./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix026_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix026_pso.opt_rmo.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0c922061e4dc1feb6389a43fa3f654e69e326084cac4d5446a529710663ff29 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:17:37,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:17:37,048 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:17:37,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:17:37,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:17:37,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:17:37,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:17:37,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:17:37,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:17:37,069 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:17:37,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:17:37,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:17:37,069 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:17:37,069 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:17:37,070 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:17:37,070 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:17:37,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:17:37,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:17:37,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:17:37,071 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/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 -> a0c922061e4dc1feb6389a43fa3f654e69e326084cac4d5446a529710663ff29 [2025-03-08 17:17:37,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:17:37,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:17:37,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:17:37,303 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:17:37,303 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:17:37,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix026_pso.opt_rmo.opt.i [2025-03-08 17:17:38,455 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c642eb6/1a8acb23eb29431b8dbde18a00b7ece6/FLAG7aaa97280 [2025-03-08 17:17:38,734 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:17:38,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix026_pso.opt_rmo.opt.i [2025-03-08 17:17:38,748 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c642eb6/1a8acb23eb29431b8dbde18a00b7ece6/FLAG7aaa97280 [2025-03-08 17:17:39,018 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74c642eb6/1a8acb23eb29431b8dbde18a00b7ece6 [2025-03-08 17:17:39,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:17:39,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:17:39,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:17:39,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:17:39,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:17:39,026 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f21cdc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39, skipping insertion in model container [2025-03-08 17:17:39,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:17:39,181 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix026_pso.opt_rmo.opt.i[956,969] [2025-03-08 17:17:39,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:17:39,345 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:17:39,353 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix026_pso.opt_rmo.opt.i[956,969] [2025-03-08 17:17:39,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:17:39,414 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:17:39,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39 WrapperNode [2025-03-08 17:17:39,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:17:39,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:17:39,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:17:39,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:17:39,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,428 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,442 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2025-03-08 17:17:39,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:17:39,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:17:39,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:17:39,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:17:39,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,451 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,465 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]. [2025-03-08 17:17:39,465 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,470 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:17:39,475 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:17:39,475 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:17:39,475 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:17:39,475 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (1/1) ... [2025-03-08 17:17:39,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:17:39,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:17:39,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:17:39,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:17:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:17:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:17:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:17:39,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:17:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:17:39,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:17:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:17:39,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:17:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 17:17:39,528 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 17:17:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:17:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:17:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:17:39,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:17:39,530 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:17:39,633 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:17:39,635 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:17:39,873 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:17:39,873 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:17:40,047 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:17:40,047 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:17:40,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:17:40 BoogieIcfgContainer [2025-03-08 17:17:40,047 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:17:40,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:17:40,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:17:40,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:17:40,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:17:39" (1/3) ... [2025-03-08 17:17:40,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e74b333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:17:40, skipping insertion in model container [2025-03-08 17:17:40,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:17:39" (2/3) ... [2025-03-08 17:17:40,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e74b333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:17:40, skipping insertion in model container [2025-03-08 17:17:40,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:17:40" (3/3) ... [2025-03-08 17:17:40,057 INFO L128 eAbstractionObserver]: Analyzing ICFG mix026_pso.opt_rmo.opt.i [2025-03-08 17:17:40,067 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:17:40,070 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix026_pso.opt_rmo.opt.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-08 17:17:40,070 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:17:40,123 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:17:40,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2025-03-08 17:17:40,178 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2025-03-08 17:17:40,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:17:40,184 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 93 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. [2025-03-08 17:17:40,184 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2025-03-08 17:17:40,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2025-03-08 17:17:40,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:17:40,207 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;@128b0a3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:17:40,207 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-08 17:17:40,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:17:40,217 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2025-03-08 17:17:40,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:17:40,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:40,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:40,218 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:40,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:40,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1869573874, now seen corresponding path program 1 times [2025-03-08 17:17:40,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:40,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68200785] [2025-03-08 17:17:40,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:40,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:40,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 17:17:40,327 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 17:17:40,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:40,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:40,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:40,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68200785] [2025-03-08 17:17:40,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68200785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:40,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:40,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:17:40,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153385799] [2025-03-08 17:17:40,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:40,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:17:40,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:40,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:17:40,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:17:40,611 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:17:40,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-03-08 17:17:40,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:40,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:17:40,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:44,075 INFO L124 PetriNetUnfolderBase]: 40307/53489 cut-off events. [2025-03-08 17:17:44,075 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2025-03-08 17:17:44,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106933 conditions, 53489 events. 40307/53489 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 315404 event pairs, 5087 based on Foata normal form. 1476/54714 useless extension candidates. Maximal degree in co-relation 106921. Up to 45661 conditions per place. [2025-03-08 17:17:44,339 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 57 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2025-03-08 17:17:44,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 273 flow [2025-03-08 17:17:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:17:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:17:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-08 17:17:44,352 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2025-03-08 17:17:44,353 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2025-03-08 17:17:44,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 273 flow [2025-03-08 17:17:44,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:17:44,361 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2025-03-08 17:17:44,362 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} [2025-03-08 17:17:44,366 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2025-03-08 17:17:44,366 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2025-03-08 17:17:44,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2025-03-08 17:17:44,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:44,367 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:44,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:17:44,368 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:44,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:44,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1734648329, now seen corresponding path program 1 times [2025-03-08 17:17:44,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:44,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843961020] [2025-03-08 17:17:44,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:44,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:44,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:17:44,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:17:44,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:44,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:44,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:44,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843961020] [2025-03-08 17:17:44,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843961020] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:44,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:44,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:17:44,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439868808] [2025-03-08 17:17:44,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:44,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:17:44,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:44,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:17:44,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:17:44,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-08 17:17:44,612 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) [2025-03-08 17:17:44,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:44,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-08 17:17:44,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:51,375 INFO L124 PetriNetUnfolderBase]: 96259/128519 cut-off events. [2025-03-08 17:17:51,376 INFO L125 PetriNetUnfolderBase]: For 3080/3080 co-relation queries the response was YES. [2025-03-08 17:17:51,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259361 conditions, 128519 events. 96259/128519 cut-off events. For 3080/3080 co-relation queries the response was YES. Maximal size of possible extension queue 3766. Compared 823339 event pairs, 26263 based on Foata normal form. 0/125991 useless extension candidates. Maximal degree in co-relation 259351. Up to 56001 conditions per place. [2025-03-08 17:17:51,940 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 62 selfloop transitions, 7 changer transitions 131/205 dead transitions. [2025-03-08 17:17:51,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 205 transitions, 840 flow [2025-03-08 17:17:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:17:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:17:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 283 transitions. [2025-03-08 17:17:51,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6417233560090703 [2025-03-08 17:17:51,943 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 283 transitions. [2025-03-08 17:17:51,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 205 transitions, 840 flow [2025-03-08 17:17:51,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 205 transitions, 824 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:17:51,951 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 188 flow [2025-03-08 17:17:51,952 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} [2025-03-08 17:17:51,952 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2025-03-08 17:17:51,952 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 188 flow [2025-03-08 17:17:51,952 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) [2025-03-08 17:17:51,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:51,953 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:51,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:17:51,953 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:51,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -2058575862, now seen corresponding path program 1 times [2025-03-08 17:17:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494960921] [2025-03-08 17:17:51,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:51,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:17:51,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:17:51,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:51,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:52,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:52,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494960921] [2025-03-08 17:17:52,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494960921] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:52,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:52,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:17:52,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498997768] [2025-03-08 17:17:52,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:52,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:17:52,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:52,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:17:52,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:17:52,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-08 17:17:52,123 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) [2025-03-08 17:17:52,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:52,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-08 17:17:52,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:58,035 INFO L124 PetriNetUnfolderBase]: 72191/97681 cut-off events. [2025-03-08 17:17:58,036 INFO L125 PetriNetUnfolderBase]: For 91454/91466 co-relation queries the response was YES. [2025-03-08 17:17:58,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264355 conditions, 97681 events. 72191/97681 cut-off events. For 91454/91466 co-relation queries the response was YES. Maximal size of possible extension queue 2805. Compared 619962 event pairs, 18087 based on Foata normal form. 2480/100116 useless extension candidates. Maximal degree in co-relation 264337. Up to 60721 conditions per place. [2025-03-08 17:17:58,671 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 60 selfloop transitions, 3 changer transitions 89/157 dead transitions. [2025-03-08 17:17:58,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 934 flow [2025-03-08 17:17:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:17:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:17:58,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2025-03-08 17:17:58,673 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5685131195335277 [2025-03-08 17:17:58,673 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 188 flow. Second operand 7 states and 195 transitions. [2025-03-08 17:17:58,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 934 flow [2025-03-08 17:18:00,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 157 transitions, 826 flow, removed 26 selfloop flow, removed 4 redundant places. [2025-03-08 17:18:00,350 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 177 flow [2025-03-08 17:18:00,350 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} [2025-03-08 17:18:00,351 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2025-03-08 17:18:00,351 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 177 flow [2025-03-08 17:18:00,351 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) [2025-03-08 17:18:00,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:00,351 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:18:00,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:18:00,351 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:00,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:00,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2054218014, now seen corresponding path program 1 times [2025-03-08 17:18:00,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:00,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549708000] [2025-03-08 17:18:00,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:00,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:00,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:18:00,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:18:00,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:00,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:00,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:00,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:00,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549708000] [2025-03-08 17:18:00,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549708000] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:00,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:00,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:18:00,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582474705] [2025-03-08 17:18:00,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:00,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:18:00,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:00,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:18:00,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:18:00,474 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:18:00,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2025-03-08 17:18:00,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:00,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:18:00,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:18:04,584 INFO L124 PetriNetUnfolderBase]: 50187/70265 cut-off events. [2025-03-08 17:18:04,584 INFO L125 PetriNetUnfolderBase]: For 58823/58835 co-relation queries the response was YES. [2025-03-08 17:18:04,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179888 conditions, 70265 events. 50187/70265 cut-off events. For 58823/58835 co-relation queries the response was YES. Maximal size of possible extension queue 2093. Compared 466266 event pairs, 6587 based on Foata normal form. 2504/72736 useless extension candidates. Maximal degree in co-relation 179867. Up to 36885 conditions per place. [2025-03-08 17:18:05,142 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 90 selfloop transitions, 6 changer transitions 1/103 dead transitions. [2025-03-08 17:18:05,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 585 flow [2025-03-08 17:18:05,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:18:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:18:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2025-03-08 17:18:05,144 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6479591836734694 [2025-03-08 17:18:05,145 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 177 flow. Second operand 4 states and 127 transitions. [2025-03-08 17:18:05,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 585 flow [2025-03-08 17:18:06,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 559 flow, removed 6 selfloop flow, removed 8 redundant places. [2025-03-08 17:18:06,186 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 201 flow [2025-03-08 17:18:06,186 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=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2025-03-08 17:18:06,187 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2025-03-08 17:18:06,187 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 201 flow [2025-03-08 17:18:06,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2025-03-08 17:18:06,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:06,187 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] [2025-03-08 17:18:06,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:18:06,187 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:06,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:06,188 INFO L85 PathProgramCache]: Analyzing trace with hash -206481784, now seen corresponding path program 1 times [2025-03-08 17:18:06,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:06,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246305146] [2025-03-08 17:18:06,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:06,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 17:18:06,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 17:18:06,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:06,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:06,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:06,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246305146] [2025-03-08 17:18:06,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246305146] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:06,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:06,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:18:06,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870955249] [2025-03-08 17:18:06,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:06,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:18:06,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:06,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:18:06,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:18:06,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:18:06,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:06,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:06,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:18:06,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:18:09,118 INFO L124 PetriNetUnfolderBase]: 34023/47733 cut-off events. [2025-03-08 17:18:09,118 INFO L125 PetriNetUnfolderBase]: For 38153/38165 co-relation queries the response was YES. [2025-03-08 17:18:09,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130248 conditions, 47733 events. 34023/47733 cut-off events. For 38153/38165 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 297494 event pairs, 3479 based on Foata normal form. 2032/49732 useless extension candidates. Maximal degree in co-relation 130231. Up to 17201 conditions per place. [2025-03-08 17:18:09,326 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 117 selfloop transitions, 10 changer transitions 1/134 dead transitions. [2025-03-08 17:18:09,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 134 transitions, 784 flow [2025-03-08 17:18:09,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:18:09,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:18:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2025-03-08 17:18:09,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6693877551020408 [2025-03-08 17:18:09,327 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 201 flow. Second operand 5 states and 164 transitions. [2025-03-08 17:18:09,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 134 transitions, 784 flow [2025-03-08 17:18:09,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 134 transitions, 773 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-08 17:18:09,341 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 253 flow [2025-03-08 17:18:09,341 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2025-03-08 17:18:09,342 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2025-03-08 17:18:09,342 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 253 flow [2025-03-08 17:18:09,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:18:09,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:18:09,342 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] [2025-03-08 17:18:09,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:18:09,342 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:18:09,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:18:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1798736395, now seen corresponding path program 1 times [2025-03-08 17:18:09,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:18:09,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727002532] [2025-03-08 17:18:09,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:18:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:18:09,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 17:18:09,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 17:18:09,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:18:09,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:18:09,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:18:09,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:18:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727002532] [2025-03-08 17:18:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727002532] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:18:09,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:18:09,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:18:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971676518] [2025-03-08 17:18:09,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:18:09,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:18:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:18:09,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:18:09,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:18:09,525 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-08 17:18:09,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2025-03-08 17:18:09,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:18:09,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-08 17:18:09,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand