./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.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/safe027_pso.oepc_pso.opt_tso.oepc_tso.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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:22:18,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:22:18,836 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:22:18,843 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:22:18,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:22:18,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:22:18,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:22:18,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:22:18,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:22:18,872 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:22:18,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:22:18,872 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:22:18,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:22:18,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:22:18,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:22:18,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:22:18,875 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:22:18,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:22:18,875 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:22:18,875 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:22:18,875 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:22:18,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:22:18,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:22:18,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:22:18,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:22:18,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:22:18,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:22:18,876 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:22:18,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:22:18,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:22:18,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:22:18,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:22:18,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:22:18,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:22:18,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:22:18,877 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 -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2025-03-08 17:22:19,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:22:19,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:22:19,131 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:22:19,132 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:22:19,132 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:22:19,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-08 17:22:20,372 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195b5f414/8f7657da7717425f8c066fa9d073dc67/FLAG218739cfd [2025-03-08 17:22:21,322 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:22:21,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-08 17:22:21,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195b5f414/8f7657da7717425f8c066fa9d073dc67/FLAG218739cfd [2025-03-08 17:22:21,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/195b5f414/8f7657da7717425f8c066fa9d073dc67 [2025-03-08 17:22:21,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:22:21,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:22:21,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:22:21,362 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:22:21,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:22:21,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb80d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21, skipping insertion in model container [2025-03-08 17:22:21,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:22:21,518 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-08 17:22:21,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:22:21,629 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:22:21,636 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-08 17:22:21,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:22:21,698 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:22:21,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21 WrapperNode [2025-03-08 17:22:21,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:22:21,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:22:21,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:22:21,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:22:21,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,725 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2025-03-08 17:22:21,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:22:21,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:22:21,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:22:21,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:22:21,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,747 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 17:22:21,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,751 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:22:21,755 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:22:21,755 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:22:21,755 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:22:21,755 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (1/1) ... [2025-03-08 17:22:21,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:22:21,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:22:21,785 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 17:22:21,790 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 17:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:22:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:22:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:22:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 17:22:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 17:22:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:22:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:22:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:22:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:22:21,808 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 17:22:21,901 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:22:21,903 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:22:22,027 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:22:22,027 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:22:22,083 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:22:22,084 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:22:22,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:22 BoogieIcfgContainer [2025-03-08 17:22:22,084 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:22:22,086 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:22:22,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:22:22,089 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:22:22,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:22:21" (1/3) ... [2025-03-08 17:22:22,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4b29d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:22:22, skipping insertion in model container [2025-03-08 17:22:22,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:21" (2/3) ... [2025-03-08 17:22:22,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4b29d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:22:22, skipping insertion in model container [2025-03-08 17:22:22,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:22" (3/3) ... [2025-03-08 17:22:22,092 INFO L128 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-08 17:22:22,102 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:22:22,104 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 5 procedures, 45 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-08 17:22:22,104 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:22:22,145 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:22:22,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2025-03-08 17:22:22,210 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2025-03-08 17:22:22,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:22:22,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 79 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-03-08 17:22:22,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2025-03-08 17:22:22,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2025-03-08 17:22:22,224 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:22:22,238 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;@5a0b84b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:22:22,239 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-08 17:22:22,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:22:22,248 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-03-08 17:22:22,248 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:22:22,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:22,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:22,249 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:22,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:22,253 INFO L85 PathProgramCache]: Analyzing trace with hash 9386031, now seen corresponding path program 1 times [2025-03-08 17:22:22,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:22,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065921574] [2025-03-08 17:22:22,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:22,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:22,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:22:22,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:22:22,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:22,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:22,821 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 17:22:22,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:22,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065921574] [2025-03-08 17:22:22,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065921574] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:22,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:22,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181519960] [2025-03-08 17:22:22,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:22,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:22,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:22,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:22,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:22,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-08 17:22:22,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 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 17:22:22,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:22,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-08 17:22:22,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:25,009 INFO L124 PetriNetUnfolderBase]: 28352/38593 cut-off events. [2025-03-08 17:22:25,010 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2025-03-08 17:22:25,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76743 conditions, 38593 events. 28352/38593 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 233194 event pairs, 7367 based on Foata normal form. 900/39486 useless extension candidates. Maximal degree in co-relation 76731. Up to 30566 conditions per place. [2025-03-08 17:22:25,246 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 50 selfloop transitions, 3 changer transitions 59/117 dead transitions. [2025-03-08 17:22:25,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 117 transitions, 479 flow [2025-03-08 17:22:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:22:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:22:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2025-03-08 17:22:25,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2025-03-08 17:22:25,261 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 177 transitions. [2025-03-08 17:22:25,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 117 transitions, 479 flow [2025-03-08 17:22:25,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 117 transitions, 472 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:22:25,269 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 119 flow [2025-03-08 17:22:25,271 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2025-03-08 17:22:25,274 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2025-03-08 17:22:25,274 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 119 flow [2025-03-08 17:22:25,274 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 17:22:25,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:25,274 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 17:22:25,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:22:25,275 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:25,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1377505136, now seen corresponding path program 1 times [2025-03-08 17:22:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:25,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243780324] [2025-03-08 17:22:25,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:25,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:22:25,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:22:25,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:25,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:25,474 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 17:22:25,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243780324] [2025-03-08 17:22:25,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243780324] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:25,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:25,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:25,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527631553] [2025-03-08 17:22:25,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:25,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:25,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:25,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:25,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:25,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-08 17:22:25,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 17:22:25,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:25,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-08 17:22:25,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:27,061 INFO L124 PetriNetUnfolderBase]: 26297/35759 cut-off events. [2025-03-08 17:22:27,061 INFO L125 PetriNetUnfolderBase]: For 15502/15502 co-relation queries the response was YES. [2025-03-08 17:22:27,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83046 conditions, 35759 events. 26297/35759 cut-off events. For 15502/15502 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 208480 event pairs, 3682 based on Foata normal form. 750/36474 useless extension candidates. Maximal degree in co-relation 83031. Up to 26491 conditions per place. [2025-03-08 17:22:27,242 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 50 selfloop transitions, 3 changer transitions 61/119 dead transitions. [2025-03-08 17:22:27,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 119 transitions, 529 flow [2025-03-08 17:22:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:22:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:22:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2025-03-08 17:22:27,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2025-03-08 17:22:27,244 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 119 flow. Second operand 7 states and 178 transitions. [2025-03-08 17:22:27,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 119 transitions, 529 flow [2025-03-08 17:22:27,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 119 transitions, 512 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:27,637 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 129 flow [2025-03-08 17:22:27,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2025-03-08 17:22:27,637 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-03-08 17:22:27,638 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 129 flow [2025-03-08 17:22:27,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 17:22:27,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:27,638 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 17:22:27,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:22:27,638 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:27,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:27,639 INFO L85 PathProgramCache]: Analyzing trace with hash -351253678, now seen corresponding path program 1 times [2025-03-08 17:22:27,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:27,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672417610] [2025-03-08 17:22:27,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:27,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:27,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:22:27,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:22:27,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:27,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:27,790 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 17:22:27,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:27,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672417610] [2025-03-08 17:22:27,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672417610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:27,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:27,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:27,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401821269] [2025-03-08 17:22:27,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:27,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:27,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:27,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:27,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:27,794 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-08 17:22:27,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 129 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 17:22:27,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:27,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-08 17:22:27,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:29,888 INFO L124 PetriNetUnfolderBase]: 29477/39933 cut-off events. [2025-03-08 17:22:29,889 INFO L125 PetriNetUnfolderBase]: For 27596/27596 co-relation queries the response was YES. [2025-03-08 17:22:29,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95932 conditions, 39933 events. 29477/39933 cut-off events. For 27596/27596 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 234081 event pairs, 2965 based on Foata normal form. 875/40800 useless extension candidates. Maximal degree in co-relation 95913. Up to 25063 conditions per place. [2025-03-08 17:22:30,076 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 91 selfloop transitions, 13 changer transitions 114/223 dead transitions. [2025-03-08 17:22:30,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 223 transitions, 1073 flow [2025-03-08 17:22:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 17:22:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-08 17:22:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 337 transitions. [2025-03-08 17:22:30,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.576068376068376 [2025-03-08 17:22:30,078 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 129 flow. Second operand 13 states and 337 transitions. [2025-03-08 17:22:30,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 223 transitions, 1073 flow [2025-03-08 17:22:30,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 223 transitions, 1027 flow, removed 18 selfloop flow, removed 6 redundant places. [2025-03-08 17:22:30,468 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 258 flow [2025-03-08 17:22:30,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=258, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2025-03-08 17:22:30,469 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2025-03-08 17:22:30,469 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 258 flow [2025-03-08 17:22:30,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 17:22:30,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:30,470 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 17:22:30,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:22:30,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:30,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:30,470 INFO L85 PathProgramCache]: Analyzing trace with hash 84238393, now seen corresponding path program 1 times [2025-03-08 17:22:30,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:30,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98374076] [2025-03-08 17:22:30,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:30,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:30,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:22:30,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:22:30,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:30,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:30,567 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 17:22:30,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:30,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98374076] [2025-03-08 17:22:30,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98374076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:30,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:30,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:30,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722974832] [2025-03-08 17:22:30,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:30,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:30,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:30,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:30,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:30,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-08 17:22:30,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:30,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:30,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-08 17:22:30,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:32,243 INFO L124 PetriNetUnfolderBase]: 27316/36987 cut-off events. [2025-03-08 17:22:32,243 INFO L125 PetriNetUnfolderBase]: For 115493/115493 co-relation queries the response was YES. [2025-03-08 17:22:32,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120825 conditions, 36987 events. 27316/36987 cut-off events. For 115493/115493 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 210806 event pairs, 11336 based on Foata normal form. 720/37690 useless extension candidates. Maximal degree in co-relation 120799. Up to 27914 conditions per place. [2025-03-08 17:22:32,594 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 64 selfloop transitions, 6 changer transitions 61/136 dead transitions. [2025-03-08 17:22:32,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 872 flow [2025-03-08 17:22:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:22:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:22:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2025-03-08 17:22:32,595 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2025-03-08 17:22:32,595 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 258 flow. Second operand 7 states and 182 transitions. [2025-03-08 17:22:32,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 872 flow [2025-03-08 17:22:32,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 136 transitions, 773 flow, removed 43 selfloop flow, removed 7 redundant places. [2025-03-08 17:22:32,862 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 245 flow [2025-03-08 17:22:32,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2025-03-08 17:22:32,866 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2025-03-08 17:22:32,866 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 245 flow [2025-03-08 17:22:32,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:32,866 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:32,866 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] [2025-03-08 17:22:32,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:22:32,866 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:32,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2025253167, now seen corresponding path program 1 times [2025-03-08 17:22:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:32,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417764664] [2025-03-08 17:22:32,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:32,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 17:22:32,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:22:32,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:32,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:33,007 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 17:22:33,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:33,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417764664] [2025-03-08 17:22:33,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417764664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:33,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:33,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:33,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703624193] [2025-03-08 17:22:33,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:33,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:22:33,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:33,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:22:33,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:22:33,012 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-08 17:22:33,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 17:22:33,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:33,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-08 17:22:33,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:35,271 INFO L124 PetriNetUnfolderBase]: 35174/47288 cut-off events. [2025-03-08 17:22:35,271 INFO L125 PetriNetUnfolderBase]: For 86084/86084 co-relation queries the response was YES. [2025-03-08 17:22:35,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137154 conditions, 47288 events. 35174/47288 cut-off events. For 86084/86084 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 274950 event pairs, 5778 based on Foata normal form. 625/47894 useless extension candidates. Maximal degree in co-relation 137128. Up to 19636 conditions per place. [2025-03-08 17:22:35,678 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 65 selfloop transitions, 5 changer transitions 78/153 dead transitions. [2025-03-08 17:22:35,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 153 transitions, 919 flow [2025-03-08 17:22:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:22:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:22:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2025-03-08 17:22:35,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5861111111111111 [2025-03-08 17:22:35,679 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 245 flow. Second operand 8 states and 211 transitions. [2025-03-08 17:22:35,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 153 transitions, 919 flow [2025-03-08 17:22:36,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 873 flow, removed 15 selfloop flow, removed 8 redundant places. [2025-03-08 17:22:36,352 INFO L231 Difference]: Finished difference. Result has 72 places, 42 transitions, 196 flow [2025-03-08 17:22:36,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=196, PETRI_PLACES=72, PETRI_TRANSITIONS=42} [2025-03-08 17:22:36,352 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2025-03-08 17:22:36,352 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 42 transitions, 196 flow [2025-03-08 17:22:36,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 17:22:36,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:36,353 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 17:22:36,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:22:36,353 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:36,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash -425810512, now seen corresponding path program 1 times [2025-03-08 17:22:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:36,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688257377] [2025-03-08 17:22:36,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:36,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 17:22:36,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 17:22:36,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:36,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:36,461 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 17:22:36,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:36,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688257377] [2025-03-08 17:22:36,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688257377] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:36,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:36,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:36,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431612487] [2025-03-08 17:22:36,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:36,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:22:36,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:36,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:22:36,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:22:36,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-08 17:22:36,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 42 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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 17:22:36,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:36,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-08 17:22:36,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:38,408 INFO L124 PetriNetUnfolderBase]: 26197/35464 cut-off events. [2025-03-08 17:22:38,408 INFO L125 PetriNetUnfolderBase]: For 63499/63499 co-relation queries the response was YES. [2025-03-08 17:22:38,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103341 conditions, 35464 events. 26197/35464 cut-off events. For 63499/63499 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 193677 event pairs, 3256 based on Foata normal form. 500/35907 useless extension candidates. Maximal degree in co-relation 103315. Up to 15196 conditions per place. [2025-03-08 17:22:38,563 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 59 selfloop transitions, 5 changer transitions 71/140 dead transitions. [2025-03-08 17:22:38,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 140 transitions, 865 flow [2025-03-08 17:22:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:22:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:22:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2025-03-08 17:22:38,564 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2025-03-08 17:22:38,564 INFO L175 Difference]: Start difference. First operand has 72 places, 42 transitions, 196 flow. Second operand 8 states and 201 transitions. [2025-03-08 17:22:38,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 140 transitions, 865 flow [2025-03-08 17:22:38,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 140 transitions, 791 flow, removed 17 selfloop flow, removed 10 redundant places. [2025-03-08 17:22:38,918 INFO L231 Difference]: Finished difference. Result has 71 places, 42 transitions, 191 flow [2025-03-08 17:22:38,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2025-03-08 17:22:38,918 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2025-03-08 17:22:38,918 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 191 flow [2025-03-08 17:22:38,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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 17:22:38,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:38,919 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] [2025-03-08 17:22:38,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:22:38,919 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:38,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:38,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1467293679, now seen corresponding path program 1 times [2025-03-08 17:22:38,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:38,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385739632] [2025-03-08 17:22:38,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:38,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-08 17:22:38,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-08 17:22:38,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:38,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:38,978 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 17:22:38,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385739632] [2025-03-08 17:22:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385739632] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:38,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:38,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:22:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436861826] [2025-03-08 17:22:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:38,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:22:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:38,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:22:38,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:22:38,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-08 17:22:38,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:38,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:38,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-08 17:22:38,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:39,649 INFO L124 PetriNetUnfolderBase]: 12028/17063 cut-off events. [2025-03-08 17:22:39,649 INFO L125 PetriNetUnfolderBase]: For 34361/34361 co-relation queries the response was YES. [2025-03-08 17:22:39,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49956 conditions, 17063 events. 12028/17063 cut-off events. For 34361/34361 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 95686 event pairs, 1366 based on Foata normal form. 625/17682 useless extension candidates. Maximal degree in co-relation 49932. Up to 9621 conditions per place. [2025-03-08 17:22:39,721 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 75 selfloop transitions, 6 changer transitions 1/88 dead transitions. [2025-03-08 17:22:39,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 581 flow [2025-03-08 17:22:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:22:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:22:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2025-03-08 17:22:39,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2025-03-08 17:22:39,722 INFO L175 Difference]: Start difference. First operand has 71 places, 42 transitions, 191 flow. Second operand 4 states and 116 transitions. [2025-03-08 17:22:39,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 581 flow [2025-03-08 17:22:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 539 flow, removed 6 selfloop flow, removed 8 redundant places. [2025-03-08 17:22:39,782 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 209 flow [2025-03-08 17:22:39,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2025-03-08 17:22:39,783 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2025-03-08 17:22:39,783 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 209 flow [2025-03-08 17:22:39,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:39,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:39,783 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] [2025-03-08 17:22:39,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:22:39,783 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:39,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1273706024, now seen corresponding path program 1 times [2025-03-08 17:22:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191664194] [2025-03-08 17:22:39,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:39,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:22:39,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:22:39,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:39,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:39,865 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 17:22:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191664194] [2025-03-08 17:22:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191664194] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:39,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:39,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730861379] [2025-03-08 17:22:39,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:39,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:39,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:39,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:39,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-08 17:22:39,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 209 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) [2025-03-08 17:22:39,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:39,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-08 17:22:39,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:40,415 INFO L124 PetriNetUnfolderBase]: 8838/12664 cut-off events. [2025-03-08 17:22:40,415 INFO L125 PetriNetUnfolderBase]: For 23031/23031 co-relation queries the response was YES. [2025-03-08 17:22:40,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38259 conditions, 12664 events. 8838/12664 cut-off events. For 23031/23031 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 67735 event pairs, 630 based on Foata normal form. 544/13202 useless extension candidates. Maximal degree in co-relation 38239. Up to 5633 conditions per place. [2025-03-08 17:22:40,453 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 92 selfloop transitions, 10 changer transitions 1/109 dead transitions. [2025-03-08 17:22:40,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 712 flow [2025-03-08 17:22:40,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:22:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:22:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2025-03-08 17:22:40,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6577777777777778 [2025-03-08 17:22:40,454 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 209 flow. Second operand 5 states and 148 transitions. [2025-03-08 17:22:40,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 712 flow [2025-03-08 17:22:40,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 701 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-08 17:22:40,458 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 261 flow [2025-03-08 17:22:40,458 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2025-03-08 17:22:40,459 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2025-03-08 17:22:40,459 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 261 flow [2025-03-08 17:22:40,459 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) [2025-03-08 17:22:40,459 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:40,459 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] [2025-03-08 17:22:40,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:22:40,460 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:40,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1998992159, now seen corresponding path program 1 times [2025-03-08 17:22:40,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:40,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866484681] [2025-03-08 17:22:40,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:40,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:40,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:22:40,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:22:40,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:40,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:40,543 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 17:22:40,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:40,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866484681] [2025-03-08 17:22:40,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866484681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:40,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:40,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848257496] [2025-03-08 17:22:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:40,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:40,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:40,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:40,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-08 17:22:40,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 261 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 17:22:40,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:40,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-08 17:22:40,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:40,898 INFO L124 PetriNetUnfolderBase]: 5458/7828 cut-off events. [2025-03-08 17:22:40,898 INFO L125 PetriNetUnfolderBase]: For 17267/17267 co-relation queries the response was YES. [2025-03-08 17:22:40,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25117 conditions, 7828 events. 5458/7828 cut-off events. For 17267/17267 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 38067 event pairs, 438 based on Foata normal form. 328/8150 useless extension candidates. Maximal degree in co-relation 25095. Up to 2376 conditions per place. [2025-03-08 17:22:40,932 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 101 selfloop transitions, 14 changer transitions 1/122 dead transitions. [2025-03-08 17:22:40,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 122 transitions, 844 flow [2025-03-08 17:22:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2025-03-08 17:22:40,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2025-03-08 17:22:40,934 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 261 flow. Second operand 6 states and 174 transitions. [2025-03-08 17:22:40,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 122 transitions, 844 flow [2025-03-08 17:22:40,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 122 transitions, 814 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-08 17:22:40,955 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 311 flow [2025-03-08 17:22:40,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2025-03-08 17:22:40,956 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2025-03-08 17:22:40,957 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 311 flow [2025-03-08 17:22:40,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 17:22:40,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:40,957 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] [2025-03-08 17:22:40,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:22:40,957 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:40,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash 176854295, now seen corresponding path program 1 times [2025-03-08 17:22:40,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:40,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431028365] [2025-03-08 17:22:40,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:40,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:40,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 17:22:40,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 17:22:40,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:40,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:41,066 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 17:22:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:41,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431028365] [2025-03-08 17:22:41,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431028365] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:41,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:41,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:41,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295888371] [2025-03-08 17:22:41,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:41,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:41,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:41,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:41,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:41,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-08 17:22:41,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 17:22:41,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:41,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-08 17:22:41,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:41,599 INFO L124 PetriNetUnfolderBase]: 8162/11534 cut-off events. [2025-03-08 17:22:41,599 INFO L125 PetriNetUnfolderBase]: For 25635/25635 co-relation queries the response was YES. [2025-03-08 17:22:41,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37864 conditions, 11534 events. 8162/11534 cut-off events. For 25635/25635 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 57324 event pairs, 1682 based on Foata normal form. 88/11612 useless extension candidates. Maximal degree in co-relation 37841. Up to 6318 conditions per place. [2025-03-08 17:22:41,735 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 67 selfloop transitions, 2 changer transitions 52/126 dead transitions. [2025-03-08 17:22:41,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 126 transitions, 955 flow [2025-03-08 17:22:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2025-03-08 17:22:41,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2025-03-08 17:22:41,737 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 311 flow. Second operand 6 states and 146 transitions. [2025-03-08 17:22:41,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 126 transitions, 955 flow [2025-03-08 17:22:41,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 126 transitions, 863 flow, removed 18 selfloop flow, removed 5 redundant places. [2025-03-08 17:22:41,771 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 293 flow [2025-03-08 17:22:41,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2025-03-08 17:22:41,771 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2025-03-08 17:22:41,772 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 293 flow [2025-03-08 17:22:41,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 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 17:22:41,772 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:41,772 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] [2025-03-08 17:22:41,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:22:41,772 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:41,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2006535275, now seen corresponding path program 2 times [2025-03-08 17:22:41,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:41,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149706115] [2025-03-08 17:22:41,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:22:41,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:41,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-03-08 17:22:41,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 17:22:41,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:22:41,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:41,863 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 17:22:41,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:41,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149706115] [2025-03-08 17:22:41,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149706115] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:41,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:41,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:41,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404382438] [2025-03-08 17:22:41,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:41,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:22:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:41,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:22:41,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:22:41,865 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-08 17:22:41,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 17:22:41,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:41,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-08 17:22:41,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:42,370 INFO L124 PetriNetUnfolderBase]: 6074/8532 cut-off events. [2025-03-08 17:22:42,370 INFO L125 PetriNetUnfolderBase]: For 18951/18951 co-relation queries the response was YES. [2025-03-08 17:22:42,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26404 conditions, 8532 events. 6074/8532 cut-off events. For 18951/18951 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 41346 event pairs, 506 based on Foata normal form. 208/8734 useless extension candidates. Maximal degree in co-relation 26379. Up to 2720 conditions per place. [2025-03-08 17:22:42,405 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 74 selfloop transitions, 18 changer transitions 19/117 dead transitions. [2025-03-08 17:22:42,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 807 flow [2025-03-08 17:22:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:22:42,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:22:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2025-03-08 17:22:42,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2025-03-08 17:22:42,407 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 293 flow. Second operand 7 states and 178 transitions. [2025-03-08 17:22:42,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 807 flow [2025-03-08 17:22:42,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 117 transitions, 768 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-03-08 17:22:42,456 INFO L231 Difference]: Finished difference. Result has 76 places, 50 transitions, 284 flow [2025-03-08 17:22:42,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=284, PETRI_PLACES=76, PETRI_TRANSITIONS=50} [2025-03-08 17:22:42,457 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2025-03-08 17:22:42,457 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 50 transitions, 284 flow [2025-03-08 17:22:42,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 17:22:42,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:42,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:42,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:22:42,457 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-08 17:22:42,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:42,458 INFO L85 PathProgramCache]: Analyzing trace with hash 281072950, now seen corresponding path program 1 times [2025-03-08 17:22:42,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:42,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656949372] [2025-03-08 17:22:42,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:42,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:42,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-08 17:22:42,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 17:22:42,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:42,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:42,548 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 17:22:42,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:42,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656949372] [2025-03-08 17:22:42,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656949372] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:42,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:42,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:42,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981795422] [2025-03-08 17:22:42,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:42,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:42,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:42,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:42,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-08 17:22:42,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 50 transitions, 284 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) [2025-03-08 17:22:42,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:42,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-08 17:22:42,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:42,851 INFO L124 PetriNetUnfolderBase]: 2760/3957 cut-off events. [2025-03-08 17:22:42,852 INFO L125 PetriNetUnfolderBase]: For 8584/8584 co-relation queries the response was YES. [2025-03-08 17:22:42,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12682 conditions, 3957 events. 2760/3957 cut-off events. For 8584/8584 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16697 event pairs, 540 based on Foata normal form. 16/3972 useless extension candidates. Maximal degree in co-relation 12658. Up to 2448 conditions per place. [2025-03-08 17:22:42,863 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2025-03-08 17:22:42,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 567 flow [2025-03-08 17:22:42,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:42,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-03-08 17:22:42,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2025-03-08 17:22:42,864 INFO L175 Difference]: Start difference. First operand has 76 places, 50 transitions, 284 flow. Second operand 6 states and 114 transitions. [2025-03-08 17:22:42,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 567 flow [2025-03-08 17:22:42,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 409 flow, removed 26 selfloop flow, removed 15 redundant places. [2025-03-08 17:22:42,884 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2025-03-08 17:22:42,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2025-03-08 17:22:42,886 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-03-08 17:22:42,886 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2025-03-08 17:22:42,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2025-03-08 17:22:42,888 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-03-08 17:22:42,888 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-03-08 17:22:42,888 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-08 17:22:42,888 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-08 17:22:42,888 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-08 17:22:42,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:22:42,890 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:42,893 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:22:42,893 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:22:42,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:22:42 BasicIcfg [2025-03-08 17:22:42,898 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:22:42,898 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:22:42,898 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:22:42,898 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:22:42,899 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:22" (3/4) ... [2025-03-08 17:22:42,900 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 17:22:42,903 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-08 17:22:42,904 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-08 17:22:42,904 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-08 17:22:42,904 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P3 [2025-03-08 17:22:42,906 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2025-03-08 17:22:42,907 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-08 17:22:42,907 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-08 17:22:42,907 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-08 17:22:42,966 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:22:42,966 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:22:42,966 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:22:42,967 INFO L158 Benchmark]: Toolchain (without parser) took 21607.87ms. Allocated memory was 167.8MB in the beginning and 8.1GB in the end (delta: 7.9GB). Free memory was 119.9MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2025-03-08 17:22:42,967 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 201.3MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:42,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.84ms. Allocated memory is still 167.8MB. Free memory was 119.9MB in the beginning and 99.5MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 17:22:42,968 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.47ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 97.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:42,969 INFO L158 Benchmark]: Boogie Preprocessor took 28.16ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:42,969 INFO L158 Benchmark]: IcfgBuilder took 329.33ms. Allocated memory is still 167.8MB. Free memory was 96.1MB in the beginning and 75.3MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 17:22:42,969 INFO L158 Benchmark]: TraceAbstraction took 20812.05ms. Allocated memory was 167.8MB in the beginning and 8.1GB in the end (delta: 7.9GB). Free memory was 74.8MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2025-03-08 17:22:42,970 INFO L158 Benchmark]: Witness Printer took 68.14ms. Allocated memory is still 8.1GB. Free memory was 6.2GB in the beginning and 6.2GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:22:42,971 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 201.3MB. Free memory is still 120.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.84ms. Allocated memory is still 167.8MB. Free memory was 119.9MB in the beginning and 99.5MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.47ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 97.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.16ms. Allocated memory is still 167.8MB. Free memory was 97.8MB in the beginning and 96.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 329.33ms. Allocated memory is still 167.8MB. Free memory was 96.1MB in the beginning and 75.3MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20812.05ms. Allocated memory was 167.8MB in the beginning and 8.1GB in the end (delta: 7.9GB). Free memory was 74.8MB in the beginning and 6.2GB in the end (delta: -6.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 68.14ms. Allocated memory is still 8.1GB. Free memory was 6.2GB in the beginning and 6.2GB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 75 locations, 71 edges, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1266 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1262 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2384 IncrementalHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 11 mSDtfsCounter, 2384 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=9, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 275 ConstructedInterpolants, 0 QuantifiedInterpolants, 1039 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-08 17:22:42,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE