./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix020.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/pthread-wmm/mix020.opt.i -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 b3c17f675455332f72f7dc385a60a0aa293a9aeb1dd45189023ae89322443476 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:19:58,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:19:58,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:19:58,407 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:19:58,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:19:58,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:19:58,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:19:58,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:19:58,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:19:58,423 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:19:58,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:19:58,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:19:58,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:19:58,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:19:58,424 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:19:58,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:19:58,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:19:58,424 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:19:58,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:19:58,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:19:58,425 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:19:58,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:19:58,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:19:58,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:19:58,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:19:58,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:19:58,427 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 -> b3c17f675455332f72f7dc385a60a0aa293a9aeb1dd45189023ae89322443476 [2025-02-06 04:19:58,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:19:58,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:19:58,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:19:58,650 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:19:58,650 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:19:58,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix020.opt.i [2025-02-06 04:19:59,883 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/943521e8f/a6ffb90e7efe4d0da9bc88d9c78140cf/FLAGedbff69f4 [2025-02-06 04:20:00,236 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:20:00,237 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix020.opt.i [2025-02-06 04:20:00,258 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/943521e8f/a6ffb90e7efe4d0da9bc88d9c78140cf/FLAGedbff69f4 [2025-02-06 04:20:00,469 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/943521e8f/a6ffb90e7efe4d0da9bc88d9c78140cf [2025-02-06 04:20:00,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:20:00,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:20:00,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:20:00,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:20:00,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:20:00,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0ee326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00, skipping insertion in model container [2025-02-06 04:20:00,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,512 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:20:00,650 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/pthread-wmm/mix020.opt.i[944,957] [2025-02-06 04:20:00,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:20:00,762 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:20:00,775 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/pthread-wmm/mix020.opt.i[944,957] [2025-02-06 04:20:00,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:20:00,866 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:20:00,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00 WrapperNode [2025-02-06 04:20:00,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:20:00,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:20:00,868 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:20:00,868 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:20:00,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,907 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2025-02-06 04:20:00,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:20:00,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:20:00,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:20:00,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:20:00,914 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,919 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,935 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 04:20:00,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,940 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:20:00,945 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:20:00,945 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:20:00,945 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:20:00,946 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (1/1) ... [2025-02-06 04:20:00,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:20:00,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:20:00,969 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) [2025-02-06 04:20:00,971 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 [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 04:20:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 04:20:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 04:20:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 04:20:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:20:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:20:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:20:00,987 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:20:01,104 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:20:01,106 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:20:01,423 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:20:01,423 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:20:01,651 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:20:01,651 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:20:01,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:20:01 BoogieIcfgContainer [2025-02-06 04:20:01,652 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:20:01,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:20:01,654 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:20:01,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:20:01,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:20:00" (1/3) ... [2025-02-06 04:20:01,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6618291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:20:01, skipping insertion in model container [2025-02-06 04:20:01,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:20:00" (2/3) ... [2025-02-06 04:20:01,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6618291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:20:01, skipping insertion in model container [2025-02-06 04:20:01,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:20:01" (3/3) ... [2025-02-06 04:20:01,661 INFO L128 eAbstractionObserver]: Analyzing ICFG mix020.opt.i [2025-02-06 04:20:01,672 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:20:01,674 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix020.opt.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 04:20:01,674 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:20:01,721 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:20:01,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2025-02-06 04:20:01,761 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2025-02-06 04:20:01,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:20:01,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2025-02-06 04:20:01,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2025-02-06 04:20:01,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2025-02-06 04:20:01,772 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:20:01,781 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;@32260c11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:20:01,781 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-06 04:20:01,791 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:20:01,791 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-02-06 04:20:01,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:20:01,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:20:01,792 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:20:01,792 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:20:01,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:20:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1272741428, now seen corresponding path program 1 times [2025-02-06 04:20:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:20:01,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711451104] [2025-02-06 04:20:01,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:20:01,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:20:01,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:20:01,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:20:01,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:20:01,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:20:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:20:02,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:20:02,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711451104] [2025-02-06 04:20:02,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711451104] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:20:02,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:20:02,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 04:20:02,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608269238] [2025-02-06 04:20:02,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:20:02,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:20:02,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:20:02,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:20:02,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:20:02,231 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-02-06 04:20:02,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2025-02-06 04:20:02,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:20:02,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-02-06 04:20:02,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:20:05,987 INFO L124 PetriNetUnfolderBase]: 40307/53615 cut-off events. [2025-02-06 04:20:05,987 INFO L125 PetriNetUnfolderBase]: For 230/230 co-relation queries the response was YES. [2025-02-06 04:20:06,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107059 conditions, 53615 events. 40307/53615 cut-off events. For 230/230 co-relation queries the response was YES. Maximal size of possible extension queue 1626. Compared 308179 event pairs, 5315 based on Foata normal form. 1512/54850 useless extension candidates. Maximal degree in co-relation 107047. Up to 45361 conditions per place. [2025-02-06 04:20:06,305 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 54 selfloop transitions, 2 changer transitions 2/65 dead transitions. [2025-02-06 04:20:06,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 258 flow [2025-02-06 04:20:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:20:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:20:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-02-06 04:20:06,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6394557823129252 [2025-02-06 04:20:06,323 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 94 transitions. [2025-02-06 04:20:06,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 258 flow [2025-02-06 04:20:06,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:20:06,334 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2025-02-06 04:20:06,336 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-02-06 04:20:06,340 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2025-02-06 04:20:06,341 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2025-02-06 04:20:06,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2025-02-06 04:20:06,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:20:06,342 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:20:06,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:20:06,343 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:20:06,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:20:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash 285114841, now seen corresponding path program 1 times [2025-02-06 04:20:06,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:20:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317503547] [2025-02-06 04:20:06,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:20:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:20:06,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:20:06,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:20:06,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:20:06,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:20:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:20:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:20:06,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317503547] [2025-02-06 04:20:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317503547] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:20:06,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:20:06,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:20:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969529769] [2025-02-06 04:20:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:20:06,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:20:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:20:06,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:20:06,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:20:06,644 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-02-06 04:20:06,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:20:06,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:20:06,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-02-06 04:20:06,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:20:14,095 INFO L124 PetriNetUnfolderBase]: 96351/128663 cut-off events. [2025-02-06 04:20:14,095 INFO L125 PetriNetUnfolderBase]: For 4176/4176 co-relation queries the response was YES. [2025-02-06 04:20:14,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260789 conditions, 128663 events. 96351/128663 cut-off events. For 4176/4176 co-relation queries the response was YES. Maximal size of possible extension queue 3827. Compared 828726 event pairs, 26005 based on Foata normal form. 0/126097 useless extension candidates. Maximal degree in co-relation 260779. Up to 56277 conditions per place. [2025-02-06 04:20:15,089 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 62 selfloop transitions, 7 changer transitions 131/205 dead transitions. [2025-02-06 04:20:15,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 205 transitions, 842 flow [2025-02-06 04:20:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:20:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:20:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 283 transitions. [2025-02-06 04:20:15,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6417233560090703 [2025-02-06 04:20:15,095 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 283 transitions. [2025-02-06 04:20:15,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 205 transitions, 842 flow [2025-02-06 04:20:15,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 205 transitions, 824 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:20:15,191 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 188 flow [2025-02-06 04:20:15,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=188, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2025-02-06 04:20:15,192 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2025-02-06 04:20:15,192 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 188 flow [2025-02-06 04:20:15,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:20:15,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:20:15,193 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:20:15,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:20:15,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:20:15,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:20:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash -889178366, now seen corresponding path program 1 times [2025-02-06 04:20:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:20:15,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991054209] [2025-02-06 04:20:15,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:20:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:20:15,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:20:15,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:20:15,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:20:15,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:20:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:20:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:20:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991054209] [2025-02-06 04:20:15,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991054209] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:20:15,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:20:15,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:20:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592995279] [2025-02-06 04:20:15,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:20:15,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:20:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:20:15,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:20:15,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:20:15,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-02-06 04:20:15,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:20:15,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:20:15,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-02-06 04:20:15,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:20:21,470 INFO L124 PetriNetUnfolderBase]: 71663/97005 cut-off events. [2025-02-06 04:20:21,471 INFO L125 PetriNetUnfolderBase]: For 98975/98975 co-relation queries the response was YES. [2025-02-06 04:20:21,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266335 conditions, 97005 events. 71663/97005 cut-off events. For 98975/98975 co-relation queries the response was YES. Maximal size of possible extension queue 2752. Compared 610223 event pairs, 18851 based on Foata normal form. 2380/99336 useless extension candidates. Maximal degree in co-relation 266317. Up to 60681 conditions per place. [2025-02-06 04:20:22,295 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 61 selfloop transitions, 3 changer transitions 91/160 dead transitions. [2025-02-06 04:20:22,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 160 transitions, 982 flow [2025-02-06 04:20:22,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:20:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:20:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2025-02-06 04:20:22,297 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685131195335277 [2025-02-06 04:20:22,297 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 188 flow. Second operand 7 states and 195 transitions. [2025-02-06 04:20:22,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 160 transitions, 982 flow [2025-02-06 04:20:23,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 160 transitions, 862 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-02-06 04:20:23,310 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 177 flow [2025-02-06 04:20:23,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=177, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2025-02-06 04:20:23,312 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2025-02-06 04:20:23,312 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 177 flow [2025-02-06 04:20:23,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:20:23,313 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:20:23,313 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:20:23,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:20:23,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:20:23,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:20:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 519540859, now seen corresponding path program 1 times [2025-02-06 04:20:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:20:23,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459188167] [2025-02-06 04:20:23,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:20:23,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:20:23,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:20:23,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:20:23,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:20:23,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:20:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:20:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:20:23,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459188167] [2025-02-06 04:20:23,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459188167] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:20:23,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:20:23,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:20:23,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939049896] [2025-02-06 04:20:23,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:20:23,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:20:23,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:20:23,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:20:23,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:20:23,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-02-06 04:20:23,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:20:23,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:20:23,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-02-06 04:20:23,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:20:29,256 INFO L124 PetriNetUnfolderBase]: 66123/89551 cut-off events. [2025-02-06 04:20:29,256 INFO L125 PetriNetUnfolderBase]: For 75120/75120 co-relation queries the response was YES. [2025-02-06 04:20:29,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235642 conditions, 89551 events. 66123/89551 cut-off events. For 75120/75120 co-relation queries the response was YES. Maximal size of possible extension queue 2429. Compared 567417 event pairs, 18921 based on Foata normal form. 1792/91318 useless extension candidates. Maximal degree in co-relation 235621. Up to 72965 conditions per place. [2025-02-06 04:20:29,921 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 62 selfloop transitions, 5 changer transitions 73/145 dead transitions. [2025-02-06 04:20:29,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 145 transitions, 819 flow [2025-02-06 04:20:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:20:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:20:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2025-02-06 04:20:29,923 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5481049562682215 [2025-02-06 04:20:29,923 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 177 flow. Second operand 7 states and 188 transitions. [2025-02-06 04:20:29,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 145 transitions, 819 flow [2025-02-06 04:20:34,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 145 transitions, 789 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-02-06 04:20:34,344 INFO L231 Difference]: Finished difference. Result has 66 places, 50 transitions, 214 flow [2025-02-06 04:20:34,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=66, PETRI_TRANSITIONS=50} [2025-02-06 04:20:34,345 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2025-02-06 04:20:34,346 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 50 transitions, 214 flow [2025-02-06 04:20:34,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:20:34,346 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:20:34,346 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] [2025-02-06 04:20:34,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:20:34,346 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:20:34,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:20:34,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1621731782, now seen corresponding path program 1 times [2025-02-06 04:20:34,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:20:34,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148437564] [2025-02-06 04:20:34,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:20:34,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:20:34,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:20:34,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:20:34,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:20:34,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:20:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:20:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:20:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148437564] [2025-02-06 04:20:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148437564] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:20:34,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:20:34,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:20:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314211228] [2025-02-06 04:20:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:20:34,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:20:34,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:20:34,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:20:34,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:20:34,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-02-06 04:20:34,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 50 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-02-06 04:20:34,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:20:34,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-02-06 04:20:34,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand