flow. Second operand 29 states and 564 transitions. [2025-02-08 01:15:02,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 562 transitions, 4067 flow [2025-02-08 01:15:03,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 562 transitions, 3791 flow, removed 54 selfloop flow, removed 19 redundant places. [2025-02-08 01:15:03,052 INFO L231 Difference]: Finished difference. Result has 172 places, 132 transitions, 904 flow [2025-02-08 01:15:03,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=904, PETRI_PLACES=172, PETRI_TRANSITIONS=132} [2025-02-08 01:15:03,053 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 107 predicate places. [2025-02-08 01:15:03,053 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 132 transitions, 904 flow [2025-02-08 01:15:03,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 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) [2025-02-08 01:15:03,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:03,053 INFO L206 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, 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] [2025-02-08 01:15:03,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:15:03,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:03,254 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:03,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1642807803, now seen corresponding path program 8 times [2025-02-08 01:15:03,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:03,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98329089] [2025-02-08 01:15:03,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:03,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:03,273 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:03,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:03,288 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:15:03,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98329089] [2025-02-08 01:15:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98329089] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:03,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:03,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 01:15:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637671754] [2025-02-08 01:15:03,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:03,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:03,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:03,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:15:03,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:03,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 132 transitions, 904 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:03,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:03,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:03,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:05,333 INFO L124 PetriNetUnfolderBase]: 6183/9660 cut-off events. [2025-02-08 01:15:05,333 INFO L125 PetriNetUnfolderBase]: For 66451/66451 co-relation queries the response was YES. [2025-02-08 01:15:05,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43946 conditions, 9660 events. 6183/9660 cut-off events. For 66451/66451 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 56246 event pairs, 1220 based on Foata normal form. 1/9660 useless extension candidates. Maximal degree in co-relation 43848. Up to 5865 conditions per place. [2025-02-08 01:15:05,446 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 273 selfloop transitions, 29 changer transitions 90/395 dead transitions. [2025-02-08 01:15:05,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 395 transitions, 3518 flow [2025-02-08 01:15:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 01:15:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-08 01:15:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 460 transitions. [2025-02-08 01:15:05,455 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2839506172839506 [2025-02-08 01:15:05,455 INFO L175 Difference]: Start difference. First operand has 172 places, 132 transitions, 904 flow. Second operand 27 states and 460 transitions. [2025-02-08 01:15:05,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 395 transitions, 3518 flow [2025-02-08 01:15:05,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 395 transitions, 3138 flow, removed 186 selfloop flow, removed 14 redundant places. [2025-02-08 01:15:05,679 INFO L231 Difference]: Finished difference. Result has 187 places, 144 transitions, 1037 flow [2025-02-08 01:15:05,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1037, PETRI_PLACES=187, PETRI_TRANSITIONS=144} [2025-02-08 01:15:05,680 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 122 predicate places. [2025-02-08 01:15:05,680 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 144 transitions, 1037 flow [2025-02-08 01:15:05,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:05,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:05,680 INFO L206 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, 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] [2025-02-08 01:15:05,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 01:15:05,680 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:05,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:05,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1314553745, now seen corresponding path program 9 times [2025-02-08 01:15:05,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:05,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318695376] [2025-02-08 01:15:05,681 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:05,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:05,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:05,705 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:05,705 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:15:05,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:05,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318695376] [2025-02-08 01:15:05,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318695376] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:05,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:05,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:15:05,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613303700] [2025-02-08 01:15:05,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:05,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:15:05,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:05,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:15:05,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:15:05,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:05,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 144 transitions, 1037 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:05,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:05,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:05,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:08,261 INFO L124 PetriNetUnfolderBase]: 6788/10637 cut-off events. [2025-02-08 01:15:08,261 INFO L125 PetriNetUnfolderBase]: For 95576/95576 co-relation queries the response was YES. [2025-02-08 01:15:08,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51846 conditions, 10637 events. 6788/10637 cut-off events. For 95576/95576 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 62843 event pairs, 1875 based on Foata normal form. 1/10637 useless extension candidates. Maximal degree in co-relation 51767. Up to 6759 conditions per place. [2025-02-08 01:15:08,408 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 268 selfloop transitions, 58 changer transitions 92/421 dead transitions. [2025-02-08 01:15:08,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 421 transitions, 3728 flow [2025-02-08 01:15:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 01:15:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 01:15:08,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 537 transitions. [2025-02-08 01:15:08,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27121212121212124 [2025-02-08 01:15:08,413 INFO L175 Difference]: Start difference. First operand has 187 places, 144 transitions, 1037 flow. Second operand 33 states and 537 transitions. [2025-02-08 01:15:08,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 421 transitions, 3728 flow [2025-02-08 01:15:08,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 421 transitions, 3349 flow, removed 184 selfloop flow, removed 18 redundant places. [2025-02-08 01:15:08,775 INFO L231 Difference]: Finished difference. Result has 205 places, 151 transitions, 1215 flow [2025-02-08 01:15:08,775 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1215, PETRI_PLACES=205, PETRI_TRANSITIONS=151} [2025-02-08 01:15:08,776 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 140 predicate places. [2025-02-08 01:15:08,776 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 151 transitions, 1215 flow [2025-02-08 01:15:08,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:08,776 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:08,776 INFO L206 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, 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] [2025-02-08 01:15:08,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 01:15:08,778 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:08,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash -697507707, now seen corresponding path program 10 times [2025-02-08 01:15:08,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:08,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76389602] [2025-02-08 01:15:08,779 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:08,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:08,788 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:08,797 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 57 statements. [2025-02-08 01:15:08,798 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:15:08,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:08,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:08,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:08,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76389602] [2025-02-08 01:15:08,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76389602] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:08,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:08,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:15:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360407383] [2025-02-08 01:15:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:08,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:15:08,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:08,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:15:08,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:15:09,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:09,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 151 transitions, 1215 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:09,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:09,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:09,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:11,082 INFO L124 PetriNetUnfolderBase]: 6744/10577 cut-off events. [2025-02-08 01:15:11,082 INFO L125 PetriNetUnfolderBase]: For 76016/76016 co-relation queries the response was YES. [2025-02-08 01:15:11,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50313 conditions, 10577 events. 6744/10577 cut-off events. For 76016/76016 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 62533 event pairs, 1875 based on Foata normal form. 1/10577 useless extension candidates. Maximal degree in co-relation 50233. Up to 7080 conditions per place. [2025-02-08 01:15:11,169 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 238 selfloop transitions, 60 changer transitions 89/390 dead transitions. [2025-02-08 01:15:11,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 390 transitions, 3446 flow [2025-02-08 01:15:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 01:15:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-02-08 01:15:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 505 transitions. [2025-02-08 01:15:11,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2630208333333333 [2025-02-08 01:15:11,170 INFO L175 Difference]: Start difference. First operand has 205 places, 151 transitions, 1215 flow. Second operand 32 states and 505 transitions. [2025-02-08 01:15:11,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 390 transitions, 3446 flow [2025-02-08 01:15:11,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 390 transitions, 3124 flow, removed 106 selfloop flow, removed 26 redundant places. [2025-02-08 01:15:11,407 INFO L231 Difference]: Finished difference. Result has 208 places, 155 transitions, 1285 flow [2025-02-08 01:15:11,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1285, PETRI_PLACES=208, PETRI_TRANSITIONS=155} [2025-02-08 01:15:11,408 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 143 predicate places. [2025-02-08 01:15:11,408 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 155 transitions, 1285 flow [2025-02-08 01:15:11,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:11,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:11,408 INFO L206 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, 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] [2025-02-08 01:15:11,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 01:15:11,408 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:11,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -848192919, now seen corresponding path program 11 times [2025-02-08 01:15:11,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:11,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363697262] [2025-02-08 01:15:11,409 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:11,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:11,419 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:11,442 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:11,442 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:11,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:12,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363697262] [2025-02-08 01:15:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363697262] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:12,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124054108] [2025-02-08 01:15:12,726 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:12,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:12,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:12,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 01:15:12,770 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:12,792 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:12,792 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:12,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:12,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 01:15:12,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:13,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:15:13,072 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-02-08 01:15:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:13,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:13,282 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-02-08 01:15:13,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-02-08 01:15:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:13,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124054108] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:13,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:15:13,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17, 13] total 31 [2025-02-08 01:15:13,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907430870] [2025-02-08 01:15:13,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:13,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:13,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:13,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:13,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2025-02-08 01:15:13,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:13,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 155 transitions, 1285 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:13,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:13,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:13,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:15,148 INFO L124 PetriNetUnfolderBase]: 6512/10201 cut-off events. [2025-02-08 01:15:15,149 INFO L125 PetriNetUnfolderBase]: For 59746/59746 co-relation queries the response was YES. [2025-02-08 01:15:15,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47250 conditions, 10201 events. 6512/10201 cut-off events. For 59746/59746 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 59722 event pairs, 1811 based on Foata normal form. 1/10201 useless extension candidates. Maximal degree in co-relation 47137. Up to 7457 conditions per place. [2025-02-08 01:15:15,232 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 217 selfloop transitions, 46 changer transitions 69/335 dead transitions. [2025-02-08 01:15:15,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 335 transitions, 3053 flow [2025-02-08 01:15:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 01:15:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-08 01:15:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 383 transitions. [2025-02-08 01:15:15,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27753623188405796 [2025-02-08 01:15:15,234 INFO L175 Difference]: Start difference. First operand has 208 places, 155 transitions, 1285 flow. Second operand 23 states and 383 transitions. [2025-02-08 01:15:15,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 335 transitions, 3053 flow [2025-02-08 01:15:15,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 335 transitions, 2715 flow, removed 117 selfloop flow, removed 26 redundant places. [2025-02-08 01:15:15,406 INFO L231 Difference]: Finished difference. Result has 199 places, 156 transitions, 1235 flow [2025-02-08 01:15:15,406 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1235, PETRI_PLACES=199, PETRI_TRANSITIONS=156} [2025-02-08 01:15:15,407 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 134 predicate places. [2025-02-08 01:15:15,407 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 156 transitions, 1235 flow [2025-02-08 01:15:15,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:15,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:15,407 INFO L206 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, 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] [2025-02-08 01:15:15,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:15:15,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:15,608 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:15,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash -320952987, now seen corresponding path program 12 times [2025-02-08 01:15:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322455784] [2025-02-08 01:15:15,608 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:15,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:15,620 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:15,638 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:15,638 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:15:15,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:15,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:15,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322455784] [2025-02-08 01:15:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322455784] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:15,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:15,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 01:15:15,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140082909] [2025-02-08 01:15:15,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:15,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:15,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:15,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:15,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:15:15,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:15,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 156 transitions, 1235 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:15,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:15,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:15,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:17,477 INFO L124 PetriNetUnfolderBase]: 6416/10069 cut-off events. [2025-02-08 01:15:17,477 INFO L125 PetriNetUnfolderBase]: For 50042/50042 co-relation queries the response was YES. [2025-02-08 01:15:17,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45445 conditions, 10069 events. 6416/10069 cut-off events. For 50042/50042 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 59006 event pairs, 1842 based on Foata normal form. 1/10069 useless extension candidates. Maximal degree in co-relation 45371. Up to 7457 conditions per place. [2025-02-08 01:15:17,568 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 228 selfloop transitions, 52 changer transitions 56/339 dead transitions. [2025-02-08 01:15:17,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 339 transitions, 2938 flow [2025-02-08 01:15:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-08 01:15:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-08 01:15:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 399 transitions. [2025-02-08 01:15:17,573 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.266 [2025-02-08 01:15:17,573 INFO L175 Difference]: Start difference. First operand has 199 places, 156 transitions, 1235 flow. Second operand 25 states and 399 transitions. [2025-02-08 01:15:17,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 339 transitions, 2938 flow [2025-02-08 01:15:17,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 339 transitions, 2719 flow, removed 76 selfloop flow, removed 14 redundant places. [2025-02-08 01:15:17,724 INFO L231 Difference]: Finished difference. Result has 203 places, 162 transitions, 1333 flow [2025-02-08 01:15:17,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1333, PETRI_PLACES=203, PETRI_TRANSITIONS=162} [2025-02-08 01:15:17,725 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 138 predicate places. [2025-02-08 01:15:17,725 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 162 transitions, 1333 flow [2025-02-08 01:15:17,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:17,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:17,725 INFO L206 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, 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] [2025-02-08 01:15:17,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 01:15:17,726 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:17,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash 748566019, now seen corresponding path program 13 times [2025-02-08 01:15:17,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:17,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104063736] [2025-02-08 01:15:17,726 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:17,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 01:15:17,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:17,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:17,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:18,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104063736] [2025-02-08 01:15:18,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104063736] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968035171] [2025-02-08 01:15:18,578 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:18,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:18,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:18,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:18,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:15:18,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 01:15:18,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:18,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:18,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:18,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 01:15:18,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:18,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:15:18,976 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-02-08 01:15:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:18,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:19,193 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-02-08 01:15:19,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-02-08 01:15:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:19,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968035171] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:19,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:15:19,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17, 13] total 32 [2025-02-08 01:15:19,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481943552] [2025-02-08 01:15:19,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:19,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:19,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:19,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:19,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=916, Unknown=0, NotChecked=0, Total=992 [2025-02-08 01:15:19,268 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:19,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 162 transitions, 1333 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:19,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:19,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:19,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:20,935 INFO L124 PetriNetUnfolderBase]: 6124/9620 cut-off events. [2025-02-08 01:15:20,935 INFO L125 PetriNetUnfolderBase]: For 44763/44763 co-relation queries the response was YES. [2025-02-08 01:15:20,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43181 conditions, 9620 events. 6124/9620 cut-off events. For 44763/44763 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 55900 event pairs, 1811 based on Foata normal form. 1/9620 useless extension candidates. Maximal degree in co-relation 43069. Up to 7358 conditions per place. [2025-02-08 01:15:21,011 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 228 selfloop transitions, 46 changer transitions 27/304 dead transitions. [2025-02-08 01:15:21,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 304 transitions, 2633 flow [2025-02-08 01:15:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 01:15:21,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-08 01:15:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 335 transitions. [2025-02-08 01:15:21,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2791666666666667 [2025-02-08 01:15:21,013 INFO L175 Difference]: Start difference. First operand has 203 places, 162 transitions, 1333 flow. Second operand 20 states and 335 transitions. [2025-02-08 01:15:21,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 304 transitions, 2633 flow [2025-02-08 01:15:21,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 304 transitions, 2463 flow, removed 45 selfloop flow, removed 15 redundant places. [2025-02-08 01:15:21,156 INFO L231 Difference]: Finished difference. Result has 204 places, 159 transitions, 1250 flow [2025-02-08 01:15:21,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1250, PETRI_PLACES=204, PETRI_TRANSITIONS=159} [2025-02-08 01:15:21,156 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 139 predicate places. [2025-02-08 01:15:21,156 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 159 transitions, 1250 flow [2025-02-08 01:15:21,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:21,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:21,157 INFO L206 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, 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] [2025-02-08 01:15:21,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 01:15:21,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:21,361 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:21,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash 698995263, now seen corresponding path program 14 times [2025-02-08 01:15:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:21,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815284449] [2025-02-08 01:15:21,362 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:21,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:21,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:21,379 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:21,379 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:15:21,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:21,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:21,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815284449] [2025-02-08 01:15:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815284449] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:21,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 01:15:21,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806813623] [2025-02-08 01:15:21,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:21,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:21,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:21,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:21,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:15:21,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:21,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 159 transitions, 1250 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:21,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:21,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:21,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:23,209 INFO L124 PetriNetUnfolderBase]: 6059/9491 cut-off events. [2025-02-08 01:15:23,209 INFO L125 PetriNetUnfolderBase]: For 43670/43670 co-relation queries the response was YES. [2025-02-08 01:15:23,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42500 conditions, 9491 events. 6059/9491 cut-off events. For 43670/43670 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 54981 event pairs, 1823 based on Foata normal form. 1/9491 useless extension candidates. Maximal degree in co-relation 42428. Up to 7358 conditions per place. [2025-02-08 01:15:23,313 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 174 selfloop transitions, 36 changer transitions 73/286 dead transitions. [2025-02-08 01:15:23,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 286 transitions, 2443 flow [2025-02-08 01:15:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 01:15:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-08 01:15:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 302 transitions. [2025-02-08 01:15:23,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.296078431372549 [2025-02-08 01:15:23,315 INFO L175 Difference]: Start difference. First operand has 204 places, 159 transitions, 1250 flow. Second operand 17 states and 302 transitions. [2025-02-08 01:15:23,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 286 transitions, 2443 flow [2025-02-08 01:15:23,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 286 transitions, 2317 flow, removed 16 selfloop flow, removed 19 redundant places. [2025-02-08 01:15:23,448 INFO L231 Difference]: Finished difference. Result has 195 places, 145 transitions, 1132 flow [2025-02-08 01:15:23,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1132, PETRI_PLACES=195, PETRI_TRANSITIONS=145} [2025-02-08 01:15:23,449 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 130 predicate places. [2025-02-08 01:15:23,449 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 145 transitions, 1132 flow [2025-02-08 01:15:23,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:23,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:23,450 INFO L206 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, 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] [2025-02-08 01:15:23,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 01:15:23,450 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:23,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:23,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1597217687, now seen corresponding path program 15 times [2025-02-08 01:15:23,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:23,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9821597] [2025-02-08 01:15:23,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:23,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:23,459 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:23,467 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:23,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:15:23,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:23,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:23,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9821597] [2025-02-08 01:15:23,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9821597] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:23,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:23,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:15:23,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634796054] [2025-02-08 01:15:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:23,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:15:23,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:23,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:15:23,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:15:23,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:23,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 145 transitions, 1132 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:23,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:23,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:23,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:25,229 INFO L124 PetriNetUnfolderBase]: 7003/10930 cut-off events. [2025-02-08 01:15:25,229 INFO L125 PetriNetUnfolderBase]: For 48689/48689 co-relation queries the response was YES. [2025-02-08 01:15:25,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48490 conditions, 10930 events. 7003/10930 cut-off events. For 48689/48689 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 64878 event pairs, 1869 based on Foata normal form. 1/10930 useless extension candidates. Maximal degree in co-relation 48431. Up to 7256 conditions per place. [2025-02-08 01:15:25,319 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 238 selfloop transitions, 68 changer transitions 53/362 dead transitions. [2025-02-08 01:15:25,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 362 transitions, 3123 flow [2025-02-08 01:15:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 01:15:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-08 01:15:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 434 transitions. [2025-02-08 01:15:25,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2782051282051282 [2025-02-08 01:15:25,324 INFO L175 Difference]: Start difference. First operand has 195 places, 145 transitions, 1132 flow. Second operand 26 states and 434 transitions. [2025-02-08 01:15:25,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 362 transitions, 3123 flow [2025-02-08 01:15:25,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 362 transitions, 2898 flow, removed 38 selfloop flow, removed 14 redundant places. [2025-02-08 01:15:25,543 INFO L231 Difference]: Finished difference. Result has 195 places, 165 transitions, 1407 flow [2025-02-08 01:15:25,543 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1407, PETRI_PLACES=195, PETRI_TRANSITIONS=165} [2025-02-08 01:15:25,543 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 130 predicate places. [2025-02-08 01:15:25,544 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 165 transitions, 1407 flow [2025-02-08 01:15:25,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:25,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:25,544 INFO L206 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, 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] [2025-02-08 01:15:25,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 01:15:25,544 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:25,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:25,545 INFO L85 PathProgramCache]: Analyzing trace with hash 790913763, now seen corresponding path program 16 times [2025-02-08 01:15:25,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:25,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296520448] [2025-02-08 01:15:25,545 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:25,553 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:25,557 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 57 statements. [2025-02-08 01:15:25,557 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:15:25,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:25,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:25,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296520448] [2025-02-08 01:15:25,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296520448] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:25,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:25,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:15:25,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771940428] [2025-02-08 01:15:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:25,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:15:25,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:25,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:15:25,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:15:25,723 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:25,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 165 transitions, 1407 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:25,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:25,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:25,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:27,838 INFO L124 PetriNetUnfolderBase]: 7384/11584 cut-off events. [2025-02-08 01:15:27,838 INFO L125 PetriNetUnfolderBase]: For 57264/57264 co-relation queries the response was YES. [2025-02-08 01:15:27,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52600 conditions, 11584 events. 7384/11584 cut-off events. For 57264/57264 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 70499 event pairs, 1923 based on Foata normal form. 1/11584 useless extension candidates. Maximal degree in co-relation 52536. Up to 7065 conditions per place. [2025-02-08 01:15:28,003 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 282 selfloop transitions, 64 changer transitions 93/442 dead transitions. [2025-02-08 01:15:28,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 442 transitions, 3897 flow [2025-02-08 01:15:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 01:15:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 01:15:28,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 540 transitions. [2025-02-08 01:15:28,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2025-02-08 01:15:28,005 INFO L175 Difference]: Start difference. First operand has 195 places, 165 transitions, 1407 flow. Second operand 33 states and 540 transitions. [2025-02-08 01:15:28,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 442 transitions, 3897 flow [2025-02-08 01:15:28,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 442 transitions, 3641 flow, removed 79 selfloop flow, removed 18 redundant places. [2025-02-08 01:15:28,273 INFO L231 Difference]: Finished difference. Result has 222 places, 169 transitions, 1475 flow [2025-02-08 01:15:28,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1475, PETRI_PLACES=222, PETRI_TRANSITIONS=169} [2025-02-08 01:15:28,273 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 157 predicate places. [2025-02-08 01:15:28,274 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 169 transitions, 1475 flow [2025-02-08 01:15:28,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:28,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:28,275 INFO L206 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, 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] [2025-02-08 01:15:28,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 01:15:28,275 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:28,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash -2147354639, now seen corresponding path program 17 times [2025-02-08 01:15:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636774764] [2025-02-08 01:15:28,276 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:28,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:28,282 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:28,299 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:28,299 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:28,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:29,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:29,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636774764] [2025-02-08 01:15:29,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636774764] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:29,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000752278] [2025-02-08 01:15:29,325 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:29,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:29,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:29,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:29,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:15:29,385 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:29,417 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:29,417 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:29,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:29,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 01:15:29,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:29,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:15:29,703 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-02-08 01:15:29,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:29,711 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:29,969 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-02-08 01:15:29,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-02-08 01:15:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:30,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000752278] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:30,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:15:30,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17, 13] total 32 [2025-02-08 01:15:30,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268876636] [2025-02-08 01:15:30,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:30,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:30,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:30,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:30,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2025-02-08 01:15:30,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 169 transitions, 1475 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:30,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:30,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:30,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:32,629 INFO L124 PetriNetUnfolderBase]: 7656/12000 cut-off events. [2025-02-08 01:15:32,630 INFO L125 PetriNetUnfolderBase]: For 83790/83790 co-relation queries the response was YES. [2025-02-08 01:15:32,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58325 conditions, 12000 events. 7656/12000 cut-off events. For 83790/83790 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 73663 event pairs, 1925 based on Foata normal form. 1/12000 useless extension candidates. Maximal degree in co-relation 58251. Up to 8285 conditions per place. [2025-02-08 01:15:32,708 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 280 selfloop transitions, 60 changer transitions 69/412 dead transitions. [2025-02-08 01:15:32,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 412 transitions, 3861 flow [2025-02-08 01:15:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 01:15:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-08 01:15:32,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 471 transitions. [2025-02-08 01:15:32,711 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28035714285714286 [2025-02-08 01:15:32,712 INFO L175 Difference]: Start difference. First operand has 222 places, 169 transitions, 1475 flow. Second operand 28 states and 471 transitions. [2025-02-08 01:15:32,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 412 transitions, 3861 flow [2025-02-08 01:15:33,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 412 transitions, 3530 flow, removed 108 selfloop flow, removed 29 redundant places. [2025-02-08 01:15:33,101 INFO L231 Difference]: Finished difference. Result has 217 places, 179 transitions, 1620 flow [2025-02-08 01:15:33,101 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1620, PETRI_PLACES=217, PETRI_TRANSITIONS=179} [2025-02-08 01:15:33,102 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 152 predicate places. [2025-02-08 01:15:33,102 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 179 transitions, 1620 flow [2025-02-08 01:15:33,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:33,103 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:33,103 INFO L206 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, 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] [2025-02-08 01:15:33,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 01:15:33,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 01:15:33,304 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:33,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash 896177407, now seen corresponding path program 18 times [2025-02-08 01:15:33,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335387408] [2025-02-08 01:15:33,305 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:33,315 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:33,323 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:33,323 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:15:33,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:33,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:33,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335387408] [2025-02-08 01:15:33,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335387408] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:33,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:33,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:15:33,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682087438] [2025-02-08 01:15:33,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:33,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:15:33,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:33,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:15:33,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:15:33,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:33,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 179 transitions, 1620 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:33,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:33,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:33,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:35,622 INFO L124 PetriNetUnfolderBase]: 7610/11966 cut-off events. [2025-02-08 01:15:35,623 INFO L125 PetriNetUnfolderBase]: For 68370/68370 co-relation queries the response was YES. [2025-02-08 01:15:35,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56563 conditions, 11966 events. 7610/11966 cut-off events. For 68370/68370 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 73532 event pairs, 2007 based on Foata normal form. 1/11966 useless extension candidates. Maximal degree in co-relation 56493. Up to 7752 conditions per place. [2025-02-08 01:15:35,735 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 266 selfloop transitions, 65 changer transitions 79/413 dead transitions. [2025-02-08 01:15:35,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 413 transitions, 3718 flow [2025-02-08 01:15:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 01:15:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-08 01:15:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 488 transitions. [2025-02-08 01:15:35,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.28045977011494255 [2025-02-08 01:15:35,738 INFO L175 Difference]: Start difference. First operand has 217 places, 179 transitions, 1620 flow. Second operand 29 states and 488 transitions. [2025-02-08 01:15:35,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 413 transitions, 3718 flow [2025-02-08 01:15:36,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 413 transitions, 3460 flow, removed 87 selfloop flow, removed 16 redundant places. [2025-02-08 01:15:36,021 INFO L231 Difference]: Finished difference. Result has 230 places, 172 transitions, 1551 flow [2025-02-08 01:15:36,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1551, PETRI_PLACES=230, PETRI_TRANSITIONS=172} [2025-02-08 01:15:36,021 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 165 predicate places. [2025-02-08 01:15:36,022 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 172 transitions, 1551 flow [2025-02-08 01:15:36,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:36,023 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:36,023 INFO L206 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, 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] [2025-02-08 01:15:36,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 01:15:36,023 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:36,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash 740722753, now seen corresponding path program 19 times [2025-02-08 01:15:36,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920975049] [2025-02-08 01:15:36,024 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:36,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:36,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 01:15:36,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:36,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:36,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:37,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:37,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920975049] [2025-02-08 01:15:37,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920975049] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:37,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200323264] [2025-02-08 01:15:37,431 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:37,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:37,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:37,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:37,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 01:15:37,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 01:15:37,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:37,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:37,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:37,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 01:15:37,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:37,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:15:37,844 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-02-08 01:15:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:37,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:38,153 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-02-08 01:15:38,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-02-08 01:15:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:38,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200323264] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:38,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:15:38,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17, 13] total 33 [2025-02-08 01:15:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11234829] [2025-02-08 01:15:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:38,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:38,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:38,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:38,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=977, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 01:15:38,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:38,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 172 transitions, 1551 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:38,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:38,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:40,692 INFO L124 PetriNetUnfolderBase]: 7505/11809 cut-off events. [2025-02-08 01:15:40,692 INFO L125 PetriNetUnfolderBase]: For 67842/67842 co-relation queries the response was YES. [2025-02-08 01:15:40,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56534 conditions, 11809 events. 7505/11809 cut-off events. For 67842/67842 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 72287 event pairs, 1937 based on Foata normal form. 1/11809 useless extension candidates. Maximal degree in co-relation 56459. Up to 8155 conditions per place. [2025-02-08 01:15:40,788 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 286 selfloop transitions, 56 changer transitions 54/399 dead transitions. [2025-02-08 01:15:40,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 399 transitions, 3622 flow [2025-02-08 01:15:40,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 01:15:40,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-08 01:15:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 452 transitions. [2025-02-08 01:15:40,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27901234567901234 [2025-02-08 01:15:40,790 INFO L175 Difference]: Start difference. First operand has 230 places, 172 transitions, 1551 flow. Second operand 27 states and 452 transitions. [2025-02-08 01:15:40,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 399 transitions, 3622 flow [2025-02-08 01:15:41,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 399 transitions, 3323 flow, removed 61 selfloop flow, removed 31 redundant places. [2025-02-08 01:15:41,037 INFO L231 Difference]: Finished difference. Result has 219 places, 175 transitions, 1534 flow [2025-02-08 01:15:41,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1534, PETRI_PLACES=219, PETRI_TRANSITIONS=175} [2025-02-08 01:15:41,037 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 154 predicate places. [2025-02-08 01:15:41,037 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 175 transitions, 1534 flow [2025-02-08 01:15:41,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:41,038 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:41,038 INFO L206 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, 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] [2025-02-08 01:15:41,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 01:15:41,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:41,239 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:41,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1346892905, now seen corresponding path program 20 times [2025-02-08 01:15:41,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:41,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816286926] [2025-02-08 01:15:41,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:41,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:41,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:41,265 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:15:41,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:41,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:41,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816286926] [2025-02-08 01:15:41,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816286926] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:41,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:41,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:15:41,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705469597] [2025-02-08 01:15:41,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:41,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:15:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:41,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:15:41,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:15:41,546 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:41,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 175 transitions, 1534 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:41,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:41,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:41,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:43,492 INFO L124 PetriNetUnfolderBase]: 7456/11771 cut-off events. [2025-02-08 01:15:43,493 INFO L125 PetriNetUnfolderBase]: For 62656/62656 co-relation queries the response was YES. [2025-02-08 01:15:43,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55346 conditions, 11771 events. 7456/11771 cut-off events. For 62656/62656 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 72369 event pairs, 1765 based on Foata normal form. 2/11772 useless extension candidates. Maximal degree in co-relation 55277. Up to 7181 conditions per place. [2025-02-08 01:15:43,684 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 275 selfloop transitions, 79 changer transitions 73/430 dead transitions. [2025-02-08 01:15:43,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 430 transitions, 3874 flow [2025-02-08 01:15:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 01:15:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-08 01:15:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 510 transitions. [2025-02-08 01:15:43,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2833333333333333 [2025-02-08 01:15:43,685 INFO L175 Difference]: Start difference. First operand has 219 places, 175 transitions, 1534 flow. Second operand 30 states and 510 transitions. [2025-02-08 01:15:43,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 430 transitions, 3874 flow [2025-02-08 01:15:43,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 430 transitions, 3686 flow, removed 39 selfloop flow, removed 19 redundant places. [2025-02-08 01:15:43,867 INFO L231 Difference]: Finished difference. Result has 235 places, 179 transitions, 1697 flow [2025-02-08 01:15:43,867 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1697, PETRI_PLACES=235, PETRI_TRANSITIONS=179} [2025-02-08 01:15:43,867 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 170 predicate places. [2025-02-08 01:15:43,867 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 179 transitions, 1697 flow [2025-02-08 01:15:43,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:43,868 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:43,868 INFO L206 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, 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] [2025-02-08 01:15:43,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 01:15:43,868 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:43,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:43,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1696550047, now seen corresponding path program 21 times [2025-02-08 01:15:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:43,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969618982] [2025-02-08 01:15:43,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:43,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:43,873 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:43,880 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:43,880 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:15:43,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:43,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969618982] [2025-02-08 01:15:43,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969618982] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:43,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:43,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 01:15:43,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033510084] [2025-02-08 01:15:43,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:43,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:43,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:43,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:15:44,008 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:44,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 179 transitions, 1697 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:44,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:44,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:44,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:46,496 INFO L124 PetriNetUnfolderBase]: 7504/11872 cut-off events. [2025-02-08 01:15:46,496 INFO L125 PetriNetUnfolderBase]: For 76236/76236 co-relation queries the response was YES. [2025-02-08 01:15:46,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58545 conditions, 11872 events. 7504/11872 cut-off events. For 76236/76236 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 73137 event pairs, 1781 based on Foata normal form. 1/11872 useless extension candidates. Maximal degree in co-relation 58468. Up to 7161 conditions per place. [2025-02-08 01:15:46,566 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 304 selfloop transitions, 87 changer transitions 56/450 dead transitions. [2025-02-08 01:15:46,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 450 transitions, 4204 flow [2025-02-08 01:15:46,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 01:15:46,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 01:15:46,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 543 transitions. [2025-02-08 01:15:46,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27424242424242423 [2025-02-08 01:15:46,567 INFO L175 Difference]: Start difference. First operand has 235 places, 179 transitions, 1697 flow. Second operand 33 states and 543 transitions. [2025-02-08 01:15:46,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 450 transitions, 4204 flow [2025-02-08 01:15:46,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 450 transitions, 3849 flow, removed 88 selfloop flow, removed 34 redundant places. [2025-02-08 01:15:46,865 INFO L231 Difference]: Finished difference. Result has 237 places, 187 transitions, 1806 flow [2025-02-08 01:15:46,866 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1806, PETRI_PLACES=237, PETRI_TRANSITIONS=187} [2025-02-08 01:15:46,866 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 172 predicate places. [2025-02-08 01:15:46,866 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 187 transitions, 1806 flow [2025-02-08 01:15:46,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:46,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:46,867 INFO L206 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, 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] [2025-02-08 01:15:46,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 01:15:46,867 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:46,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1491158017, now seen corresponding path program 22 times [2025-02-08 01:15:46,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:46,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517826715] [2025-02-08 01:15:46,868 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:46,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:46,876 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:46,880 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 57 statements. [2025-02-08 01:15:46,880 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:15:46,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517826715] [2025-02-08 01:15:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517826715] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:46,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:46,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 01:15:46,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626743845] [2025-02-08 01:15:46,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:46,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:46,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:46,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:46,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:15:47,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:47,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 187 transitions, 1806 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:47,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:47,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:47,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:48,876 INFO L124 PetriNetUnfolderBase]: 7228/11460 cut-off events. [2025-02-08 01:15:48,876 INFO L125 PetriNetUnfolderBase]: For 69365/69365 co-relation queries the response was YES. [2025-02-08 01:15:48,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55930 conditions, 11460 events. 7228/11460 cut-off events. For 69365/69365 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 70041 event pairs, 1963 based on Foata normal form. 1/11460 useless extension candidates. Maximal degree in co-relation 55857. Up to 8139 conditions per place. [2025-02-08 01:15:48,943 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 276 selfloop transitions, 63 changer transitions 50/392 dead transitions. [2025-02-08 01:15:48,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 392 transitions, 3691 flow [2025-02-08 01:15:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 01:15:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-08 01:15:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 439 transitions. [2025-02-08 01:15:48,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27098765432098765 [2025-02-08 01:15:48,944 INFO L175 Difference]: Start difference. First operand has 237 places, 187 transitions, 1806 flow. Second operand 27 states and 439 transitions. [2025-02-08 01:15:48,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 392 transitions, 3691 flow [2025-02-08 01:15:49,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 392 transitions, 3425 flow, removed 50 selfloop flow, removed 28 redundant places. [2025-02-08 01:15:49,140 INFO L231 Difference]: Finished difference. Result has 239 places, 189 transitions, 1790 flow [2025-02-08 01:15:49,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1790, PETRI_PLACES=239, PETRI_TRANSITIONS=189} [2025-02-08 01:15:49,141 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 174 predicate places. [2025-02-08 01:15:49,141 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 189 transitions, 1790 flow [2025-02-08 01:15:49,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:49,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:49,141 INFO L206 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, 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] [2025-02-08 01:15:49,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 01:15:49,141 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:49,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:49,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2101317621, now seen corresponding path program 23 times [2025-02-08 01:15:49,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:49,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574253635] [2025-02-08 01:15:49,142 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:49,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:49,147 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:49,157 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:49,157 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:49,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:50,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:50,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574253635] [2025-02-08 01:15:50,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574253635] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072416676] [2025-02-08 01:15:50,176 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:50,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:50,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:50,179 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:50,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 01:15:50,224 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:50,245 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:50,245 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:15:50,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:50,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 01:15:50,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:50,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:15:50,476 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-02-08 01:15:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:50,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:50,713 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-02-08 01:15:50,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-02-08 01:15:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:50,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072416676] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:50,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:15:50,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17, 13] total 32 [2025-02-08 01:15:50,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261656737] [2025-02-08 01:15:50,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:50,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:50,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:50,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:50,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=915, Unknown=0, NotChecked=0, Total=992 [2025-02-08 01:15:50,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:50,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 189 transitions, 1790 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:50,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:50,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:50,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:52,897 INFO L124 PetriNetUnfolderBase]: 7265/11495 cut-off events. [2025-02-08 01:15:52,897 INFO L125 PetriNetUnfolderBase]: For 77531/77531 co-relation queries the response was YES. [2025-02-08 01:15:52,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56650 conditions, 11495 events. 7265/11495 cut-off events. For 77531/77531 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 69924 event pairs, 2242 based on Foata normal form. 1/11495 useless extension candidates. Maximal degree in co-relation 56575. Up to 8589 conditions per place. [2025-02-08 01:15:52,990 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 275 selfloop transitions, 61 changer transitions 43/382 dead transitions. [2025-02-08 01:15:52,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 382 transitions, 3618 flow [2025-02-08 01:15:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 01:15:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-08 01:15:52,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 439 transitions. [2025-02-08 01:15:52,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25229885057471263 [2025-02-08 01:15:52,992 INFO L175 Difference]: Start difference. First operand has 239 places, 189 transitions, 1790 flow. Second operand 29 states and 439 transitions. [2025-02-08 01:15:52,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 382 transitions, 3618 flow [2025-02-08 01:15:53,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 382 transitions, 3349 flow, removed 53 selfloop flow, removed 22 redundant places. [2025-02-08 01:15:53,251 INFO L231 Difference]: Finished difference. Result has 240 places, 196 transitions, 1825 flow [2025-02-08 01:15:53,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1825, PETRI_PLACES=240, PETRI_TRANSITIONS=196} [2025-02-08 01:15:53,251 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 175 predicate places. [2025-02-08 01:15:53,251 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 196 transitions, 1825 flow [2025-02-08 01:15:53,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:53,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:53,252 INFO L206 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, 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] [2025-02-08 01:15:53,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 01:15:53,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-08 01:15:53,453 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:53,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash 97066083, now seen corresponding path program 24 times [2025-02-08 01:15:53,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989791311] [2025-02-08 01:15:53,454 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:53,459 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:15:53,469 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:15:53,469 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-08 01:15:53,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:53,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:53,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:53,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989791311] [2025-02-08 01:15:53,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989791311] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:53,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:53,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:15:53,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255280961] [2025-02-08 01:15:53,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:53,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:15:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:53,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:15:53,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:15:53,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:53,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 196 transitions, 1825 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:53,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:53,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:53,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:55,859 INFO L124 PetriNetUnfolderBase]: 7920/12490 cut-off events. [2025-02-08 01:15:55,860 INFO L125 PetriNetUnfolderBase]: For 76385/76385 co-relation queries the response was YES. [2025-02-08 01:15:55,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60224 conditions, 12490 events. 7920/12490 cut-off events. For 76385/76385 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 76564 event pairs, 1981 based on Foata normal form. 1/12490 useless extension candidates. Maximal degree in co-relation 60151. Up to 7309 conditions per place. [2025-02-08 01:15:55,951 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 317 selfloop transitions, 100 changer transitions 33/453 dead transitions. [2025-02-08 01:15:55,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 453 transitions, 4302 flow [2025-02-08 01:15:55,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-08 01:15:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2025-02-08 01:15:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 510 transitions. [2025-02-08 01:15:55,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27419354838709675 [2025-02-08 01:15:55,952 INFO L175 Difference]: Start difference. First operand has 240 places, 196 transitions, 1825 flow. Second operand 31 states and 510 transitions. [2025-02-08 01:15:55,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 453 transitions, 4302 flow [2025-02-08 01:15:56,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 453 transitions, 4110 flow, removed 53 selfloop flow, removed 12 redundant places. [2025-02-08 01:15:56,192 INFO L231 Difference]: Finished difference. Result has 259 places, 215 transitions, 2215 flow [2025-02-08 01:15:56,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1670, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2215, PETRI_PLACES=259, PETRI_TRANSITIONS=215} [2025-02-08 01:15:56,192 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 194 predicate places. [2025-02-08 01:15:56,192 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 215 transitions, 2215 flow [2025-02-08 01:15:56,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:56,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:56,193 INFO L206 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, 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] [2025-02-08 01:15:56,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-08 01:15:56,193 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:56,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash 615006459, now seen corresponding path program 25 times [2025-02-08 01:15:56,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:56,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086043141] [2025-02-08 01:15:56,194 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:56,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:56,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 01:15:56,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:56,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:56,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:56,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:56,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086043141] [2025-02-08 01:15:56,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086043141] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:56,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494338729] [2025-02-08 01:15:56,914 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:15:56,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:56,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:56,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:56,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 01:15:56,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-02-08 01:15:56,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:15:56,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:56,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:56,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-08 01:15:56,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:57,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:15:57,283 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-02-08 01:15:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:57,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:57,488 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-02-08 01:15:57,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-02-08 01:15:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:57,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494338729] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:57,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-08 01:15:57,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17, 13] total 31 [2025-02-08 01:15:57,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058724912] [2025-02-08 01:15:57,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:57,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:15:57,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:57,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:15:57,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2025-02-08 01:15:57,545 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:15:57,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 215 transitions, 2215 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:15:57,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:57,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:15:57,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:59,529 INFO L124 PetriNetUnfolderBase]: 7623/12022 cut-off events. [2025-02-08 01:15:59,529 INFO L125 PetriNetUnfolderBase]: For 82334/82334 co-relation queries the response was YES. [2025-02-08 01:15:59,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60067 conditions, 12022 events. 7623/12022 cut-off events. For 82334/82334 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 73470 event pairs, 2234 based on Foata normal form. 1/12022 useless extension candidates. Maximal degree in co-relation 59987. Up to 8903 conditions per place. [2025-02-08 01:15:59,634 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 237 selfloop transitions, 60 changer transitions 68/368 dead transitions. [2025-02-08 01:15:59,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 368 transitions, 3691 flow [2025-02-08 01:15:59,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 01:15:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-02-08 01:15:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 355 transitions. [2025-02-08 01:15:59,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29583333333333334 [2025-02-08 01:15:59,635 INFO L175 Difference]: Start difference. First operand has 259 places, 215 transitions, 2215 flow. Second operand 20 states and 355 transitions. [2025-02-08 01:15:59,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 368 transitions, 3691 flow [2025-02-08 01:15:59,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 368 transitions, 3447 flow, removed 75 selfloop flow, removed 14 redundant places. [2025-02-08 01:15:59,999 INFO L231 Difference]: Finished difference. Result has 262 places, 201 transitions, 1999 flow [2025-02-08 01:16:00,000 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1999, PETRI_PLACES=262, PETRI_TRANSITIONS=201} [2025-02-08 01:16:00,000 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 197 predicate places. [2025-02-08 01:16:00,000 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 201 transitions, 1999 flow [2025-02-08 01:16:00,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:16:00,000 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:00,000 INFO L206 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, 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] [2025-02-08 01:16:00,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 01:16:00,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:16:00,206 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:16:00,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1548534215, now seen corresponding path program 26 times [2025-02-08 01:16:00,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:00,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175577871] [2025-02-08 01:16:00,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:16:00,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:00,212 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:16:00,219 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:16:00,220 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:16:00,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:16:00,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:00,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175577871] [2025-02-08 01:16:00,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175577871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:00,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:00,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:16:00,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810481997] [2025-02-08 01:16:00,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:00,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:16:00,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:00,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:16:00,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:16:00,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:16:00,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 201 transitions, 1999 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:00,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:00,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:16:00,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:02,499 INFO L124 PetriNetUnfolderBase]: 7459/11735 cut-off events. [2025-02-08 01:16:02,500 INFO L125 PetriNetUnfolderBase]: For 70547/70547 co-relation queries the response was YES. [2025-02-08 01:16:02,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57789 conditions, 11735 events. 7459/11735 cut-off events. For 70547/70547 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 71200 event pairs, 2199 based on Foata normal form. 1/11735 useless extension candidates. Maximal degree in co-relation 57710. Up to 8957 conditions per place. [2025-02-08 01:16:02,712 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 264 selfloop transitions, 71 changer transitions 41/379 dead transitions. [2025-02-08 01:16:02,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 379 transitions, 3649 flow [2025-02-08 01:16:02,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 01:16:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-02-08 01:16:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 429 transitions. [2025-02-08 01:16:02,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.25535714285714284 [2025-02-08 01:16:02,713 INFO L175 Difference]: Start difference. First operand has 262 places, 201 transitions, 1999 flow. Second operand 28 states and 429 transitions. [2025-02-08 01:16:02,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 379 transitions, 3649 flow [2025-02-08 01:16:03,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 379 transitions, 3447 flow, removed 31 selfloop flow, removed 17 redundant places. [2025-02-08 01:16:03,064 INFO L231 Difference]: Finished difference. Result has 254 places, 203 transitions, 2039 flow [2025-02-08 01:16:03,064 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2039, PETRI_PLACES=254, PETRI_TRANSITIONS=203} [2025-02-08 01:16:03,065 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 189 predicate places. [2025-02-08 01:16:03,065 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 203 transitions, 2039 flow [2025-02-08 01:16:03,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:03,065 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:03,065 INFO L206 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, 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] [2025-02-08 01:16:03,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-08 01:16:03,066 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:16:03,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:03,066 INFO L85 PathProgramCache]: Analyzing trace with hash -758777421, now seen corresponding path program 27 times [2025-02-08 01:16:03,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:03,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533875780] [2025-02-08 01:16:03,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:16:03,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:03,074 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:16:03,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-02-08 01:16:03,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:16:03,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:16:03,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533875780] [2025-02-08 01:16:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533875780] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:03,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:03,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 01:16:03,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31858658] [2025-02-08 01:16:03,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:03,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 01:16:03,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:03,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 01:16:03,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-02-08 01:16:03,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:16:03,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 203 transitions, 2039 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:03,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:03,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:16:03,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:05,401 INFO L124 PetriNetUnfolderBase]: 7499/11795 cut-off events. [2025-02-08 01:16:05,402 INFO L125 PetriNetUnfolderBase]: For 66311/66311 co-relation queries the response was YES. [2025-02-08 01:16:05,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57421 conditions, 11795 events. 7499/11795 cut-off events. For 66311/66311 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 71534 event pairs, 2154 based on Foata normal form. 1/11795 useless extension candidates. Maximal degree in co-relation 57346. Up to 8159 conditions per place. [2025-02-08 01:16:05,536 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 299 selfloop transitions, 92 changer transitions 26/420 dead transitions. [2025-02-08 01:16:05,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 420 transitions, 4087 flow [2025-02-08 01:16:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-08 01:16:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-08 01:16:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 472 transitions. [2025-02-08 01:16:05,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26222222222222225 [2025-02-08 01:16:05,537 INFO L175 Difference]: Start difference. First operand has 254 places, 203 transitions, 2039 flow. Second operand 30 states and 472 transitions. [2025-02-08 01:16:05,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 420 transitions, 4087 flow [2025-02-08 01:16:05,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 420 transitions, 3842 flow, removed 36 selfloop flow, removed 21 redundant places. [2025-02-08 01:16:05,806 INFO L231 Difference]: Finished difference. Result has 262 places, 225 transitions, 2349 flow [2025-02-08 01:16:05,806 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2349, PETRI_PLACES=262, PETRI_TRANSITIONS=225} [2025-02-08 01:16:05,806 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 197 predicate places. [2025-02-08 01:16:05,806 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 225 transitions, 2349 flow [2025-02-08 01:16:05,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:05,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:05,807 INFO L206 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, 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] [2025-02-08 01:16:05,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-08 01:16:05,807 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:16:05,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:05,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1894119119, now seen corresponding path program 28 times [2025-02-08 01:16:05,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:05,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492611490] [2025-02-08 01:16:05,807 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:16:05,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:05,815 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:16:05,818 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 57 statements. [2025-02-08 01:16:05,818 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 01:16:05,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:16:05,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492611490] [2025-02-08 01:16:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492611490] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:05,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:16:05,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-08 01:16:05,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889679579] [2025-02-08 01:16:05,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:05,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:16:05,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:05,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:16:05,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:16:05,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:16:05,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 225 transitions, 2349 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:16:05,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:05,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:16:05,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:08,040 INFO L124 PetriNetUnfolderBase]: 8723/13616 cut-off events. [2025-02-08 01:16:08,040 INFO L125 PetriNetUnfolderBase]: For 80854/80854 co-relation queries the response was YES. [2025-02-08 01:16:08,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67740 conditions, 13616 events. 8723/13616 cut-off events. For 80854/80854 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 83674 event pairs, 2675 based on Foata normal form. 1/13616 useless extension candidates. Maximal degree in co-relation 67660. Up to 10602 conditions per place. [2025-02-08 01:16:08,158 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 343 selfloop transitions, 94 changer transitions 28/468 dead transitions. [2025-02-08 01:16:08,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 468 transitions, 5025 flow [2025-02-08 01:16:08,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-08 01:16:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-02-08 01:16:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 490 transitions. [2025-02-08 01:16:08,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2474747474747475 [2025-02-08 01:16:08,159 INFO L175 Difference]: Start difference. First operand has 262 places, 225 transitions, 2349 flow. Second operand 33 states and 490 transitions. [2025-02-08 01:16:08,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 468 transitions, 5025 flow [2025-02-08 01:16:08,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 468 transitions, 4734 flow, removed 108 selfloop flow, removed 14 redundant places. [2025-02-08 01:16:08,541 INFO L231 Difference]: Finished difference. Result has 293 places, 279 transitions, 3210 flow [2025-02-08 01:16:08,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3210, PETRI_PLACES=293, PETRI_TRANSITIONS=279} [2025-02-08 01:16:08,542 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 228 predicate places. [2025-02-08 01:16:08,542 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 279 transitions, 3210 flow [2025-02-08 01:16:08,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:16:08,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:08,542 INFO L206 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, 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] [2025-02-08 01:16:08,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-08 01:16:08,543 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:16:08,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -749364359, now seen corresponding path program 29 times [2025-02-08 01:16:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:08,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666378957] [2025-02-08 01:16:08,543 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:16:08,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:08,557 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:16:08,578 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:16:08,578 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:16:08,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:09,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:16:09,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:09,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666378957] [2025-02-08 01:16:09,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666378957] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:16:09,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940659929] [2025-02-08 01:16:09,673 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:16:09,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:16:09,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:16:09,675 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:16:09,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 01:16:09,728 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-02-08 01:16:09,754 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 01:16:09,754 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:16:09,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:09,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 01:16:09,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:16:09,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 01:16:09,979 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-02-08 01:16:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:16:09,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:16:09,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940659929] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:16:09,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:16:09,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 24 [2025-02-08 01:16:09,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571151832] [2025-02-08 01:16:09,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:16:09,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 01:16:09,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:09,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 01:16:09,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2025-02-08 01:16:10,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-02-08 01:16:10,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 279 transitions, 3210 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-02-08 01:16:10,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:10,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-02-08 01:16:10,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand