./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix036.oepc.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/mix036.oepc.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 e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:21:22,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:21:22,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:21:22,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:21:22,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:21:22,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:21:22,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:21:22,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:21:22,515 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:21:22,515 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:21:22,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:21:22,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:21:22,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:21:22,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:21:22,517 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:21:22,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:21:22,517 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:21:22,517 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 -> e3d3e405a2d3cb3ab8b02ed87788ef59412b7b81517118cc37c044f334087868 [2025-02-06 04:21:22,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:21:22,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:21:22,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:21:22,741 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:21:22,741 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:21:22,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2025-02-06 04:21:23,978 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6dfa0132/f21fbfadc9ee49349a2c7bea81da81dc/FLAG6eb671fc0 [2025-02-06 04:21:24,317 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:21:24,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix036.oepc.i [2025-02-06 04:21:24,327 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6dfa0132/f21fbfadc9ee49349a2c7bea81da81dc/FLAG6eb671fc0 [2025-02-06 04:21:24,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e6dfa0132/f21fbfadc9ee49349a2c7bea81da81dc [2025-02-06 04:21:24,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:21:24,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:21:24,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:21:24,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:21:24,352 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:21:24,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbda4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24, skipping insertion in model container [2025-02-06 04:21:24,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,385 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:21:24,508 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/mix036.oepc.i[945,958] [2025-02-06 04:21:24,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:21:24,698 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:21:24,706 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/mix036.oepc.i[945,958] [2025-02-06 04:21:24,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:21:24,775 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:21:24,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24 WrapperNode [2025-02-06 04:21:24,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:21:24,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:21:24,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:21:24,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:21:24,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,819 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2025-02-06 04:21:24,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:21:24,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:21:24,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:21:24,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:21:24,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,847 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 04:21:24,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,852 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:21:24,858 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:21:24,858 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:21:24,858 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:21:24,859 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (1/1) ... [2025-02-06 04:21:24,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:21:24,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:21:24,897 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 04:21:24,905 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 04:21:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:21:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:21:24,920 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 04:21:24,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 04:21:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 04:21:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 04:21:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 04:21:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 04:21:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-02-06 04:21:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-02-06 04:21:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:21:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:21:24,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:21:24,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:21:24,922 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 04:21:25,038 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:21:25,039 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:21:25,314 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:21:25,314 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:21:25,513 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:21:25,514 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:21:25,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:21:25 BoogieIcfgContainer [2025-02-06 04:21:25,514 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:21:25,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:21:25,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:21:25,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:21:25,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:21:24" (1/3) ... [2025-02-06 04:21:25,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f05089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:21:25, skipping insertion in model container [2025-02-06 04:21:25,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:21:24" (2/3) ... [2025-02-06 04:21:25,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f05089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:21:25, skipping insertion in model container [2025-02-06 04:21:25,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:21:25" (3/3) ... [2025-02-06 04:21:25,522 INFO L128 eAbstractionObserver]: Analyzing ICFG mix036.oepc.i [2025-02-06 04:21:25,532 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:21:25,534 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix036.oepc.i that has 5 procedures, 50 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-02-06 04:21:25,534 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:21:25,585 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:21:25,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2025-02-06 04:21:25,633 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2025-02-06 04:21:25,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:21:25,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2025-02-06 04:21:25,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2025-02-06 04:21:25,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2025-02-06 04:21:25,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:21:25,666 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;@66afff86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:21:25,666 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-02-06 04:21:25,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:21:25,668 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2025-02-06 04:21:25,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:21:25,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:21:25,669 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-02-06 04:21:25,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:21:25,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:21:25,673 INFO L85 PathProgramCache]: Analyzing trace with hash 13370092, now seen corresponding path program 1 times [2025-02-06 04:21:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:21:25,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956241143] [2025-02-06 04:21:25,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:21:25,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:21:25,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 04:21:25,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 04:21:25,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:21:25,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:21:26,026 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 04:21:26,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:21:26,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956241143] [2025-02-06 04:21:26,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956241143] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:21:26,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:21:26,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 04:21:26,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170458778] [2025-02-06 04:21:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:21:26,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:21:26,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:21:26,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:21:26,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:21:26,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-06 04:21:26,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 04:21:26,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:21:26,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-06 04:21:26,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:21:30,644 INFO L124 PetriNetUnfolderBase]: 46139/61138 cut-off events. [2025-02-06 04:21:30,645 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2025-02-06 04:21:30,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122142 conditions, 61138 events. 46139/61138 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 1787. Compared 372274 event pairs, 5699 based on Foata normal form. 1692/62572 useless extension candidates. Maximal degree in co-relation 122130. Up to 52391 conditions per place. [2025-02-06 04:21:31,145 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 63 selfloop transitions, 2 changer transitions 2/74 dead transitions. [2025-02-06 04:21:31,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 74 transitions, 303 flow [2025-02-06 04:21:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:21:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:21:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-02-06 04:21:31,160 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6866666666666666 [2025-02-06 04:21:31,162 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 103 transitions. [2025-02-06 04:21:31,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 74 transitions, 303 flow [2025-02-06 04:21:31,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:21:31,172 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2025-02-06 04:21:31,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2025-02-06 04:21:31,178 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2025-02-06 04:21:31,180 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2025-02-06 04:21:31,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 04:21:31,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:21:31,181 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:21:31,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:21:31,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:21:31,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:21:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash 849104405, now seen corresponding path program 1 times [2025-02-06 04:21:31,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:21:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479539531] [2025-02-06 04:21:31,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:21:31,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:21:31,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 04:21:31,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:21:31,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:21:31,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:21:31,561 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 04:21:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:21:31,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479539531] [2025-02-06 04:21:31,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479539531] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:21:31,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:21:31,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:21:31,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513407972] [2025-02-06 04:21:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:21:31,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:21:31,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:21:31,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:21:31,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:21:31,569 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-06 04:21:31,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 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 04:21:31,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:21:31,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-06 04:21:31,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:21:37,461 INFO L124 PetriNetUnfolderBase]: 67379/90255 cut-off events. [2025-02-06 04:21:37,461 INFO L125 PetriNetUnfolderBase]: For 3494/3494 co-relation queries the response was YES. [2025-02-06 04:21:37,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182807 conditions, 90255 events. 67379/90255 cut-off events. For 3494/3494 co-relation queries the response was YES. Maximal size of possible extension queue 2628. Compared 559537 event pairs, 32615 based on Foata normal form. 0/88544 useless extension candidates. Maximal degree in co-relation 182797. Up to 59701 conditions per place. [2025-02-06 04:21:38,211 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 51 selfloop transitions, 5 changer transitions 90/151 dead transitions. [2025-02-06 04:21:38,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 151 transitions, 624 flow [2025-02-06 04:21:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:21:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:21:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2025-02-06 04:21:38,217 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-02-06 04:21:38,217 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 220 transitions. [2025-02-06 04:21:38,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 151 transitions, 624 flow [2025-02-06 04:21:38,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 151 transitions, 608 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 04:21:38,227 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 149 flow [2025-02-06 04:21:38,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2025-02-06 04:21:38,229 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2025-02-06 04:21:38,229 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 149 flow [2025-02-06 04:21:38,229 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 04:21:38,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:21:38,229 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 04:21:38,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:21:38,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:21:38,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:21:38,231 INFO L85 PathProgramCache]: Analyzing trace with hash 212097989, now seen corresponding path program 1 times [2025-02-06 04:21:38,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:21:38,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970978279] [2025-02-06 04:21:38,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:21:38,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:21:38,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:21:38,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:21:38,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:21:38,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:21:38,688 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 04:21:38,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:21:38,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970978279] [2025-02-06 04:21:38,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970978279] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:21:38,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:21:38,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:21:38,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530728341] [2025-02-06 04:21:38,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:21:38,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:21:38,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:21:38,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:21:38,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:21:38,693 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-06 04:21:38,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 04:21:38,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:21:38,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-06 04:21:38,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:21:43,474 INFO L124 PetriNetUnfolderBase]: 49463/66307 cut-off events. [2025-02-06 04:21:43,475 INFO L125 PetriNetUnfolderBase]: For 49254/49254 co-relation queries the response was YES. [2025-02-06 04:21:43,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168762 conditions, 66307 events. 49463/66307 cut-off events. For 49254/49254 co-relation queries the response was YES. Maximal size of possible extension queue 1855. Compared 391841 event pairs, 12727 based on Foata normal form. 1664/67958 useless extension candidates. Maximal degree in co-relation 168747. Up to 37153 conditions per place. [2025-02-06 04:21:44,021 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 57 selfloop transitions, 3 changer transitions 77/142 dead transitions. [2025-02-06 04:21:44,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 142 transitions, 727 flow [2025-02-06 04:21:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:21:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:21:44,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2025-02-06 04:21:44,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5657142857142857 [2025-02-06 04:21:44,025 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 149 flow. Second operand 7 states and 198 transitions. [2025-02-06 04:21:44,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 142 transitions, 727 flow [2025-02-06 04:21:45,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 142 transitions, 714 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-06 04:21:45,049 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 159 flow [2025-02-06 04:21:45,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2025-02-06 04:21:45,050 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2025-02-06 04:21:45,050 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 159 flow [2025-02-06 04:21:45,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 04:21:45,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:21:45,051 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] [2025-02-06 04:21:45,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:21:45,051 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:21:45,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:21:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1179630629, now seen corresponding path program 1 times [2025-02-06 04:21:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:21:45,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757222897] [2025-02-06 04:21:45,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:21:45,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:21:45,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 04:21:45,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 04:21:45,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:21:45,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:21:45,218 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 04:21:45,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:21:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757222897] [2025-02-06 04:21:45,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757222897] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:21:45,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:21:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:21:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327750403] [2025-02-06 04:21:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:21:45,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:21:45,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:21:45,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:21:45,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:21:45,220 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-06 04:21:45,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 159 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 04:21:45,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:21:45,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-06 04:21:45,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:21:48,361 INFO L124 PetriNetUnfolderBase]: 34511/47827 cut-off events. [2025-02-06 04:21:48,361 INFO L125 PetriNetUnfolderBase]: For 46554/46554 co-relation queries the response was YES. [2025-02-06 04:21:48,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123920 conditions, 47827 events. 34511/47827 cut-off events. For 46554/46554 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 298162 event pairs, 4643 based on Foata normal form. 1728/49544 useless extension candidates. Maximal degree in co-relation 123901. Up to 24685 conditions per place. [2025-02-06 04:21:48,647 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 81 selfloop transitions, 6 changer transitions 1/94 dead transitions. [2025-02-06 04:21:48,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 94 transitions, 491 flow [2025-02-06 04:21:48,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:21:48,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:21:48,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2025-02-06 04:21:48,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-02-06 04:21:48,648 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 159 flow. Second operand 4 states and 130 transitions. [2025-02-06 04:21:48,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 94 transitions, 491 flow [2025-02-06 04:21:48,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 94 transitions, 473 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-02-06 04:21:48,882 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 187 flow [2025-02-06 04:21:48,882 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2025-02-06 04:21:48,883 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2025-02-06 04:21:48,883 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 187 flow [2025-02-06 04:21:48,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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 04:21:48,883 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:21:48,883 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] [2025-02-06 04:21:48,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:21:48,884 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:21:48,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:21:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash 796406610, now seen corresponding path program 1 times [2025-02-06 04:21:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:21:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258235084] [2025-02-06 04:21:48,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:21:48,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:21:48,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:21:48,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:21:48,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:21:48,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:21:49,054 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 04:21:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:21:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258235084] [2025-02-06 04:21:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258235084] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:21:49,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:21:49,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:21:49,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972745089] [2025-02-06 04:21:49,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:21:49,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:21:49,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:21:49,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:21:49,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:21:49,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-06 04:21:49,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2025-02-06 04:21:49,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:21:49,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-06 04:21:49,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:21:51,646 INFO L124 PetriNetUnfolderBase]: 23135/32291 cut-off events. [2025-02-06 04:21:51,646 INFO L125 PetriNetUnfolderBase]: For 30388/30388 co-relation queries the response was YES. [2025-02-06 04:21:51,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88642 conditions, 32291 events. 23135/32291 cut-off events. For 30388/30388 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 190867 event pairs, 2675 based on Foata normal form. 1344/33624 useless extension candidates. Maximal degree in co-relation 88625. Up to 11197 conditions per place. [2025-02-06 04:21:51,805 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 104 selfloop transitions, 10 changer transitions 1/121 dead transitions. [2025-02-06 04:21:51,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 121 transitions, 663 flow [2025-02-06 04:21:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:21:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:21:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2025-02-06 04:21:51,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.672 [2025-02-06 04:21:51,807 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 187 flow. Second operand 5 states and 168 transitions. [2025-02-06 04:21:51,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 121 transitions, 663 flow [2025-02-06 04:21:51,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 652 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 04:21:51,813 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 239 flow [2025-02-06 04:21:51,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2025-02-06 04:21:51,814 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2025-02-06 04:21:51,814 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 239 flow [2025-02-06 04:21:51,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2025-02-06 04:21:51,814 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:21:51,815 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] [2025-02-06 04:21:51,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:21:51,815 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:21:51,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:21:51,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1671792375, now seen corresponding path program 1 times [2025-02-06 04:21:51,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:21:51,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438783025] [2025-02-06 04:21:51,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:21:51,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:21:51,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:21:51,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:21:51,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:21:51,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:21:52,530 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 04:21:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:21:52,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438783025] [2025-02-06 04:21:52,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438783025] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:21:52,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:21:52,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:21:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881111515] [2025-02-06 04:21:52,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:21:52,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:21:52,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:21:52,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:21:52,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:21:52,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-06 04:21:52,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 04:21:52,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:21:52,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-06 04:21:52,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:21:56,743 INFO L124 PetriNetUnfolderBase]: 43279/59382 cut-off events. [2025-02-06 04:21:56,744 INFO L125 PetriNetUnfolderBase]: For 70917/70917 co-relation queries the response was YES. [2025-02-06 04:21:56,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174851 conditions, 59382 events. 43279/59382 cut-off events. For 70917/70917 co-relation queries the response was YES. Maximal size of possible extension queue 1475. Compared 363347 event pairs, 12503 based on Foata normal form. 320/59692 useless extension candidates. Maximal degree in co-relation 174832. Up to 25254 conditions per place. [2025-02-06 04:21:57,110 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 129 selfloop transitions, 10 changer transitions 95/239 dead transitions. [2025-02-06 04:21:57,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 239 transitions, 1548 flow [2025-02-06 04:21:57,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 04:21:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 04:21:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2025-02-06 04:21:57,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2025-02-06 04:21:57,112 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 239 flow. Second operand 11 states and 290 transitions. [2025-02-06 04:21:57,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 239 transitions, 1548 flow [2025-02-06 04:21:57,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 239 transitions, 1426 flow, removed 24 selfloop flow, removed 4 redundant places. [2025-02-06 04:21:57,366 INFO L231 Difference]: Finished difference. Result has 79 places, 62 transitions, 281 flow [2025-02-06 04:21:57,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=281, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2025-02-06 04:21:57,366 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2025-02-06 04:21:57,366 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 281 flow [2025-02-06 04:21:57,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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 04:21:57,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:21:57,367 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] [2025-02-06 04:21:57,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:21:57,367 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:21:57,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:21:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1569717289, now seen corresponding path program 2 times [2025-02-06 04:21:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:21:57,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307866369] [2025-02-06 04:21:57,368 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:21:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:21:57,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-02-06 04:21:57,425 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 04:21:57,425 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:21:57,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:21:57,598 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 04:21:57,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:21:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307866369] [2025-02-06 04:21:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307866369] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:21:57,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:21:57,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:21:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407589334] [2025-02-06 04:21:57,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:21:57,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:21:57,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:21:57,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:21:57,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:21:57,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2025-02-06 04:21:57,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 04:21:57,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:21:57,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2025-02-06 04:21:57,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:22:00,342 INFO L124 PetriNetUnfolderBase]: 26781/37249 cut-off events. [2025-02-06 04:22:00,342 INFO L125 PetriNetUnfolderBase]: For 49546/49546 co-relation queries the response was YES. [2025-02-06 04:22:00,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112525 conditions, 37249 events. 26781/37249 cut-off events. For 49546/49546 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 222359 event pairs, 3047 based on Foata normal form. 1452/38692 useless extension candidates. Maximal degree in co-relation 112499. Up to 12380 conditions per place. [2025-02-06 04:22:00,601 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 148 selfloop transitions, 14 changer transitions 6/174 dead transitions. [2025-02-06 04:22:00,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 174 transitions, 1098 flow [2025-02-06 04:22:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:22:00,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:22:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2025-02-06 04:22:00,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.68 [2025-02-06 04:22:00,603 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 281 flow. Second operand 6 states and 204 transitions. [2025-02-06 04:22:00,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 174 transitions, 1098 flow [2025-02-06 04:22:00,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 174 transitions, 1085 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-06 04:22:00,672 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 339 flow [2025-02-06 04:22:00,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2025-02-06 04:22:00,672 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2025-02-06 04:22:00,673 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 339 flow [2025-02-06 04:22:00,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 04:22:00,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:22:00,674 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] [2025-02-06 04:22:00,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:22:00,674 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:22:00,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:22:00,674 INFO L85 PathProgramCache]: Analyzing trace with hash 192378949, now seen corresponding path program 1 times [2025-02-06 04:22:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:22:00,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920426174] [2025-02-06 04:22:00,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:22:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:22:00,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 04:22:00,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 04:22:00,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:22:00,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:22:01,183 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 04:22:01,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:22:01,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920426174] [2025-02-06 04:22:01,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920426174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:22:01,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:22:01,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:22:01,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059474763] [2025-02-06 04:22:01,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:22:01,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:22:01,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:22:01,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:22:01,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:22:01,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2025-02-06 04:22:01,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 04:22:01,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:22:01,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2025-02-06 04:22:01,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand