./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:22:28,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:22:28,460 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:22:28,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:22:28,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:22:28,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:22:28,487 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:22:28,487 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:22:28,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:22:28,488 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:22:28,488 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:22:28,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:22:28,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:22:28,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:22:28,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:22:28,489 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:22:28,490 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:22:28,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:22:28,490 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:22:28,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:22:28,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:22:28,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:22:28,491 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:22:28,491 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:22:28,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:22:28,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:22:28,491 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 -> 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 [2025-03-08 17:22:28,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:22:28,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:22:28,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:22:28,732 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:22:28,732 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:22:28,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2025-03-08 17:22:29,852 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb3a7fdc/3a747aa052c048fa821ec2bcfa7f81a2/FLAG345613dc2 [2025-03-08 17:22:30,145 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:22:30,146 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2025-03-08 17:22:30,158 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb3a7fdc/3a747aa052c048fa821ec2bcfa7f81a2/FLAG345613dc2 [2025-03-08 17:22:30,428 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb3a7fdc/3a747aa052c048fa821ec2bcfa7f81a2 [2025-03-08 17:22:30,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:22:30,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:22:30,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:22:30,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:22:30,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:22:30,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a76d434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30, skipping insertion in model container [2025-03-08 17:22:30,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:22:30,571 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/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2025-03-08 17:22:30,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:22:30,676 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:22:30,686 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/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2025-03-08 17:22:30,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:22:30,761 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:22:30,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30 WrapperNode [2025-03-08 17:22:30,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:22:30,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:22:30,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:22:30,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:22:30,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,806 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 132 [2025-03-08 17:22:30,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:22:30,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:22:30,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:22:30,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:22:30,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,834 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 17:22:30,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,840 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,842 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:22:30,844 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:22:30,845 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:22:30,845 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:22:30,845 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (1/1) ... [2025-03-08 17:22:30,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:22:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:22:30,874 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 17:22:30,878 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 17:22:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:22:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:22:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:22:30,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:22:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:22:30,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:22:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:22:30,893 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:22:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:22:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:22:30,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:22:30,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:22:30,894 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 17:22:30,985 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:22:30,986 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:22:31,198 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:22:31,198 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:22:31,353 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:22:31,353 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:22:31,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:31 BoogieIcfgContainer [2025-03-08 17:22:31,354 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:22:31,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:22:31,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:22:31,359 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:22:31,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:22:30" (1/3) ... [2025-03-08 17:22:31,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619c7f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:22:31, skipping insertion in model container [2025-03-08 17:22:31,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:30" (2/3) ... [2025-03-08 17:22:31,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619c7f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:22:31, skipping insertion in model container [2025-03-08 17:22:31,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:31" (3/3) ... [2025-03-08 17:22:31,362 INFO L128 eAbstractionObserver]: Analyzing ICFG safe030_power.opt_pso.opt_rmo.opt.i [2025-03-08 17:22:31,373 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:22:31,375 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe030_power.opt_pso.opt_rmo.opt.i that has 4 procedures, 39 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-08 17:22:31,375 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:22:31,418 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:22:31,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2025-03-08 17:22:31,470 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2025-03-08 17:22:31,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:22:31,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2025-03-08 17:22:31,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2025-03-08 17:22:31,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 36 transitions, 81 flow [2025-03-08 17:22:31,489 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:22:31,498 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;@2a772548, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:22:31,499 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-08 17:22:31,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:22:31,505 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-08 17:22:31,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:22:31,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:31,506 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:31,507 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:31,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:31,511 INFO L85 PathProgramCache]: Analyzing trace with hash 958153833, now seen corresponding path program 1 times [2025-03-08 17:22:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:31,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873534376] [2025-03-08 17:22:31,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:31,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:31,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 17:22:31,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 17:22:31,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:31,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:31,911 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 17:22:31,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:31,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873534376] [2025-03-08 17:22:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873534376] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:31,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:31,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:22:31,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631838785] [2025-03-08 17:22:31,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:31,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:22:31,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:31,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:22:31,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:22:31,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-08 17:22:31,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 17:22:31,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:31,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-08 17:22:31,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:32,627 INFO L124 PetriNetUnfolderBase]: 4235/6167 cut-off events. [2025-03-08 17:22:32,627 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-03-08 17:22:32,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12306 conditions, 6167 events. 4235/6167 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 32450 event pairs, 575 based on Foata normal form. 216/6340 useless extension candidates. Maximal degree in co-relation 12295. Up to 5101 conditions per place. [2025-03-08 17:22:32,670 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 41 selfloop transitions, 2 changer transitions 2/51 dead transitions. [2025-03-08 17:22:32,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 201 flow [2025-03-08 17:22:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:22:32,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:22:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2025-03-08 17:22:32,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2025-03-08 17:22:32,683 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 81 flow. Second operand 3 states and 75 transitions. [2025-03-08 17:22:32,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 201 flow [2025-03-08 17:22:32,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:32,690 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 76 flow [2025-03-08 17:22:32,693 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2025-03-08 17:22:32,696 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2025-03-08 17:22:32,696 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 76 flow [2025-03-08 17:22:32,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 17:22:32,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:32,696 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:32,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:22:32,696 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:32,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash 565022204, now seen corresponding path program 1 times [2025-03-08 17:22:32,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:32,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439868808] [2025-03-08 17:22:32,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:32,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:32,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 17:22:32,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:22:32,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:32,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:33,034 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 17:22:33,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:33,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439868808] [2025-03-08 17:22:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439868808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:33,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:33,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642865278] [2025-03-08 17:22:33,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:33,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:33,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:33,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:33,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:33,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 17:22:33,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:33,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:33,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:33,849 INFO L124 PetriNetUnfolderBase]: 6055/8892 cut-off events. [2025-03-08 17:22:33,849 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2025-03-08 17:22:33,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18074 conditions, 8892 events. 6055/8892 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 50900 event pairs, 1501 based on Foata normal form. 0/8687 useless extension candidates. Maximal degree in co-relation 18064. Up to 5757 conditions per place. [2025-03-08 17:22:33,884 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 41 selfloop transitions, 3 changer transitions 67/115 dead transitions. [2025-03-08 17:22:33,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 115 transitions, 478 flow [2025-03-08 17:22:33,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:22:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:22:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2025-03-08 17:22:33,888 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-03-08 17:22:33,888 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 76 flow. Second operand 8 states and 169 transitions. [2025-03-08 17:22:33,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 115 transitions, 478 flow [2025-03-08 17:22:33,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 115 transitions, 462 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:22:33,893 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 105 flow [2025-03-08 17:22:33,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=105, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2025-03-08 17:22:33,894 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2025-03-08 17:22:33,894 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 105 flow [2025-03-08 17:22:33,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 17:22:33,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:33,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:33,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:22:33,895 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:33,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2125991075, now seen corresponding path program 1 times [2025-03-08 17:22:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:33,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519708470] [2025-03-08 17:22:33,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:33,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:33,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:22:33,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:22:33,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:33,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:34,564 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 17:22:34,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:34,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519708470] [2025-03-08 17:22:34,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519708470] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:34,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:34,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:34,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815637221] [2025-03-08 17:22:34,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:34,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:34,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:34,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:34,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:34,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 17:22:34,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:34,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:34,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:35,788 INFO L124 PetriNetUnfolderBase]: 8087/11898 cut-off events. [2025-03-08 17:22:35,789 INFO L125 PetriNetUnfolderBase]: For 6628/6628 co-relation queries the response was YES. [2025-03-08 17:22:35,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28654 conditions, 11898 events. 8087/11898 cut-off events. For 6628/6628 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 70447 event pairs, 590 based on Foata normal form. 350/12248 useless extension candidates. Maximal degree in co-relation 28639. Up to 5927 conditions per place. [2025-03-08 17:22:35,854 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 59 selfloop transitions, 12 changer transitions 81/156 dead transitions. [2025-03-08 17:22:35,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 156 transitions, 785 flow [2025-03-08 17:22:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:22:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:22:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 221 transitions. [2025-03-08 17:22:35,857 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2025-03-08 17:22:35,857 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 105 flow. Second operand 10 states and 221 transitions. [2025-03-08 17:22:35,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 156 transitions, 785 flow [2025-03-08 17:22:35,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 156 transitions, 766 flow, removed 7 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:35,929 INFO L231 Difference]: Finished difference. Result has 61 places, 45 transitions, 236 flow [2025-03-08 17:22:35,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=236, PETRI_PLACES=61, PETRI_TRANSITIONS=45} [2025-03-08 17:22:35,930 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2025-03-08 17:22:35,930 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 45 transitions, 236 flow [2025-03-08 17:22:35,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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 17:22:35,930 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:35,931 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:35,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:22:35,931 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:35,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:35,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2143398188, now seen corresponding path program 1 times [2025-03-08 17:22:35,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:35,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749650331] [2025-03-08 17:22:35,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:35,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:35,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:22:35,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:22:35,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:35,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:36,335 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 17:22:36,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749650331] [2025-03-08 17:22:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749650331] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:36,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:36,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:36,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995953948] [2025-03-08 17:22:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:36,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:36,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:36,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:36,341 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:36,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 45 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 17:22:36,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:36,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:36,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:37,524 INFO L124 PetriNetUnfolderBase]: 9842/14497 cut-off events. [2025-03-08 17:22:37,524 INFO L125 PetriNetUnfolderBase]: For 30142/30142 co-relation queries the response was YES. [2025-03-08 17:22:37,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47256 conditions, 14497 events. 9842/14497 cut-off events. For 30142/30142 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 87532 event pairs, 2152 based on Foata normal form. 308/14805 useless extension candidates. Maximal degree in co-relation 47233. Up to 6613 conditions per place. [2025-03-08 17:22:37,597 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 68 selfloop transitions, 21 changer transitions 76/169 dead transitions. [2025-03-08 17:22:37,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 169 transitions, 1130 flow [2025-03-08 17:22:37,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:22:37,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:22:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2025-03-08 17:22:37,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2025-03-08 17:22:37,602 INFO L175 Difference]: Start difference. First operand has 61 places, 45 transitions, 236 flow. Second operand 10 states and 216 transitions. [2025-03-08 17:22:37,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 169 transitions, 1130 flow [2025-03-08 17:22:37,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 169 transitions, 1086 flow, removed 22 selfloop flow, removed 4 redundant places. [2025-03-08 17:22:37,666 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 446 flow [2025-03-08 17:22:37,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=446, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2025-03-08 17:22:37,667 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2025-03-08 17:22:37,667 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 446 flow [2025-03-08 17:22:37,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 17:22:37,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:37,667 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 17:22:37,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:22:37,667 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:37,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash -373192364, now seen corresponding path program 1 times [2025-03-08 17:22:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:37,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727818104] [2025-03-08 17:22:37,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:37,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:37,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:22:37,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:22:37,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:37,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:38,140 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 17:22:38,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:38,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727818104] [2025-03-08 17:22:38,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727818104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:38,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:38,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:38,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481490019] [2025-03-08 17:22:38,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:38,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:38,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:38,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:38,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:38,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:38,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 17:22:38,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:38,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:38,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:39,315 INFO L124 PetriNetUnfolderBase]: 9888/14908 cut-off events. [2025-03-08 17:22:39,316 INFO L125 PetriNetUnfolderBase]: For 53703/53705 co-relation queries the response was YES. [2025-03-08 17:22:39,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55159 conditions, 14908 events. 9888/14908 cut-off events. For 53703/53705 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 91226 event pairs, 3259 based on Foata normal form. 389/15296 useless extension candidates. Maximal degree in co-relation 55129. Up to 11977 conditions per place. [2025-03-08 17:22:39,400 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 68 selfloop transitions, 5 changer transitions 60/137 dead transitions. [2025-03-08 17:22:39,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 137 transitions, 1250 flow [2025-03-08 17:22:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:22:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:22:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2025-03-08 17:22:39,404 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908 [2025-03-08 17:22:39,404 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 446 flow. Second operand 7 states and 134 transitions. [2025-03-08 17:22:39,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 137 transitions, 1250 flow [2025-03-08 17:22:39,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 137 transitions, 1222 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-03-08 17:22:39,528 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 495 flow [2025-03-08 17:22:39,529 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2025-03-08 17:22:39,530 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2025-03-08 17:22:39,531 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 495 flow [2025-03-08 17:22:39,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 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 17:22:39,531 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:39,532 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 17:22:39,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:22:39,532 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:39,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2077802383, now seen corresponding path program 1 times [2025-03-08 17:22:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:39,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407860778] [2025-03-08 17:22:39,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:39,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:22:39,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:22:39,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:39,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:39,783 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 17:22:39,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:39,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407860778] [2025-03-08 17:22:39,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407860778] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:39,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:39,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960239696] [2025-03-08 17:22:39,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:39,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:39,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:39,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:39,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:39,789 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:39,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 495 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 17:22:39,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:39,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:39,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:40,909 INFO L124 PetriNetUnfolderBase]: 9621/14300 cut-off events. [2025-03-08 17:22:40,909 INFO L125 PetriNetUnfolderBase]: For 56599/56605 co-relation queries the response was YES. [2025-03-08 17:22:40,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56893 conditions, 14300 events. 9621/14300 cut-off events. For 56599/56605 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 84875 event pairs, 1434 based on Foata normal form. 323/14622 useless extension candidates. Maximal degree in co-relation 56860. Up to 10713 conditions per place. [2025-03-08 17:22:40,963 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 81 selfloop transitions, 10 changer transitions 63/158 dead transitions. [2025-03-08 17:22:40,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 158 transitions, 1499 flow [2025-03-08 17:22:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:22:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:22:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2025-03-08 17:22:40,964 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5032051282051282 [2025-03-08 17:22:40,964 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 495 flow. Second operand 8 states and 157 transitions. [2025-03-08 17:22:40,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 158 transitions, 1499 flow [2025-03-08 17:22:41,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 158 transitions, 1474 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:41,029 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 550 flow [2025-03-08 17:22:41,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=550, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2025-03-08 17:22:41,030 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2025-03-08 17:22:41,030 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 550 flow [2025-03-08 17:22:41,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 17:22:41,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:41,030 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 17:22:41,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:22:41,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:41,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:41,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1579101043, now seen corresponding path program 2 times [2025-03-08 17:22:41,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:41,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795309609] [2025-03-08 17:22:41,031 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:22:41,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:41,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:22:41,051 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:22:41,052 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:22:41,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:41,316 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 17:22:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:41,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795309609] [2025-03-08 17:22:41,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795309609] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:41,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:41,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187923873] [2025-03-08 17:22:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:41,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:22:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:41,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:22:41,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:22:41,320 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:41,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 550 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 17:22:41,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:41,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:41,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:42,697 INFO L124 PetriNetUnfolderBase]: 9237/13955 cut-off events. [2025-03-08 17:22:42,698 INFO L125 PetriNetUnfolderBase]: For 69138/69148 co-relation queries the response was YES. [2025-03-08 17:22:42,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57184 conditions, 13955 events. 9237/13955 cut-off events. For 69138/69148 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 83880 event pairs, 1946 based on Foata normal form. 327/14281 useless extension candidates. Maximal degree in co-relation 57147. Up to 10537 conditions per place. [2025-03-08 17:22:42,803 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 80 selfloop transitions, 11 changer transitions 75/170 dead transitions. [2025-03-08 17:22:42,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 170 transitions, 1702 flow [2025-03-08 17:22:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:22:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:22:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2025-03-08 17:22:42,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-03-08 17:22:42,805 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 550 flow. Second operand 10 states and 182 transitions. [2025-03-08 17:22:42,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 170 transitions, 1702 flow [2025-03-08 17:22:42,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 170 transitions, 1643 flow, removed 21 selfloop flow, removed 5 redundant places. [2025-03-08 17:22:43,001 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 601 flow [2025-03-08 17:22:43,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=601, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2025-03-08 17:22:43,002 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 37 predicate places. [2025-03-08 17:22:43,002 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 601 flow [2025-03-08 17:22:43,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 17:22:43,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:43,002 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 17:22:43,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:22:43,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:43,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash -202918007, now seen corresponding path program 1 times [2025-03-08 17:22:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:43,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369807732] [2025-03-08 17:22:43,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:43,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:22:43,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:22:43,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:43,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:43,148 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 17:22:43,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369807732] [2025-03-08 17:22:43,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369807732] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:43,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:43,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:43,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415288994] [2025-03-08 17:22:43,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:43,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:43,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:43,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:43,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:43,152 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:43,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 601 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 17:22:43,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:43,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:43,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:44,766 INFO L124 PetriNetUnfolderBase]: 14073/21090 cut-off events. [2025-03-08 17:22:44,766 INFO L125 PetriNetUnfolderBase]: For 128952/128966 co-relation queries the response was YES. [2025-03-08 17:22:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86987 conditions, 21090 events. 14073/21090 cut-off events. For 128952/128966 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 135623 event pairs, 5506 based on Foata normal form. 448/21537 useless extension candidates. Maximal degree in co-relation 86946. Up to 9910 conditions per place. [2025-03-08 17:22:44,880 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 73 selfloop transitions, 8 changer transitions 63/148 dead transitions. [2025-03-08 17:22:44,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 148 transitions, 1529 flow [2025-03-08 17:22:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:22:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:22:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2025-03-08 17:22:44,881 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-08 17:22:44,881 INFO L175 Difference]: Start difference. First operand has 82 places, 65 transitions, 601 flow. Second operand 7 states and 147 transitions. [2025-03-08 17:22:44,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 148 transitions, 1529 flow [2025-03-08 17:22:45,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 148 transitions, 1473 flow, removed 24 selfloop flow, removed 5 redundant places. [2025-03-08 17:22:45,080 INFO L231 Difference]: Finished difference. Result has 82 places, 63 transitions, 575 flow [2025-03-08 17:22:45,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=82, PETRI_TRANSITIONS=63} [2025-03-08 17:22:45,080 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 37 predicate places. [2025-03-08 17:22:45,081 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 63 transitions, 575 flow [2025-03-08 17:22:45,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 17:22:45,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:45,081 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 17:22:45,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:22:45,081 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:45,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1737864551, now seen corresponding path program 1 times [2025-03-08 17:22:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:45,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370014707] [2025-03-08 17:22:45,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:45,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 17:22:45,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:22:45,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:45,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:45,489 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 17:22:45,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:45,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370014707] [2025-03-08 17:22:45,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370014707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:45,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:45,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:22:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062028671] [2025-03-08 17:22:45,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:45,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 17:22:45,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:45,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 17:22:45,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:22:45,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:45,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 63 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 17:22:45,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:45,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:45,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:46,746 INFO L124 PetriNetUnfolderBase]: 12689/19308 cut-off events. [2025-03-08 17:22:46,747 INFO L125 PetriNetUnfolderBase]: For 112225/112239 co-relation queries the response was YES. [2025-03-08 17:22:46,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77595 conditions, 19308 events. 12689/19308 cut-off events. For 112225/112239 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 123475 event pairs, 3869 based on Foata normal form. 222/19529 useless extension candidates. Maximal degree in co-relation 77553. Up to 16536 conditions per place. [2025-03-08 17:22:46,893 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 77 selfloop transitions, 8 changer transitions 51/140 dead transitions. [2025-03-08 17:22:46,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 140 transitions, 1367 flow [2025-03-08 17:22:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:22:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:22:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2025-03-08 17:22:46,894 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4775641025641026 [2025-03-08 17:22:46,894 INFO L175 Difference]: Start difference. First operand has 82 places, 63 transitions, 575 flow. Second operand 8 states and 149 transitions. [2025-03-08 17:22:46,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 140 transitions, 1367 flow [2025-03-08 17:22:47,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 1307 flow, removed 23 selfloop flow, removed 5 redundant places. [2025-03-08 17:22:47,108 INFO L231 Difference]: Finished difference. Result has 85 places, 62 transitions, 559 flow [2025-03-08 17:22:47,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=559, PETRI_PLACES=85, PETRI_TRANSITIONS=62} [2025-03-08 17:22:47,109 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2025-03-08 17:22:47,109 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 62 transitions, 559 flow [2025-03-08 17:22:47,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 17:22:47,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:47,109 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 17:22:47,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:22:47,109 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:47,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:47,109 INFO L85 PathProgramCache]: Analyzing trace with hash 150943776, now seen corresponding path program 1 times [2025-03-08 17:22:47,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:47,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573225099] [2025-03-08 17:22:47,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:47,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 17:22:47,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:22:47,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:47,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:47,492 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 17:22:47,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:47,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573225099] [2025-03-08 17:22:47,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573225099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:47,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:47,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:22:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599063051] [2025-03-08 17:22:47,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:47,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:22:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:47,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:22:47,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:22:47,497 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:47,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 62 transitions, 559 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 17:22:47,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:47,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:47,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:48,970 INFO L124 PetriNetUnfolderBase]: 14694/22249 cut-off events. [2025-03-08 17:22:48,971 INFO L125 PetriNetUnfolderBase]: For 139933/139947 co-relation queries the response was YES. [2025-03-08 17:22:49,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91334 conditions, 22249 events. 14694/22249 cut-off events. For 139933/139947 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 144678 event pairs, 5053 based on Foata normal form. 588/22836 useless extension candidates. Maximal degree in co-relation 91290. Up to 16090 conditions per place. [2025-03-08 17:22:49,099 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 94 selfloop transitions, 20 changer transitions 77/195 dead transitions. [2025-03-08 17:22:49,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 195 transitions, 2089 flow [2025-03-08 17:22:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:22:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:22:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2025-03-08 17:22:49,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2025-03-08 17:22:49,100 INFO L175 Difference]: Start difference. First operand has 85 places, 62 transitions, 559 flow. Second operand 9 states and 176 transitions. [2025-03-08 17:22:49,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 195 transitions, 2089 flow [2025-03-08 17:22:49,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 195 transitions, 2055 flow, removed 11 selfloop flow, removed 6 redundant places. [2025-03-08 17:22:49,366 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 757 flow [2025-03-08 17:22:49,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=757, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2025-03-08 17:22:49,367 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 44 predicate places. [2025-03-08 17:22:49,367 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 757 flow [2025-03-08 17:22:49,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 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 17:22:49,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:49,367 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:49,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:22:49,367 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:49,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 236306459, now seen corresponding path program 1 times [2025-03-08 17:22:49,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:49,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606643083] [2025-03-08 17:22:49,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:49,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:49,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 17:22:49,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 17:22:49,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:49,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:49,446 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 17:22:49,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:49,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606643083] [2025-03-08 17:22:49,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606643083] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:49,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:49,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:22:49,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214631596] [2025-03-08 17:22:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:49,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:22:49,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:49,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:22:49,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:22:49,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-08 17:22:49,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 17:22:49,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:49,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-08 17:22:49,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:50,414 INFO L124 PetriNetUnfolderBase]: 10018/15856 cut-off events. [2025-03-08 17:22:50,414 INFO L125 PetriNetUnfolderBase]: For 106163/106177 co-relation queries the response was YES. [2025-03-08 17:22:50,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65730 conditions, 15856 events. 10018/15856 cut-off events. For 106163/106177 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 107137 event pairs, 1596 based on Foata normal form. 844/16700 useless extension candidates. Maximal degree in co-relation 65684. Up to 8005 conditions per place. [2025-03-08 17:22:50,530 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 126 selfloop transitions, 5 changer transitions 21/157 dead transitions. [2025-03-08 17:22:50,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 1979 flow [2025-03-08 17:22:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:22:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:22:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-03-08 17:22:50,531 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2025-03-08 17:22:50,531 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 757 flow. Second operand 4 states and 98 transitions. [2025-03-08 17:22:50,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 1979 flow [2025-03-08 17:22:50,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 157 transitions, 1874 flow, removed 47 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:50,664 INFO L231 Difference]: Finished difference. Result has 87 places, 74 transitions, 720 flow [2025-03-08 17:22:50,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=720, PETRI_PLACES=87, PETRI_TRANSITIONS=74} [2025-03-08 17:22:50,664 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2025-03-08 17:22:50,664 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 74 transitions, 720 flow [2025-03-08 17:22:50,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 17:22:50,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:50,665 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:50,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:22:50,665 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:50,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1305219070, now seen corresponding path program 1 times [2025-03-08 17:22:50,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:50,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30898236] [2025-03-08 17:22:50,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:50,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:50,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 17:22:50,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 17:22:50,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:50,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:50,768 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 17:22:50,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30898236] [2025-03-08 17:22:50,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30898236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:50,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:50,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:50,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003371995] [2025-03-08 17:22:50,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:50,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:50,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:50,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:50,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:50,769 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-08 17:22:50,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 74 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 17:22:50,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:50,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-08 17:22:50,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:51,425 INFO L124 PetriNetUnfolderBase]: 6135/9701 cut-off events. [2025-03-08 17:22:51,425 INFO L125 PetriNetUnfolderBase]: For 55718/55732 co-relation queries the response was YES. [2025-03-08 17:22:51,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40130 conditions, 9701 events. 6135/9701 cut-off events. For 55718/55732 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 60187 event pairs, 669 based on Foata normal form. 656/10357 useless extension candidates. Maximal degree in co-relation 40083. Up to 3168 conditions per place. [2025-03-08 17:22:51,469 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 113 selfloop transitions, 8 changer transitions 30/156 dead transitions. [2025-03-08 17:22:51,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 1850 flow [2025-03-08 17:22:51,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:22:51,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:22:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-03-08 17:22:51,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2025-03-08 17:22:51,470 INFO L175 Difference]: Start difference. First operand has 87 places, 74 transitions, 720 flow. Second operand 5 states and 125 transitions. [2025-03-08 17:22:51,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 156 transitions, 1850 flow [2025-03-08 17:22:51,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 156 transitions, 1764 flow, removed 23 selfloop flow, removed 8 redundant places. [2025-03-08 17:22:51,526 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 604 flow [2025-03-08 17:22:51,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=604, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2025-03-08 17:22:51,526 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2025-03-08 17:22:51,526 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 604 flow [2025-03-08 17:22:51,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 17:22:51,527 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:51,527 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 17:22:51,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:22:51,527 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash 834193118, now seen corresponding path program 1 times [2025-03-08 17:22:51,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:51,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659237905] [2025-03-08 17:22:51,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:51,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:22:51,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:22:51,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:51,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:51,976 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 17:22:51,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659237905] [2025-03-08 17:22:51,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659237905] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:51,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:51,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:22:51,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53512813] [2025-03-08 17:22:51,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:51,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:22:51,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:51,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:22:51,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:22:51,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:51,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 604 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 17:22:51,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:51,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:51,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:52,621 INFO L124 PetriNetUnfolderBase]: 4247/6845 cut-off events. [2025-03-08 17:22:52,621 INFO L125 PetriNetUnfolderBase]: For 25533/25543 co-relation queries the response was YES. [2025-03-08 17:22:52,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27503 conditions, 6845 events. 4247/6845 cut-off events. For 25533/25543 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 39751 event pairs, 1581 based on Foata normal form. 28/6872 useless extension candidates. Maximal degree in co-relation 27474. Up to 5589 conditions per place. [2025-03-08 17:22:52,657 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 80 selfloop transitions, 13 changer transitions 35/132 dead transitions. [2025-03-08 17:22:52,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 132 transitions, 1308 flow [2025-03-08 17:22:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:22:52,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:22:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2025-03-08 17:22:52,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2025-03-08 17:22:52,658 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 604 flow. Second operand 9 states and 150 transitions. [2025-03-08 17:22:52,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 132 transitions, 1308 flow [2025-03-08 17:22:52,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 132 transitions, 1208 flow, removed 16 selfloop flow, removed 7 redundant places. [2025-03-08 17:22:52,700 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 624 flow [2025-03-08 17:22:52,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2025-03-08 17:22:52,701 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2025-03-08 17:22:52,701 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 624 flow [2025-03-08 17:22:52,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 17:22:52,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:52,701 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 17:22:52,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 17:22:52,701 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:52,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash -224309672, now seen corresponding path program 2 times [2025-03-08 17:22:52,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:52,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938150581] [2025-03-08 17:22:52,702 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:22:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:52,707 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:22:52,715 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:22:52,715 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:22:52,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:53,167 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 17:22:53,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:53,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938150581] [2025-03-08 17:22:53,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938150581] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:53,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:53,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:22:53,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724505271] [2025-03-08 17:22:53,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:53,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:22:53,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:53,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:22:53,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:22:53,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:53,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 624 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 17:22:53,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:53,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:53,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:54,014 INFO L124 PetriNetUnfolderBase]: 4219/6801 cut-off events. [2025-03-08 17:22:54,014 INFO L125 PetriNetUnfolderBase]: For 23903/23917 co-relation queries the response was YES. [2025-03-08 17:22:54,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26163 conditions, 6801 events. 4219/6801 cut-off events. For 23903/23917 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 39410 event pairs, 1637 based on Foata normal form. 32/6832 useless extension candidates. Maximal degree in co-relation 26131. Up to 5209 conditions per place. [2025-03-08 17:22:54,051 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 73 selfloop transitions, 20 changer transitions 37/134 dead transitions. [2025-03-08 17:22:54,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 134 transitions, 1306 flow [2025-03-08 17:22:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:22:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:22:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2025-03-08 17:22:54,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2025-03-08 17:22:54,053 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 624 flow. Second operand 9 states and 150 transitions. [2025-03-08 17:22:54,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 134 transitions, 1306 flow [2025-03-08 17:22:54,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 134 transitions, 1287 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:54,080 INFO L231 Difference]: Finished difference. Result has 98 places, 69 transitions, 688 flow [2025-03-08 17:22:54,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=688, PETRI_PLACES=98, PETRI_TRANSITIONS=69} [2025-03-08 17:22:54,081 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2025-03-08 17:22:54,081 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 69 transitions, 688 flow [2025-03-08 17:22:54,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 17:22:54,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:54,081 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 17:22:54,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 17:22:54,082 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:54,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:54,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1129706732, now seen corresponding path program 3 times [2025-03-08 17:22:54,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:54,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482052415] [2025-03-08 17:22:54,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:22:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:54,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:22:54,105 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:22:54,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:22:54,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:54,523 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 17:22:54,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:54,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482052415] [2025-03-08 17:22:54,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482052415] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:54,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:54,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:22:54,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441298122] [2025-03-08 17:22:54,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:54,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:22:54,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:54,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:22:54,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:22:54,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2025-03-08 17:22:54,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 69 transitions, 688 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 17:22:54,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:54,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2025-03-08 17:22:54,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:55,158 INFO L124 PetriNetUnfolderBase]: 4608/7436 cut-off events. [2025-03-08 17:22:55,158 INFO L125 PetriNetUnfolderBase]: For 35011/35021 co-relation queries the response was YES. [2025-03-08 17:22:55,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30149 conditions, 7436 events. 4608/7436 cut-off events. For 35011/35021 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 44013 event pairs, 1811 based on Foata normal form. 28/7463 useless extension candidates. Maximal degree in co-relation 30114. Up to 6032 conditions per place. [2025-03-08 17:22:55,203 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 75 selfloop transitions, 12 changer transitions 43/134 dead transitions. [2025-03-08 17:22:55,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 134 transitions, 1430 flow [2025-03-08 17:22:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:22:55,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:22:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2025-03-08 17:22:55,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42165242165242167 [2025-03-08 17:22:55,204 INFO L175 Difference]: Start difference. First operand has 98 places, 69 transitions, 688 flow. Second operand 9 states and 148 transitions. [2025-03-08 17:22:55,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 134 transitions, 1430 flow [2025-03-08 17:22:55,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 134 transitions, 1344 flow, removed 21 selfloop flow, removed 11 redundant places. [2025-03-08 17:22:55,266 INFO L231 Difference]: Finished difference. Result has 96 places, 73 transitions, 739 flow [2025-03-08 17:22:55,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=739, PETRI_PLACES=96, PETRI_TRANSITIONS=73} [2025-03-08 17:22:55,267 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2025-03-08 17:22:55,267 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 73 transitions, 739 flow [2025-03-08 17:22:55,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 17:22:55,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:55,267 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 17:22:55,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 17:22:55,267 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:55,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:55,267 INFO L85 PathProgramCache]: Analyzing trace with hash -173553644, now seen corresponding path program 4 times [2025-03-08 17:22:55,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:55,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963583329] [2025-03-08 17:22:55,267 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:22:55,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:55,272 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-03-08 17:22:55,283 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:22:55,284 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:22:55,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:55,359 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 17:22:55,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:55,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963583329] [2025-03-08 17:22:55,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963583329] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:55,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:55,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:55,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348515144] [2025-03-08 17:22:55,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:55,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:55,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:55,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:55,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:55,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-03-08 17:22:55,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 73 transitions, 739 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 17:22:55,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:55,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-03-08 17:22:55,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:55,780 INFO L124 PetriNetUnfolderBase]: 3448/5588 cut-off events. [2025-03-08 17:22:55,781 INFO L125 PetriNetUnfolderBase]: For 26502/26512 co-relation queries the response was YES. [2025-03-08 17:22:55,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21670 conditions, 5588 events. 3448/5588 cut-off events. For 26502/26512 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32966 event pairs, 452 based on Foata normal form. 262/5850 useless extension candidates. Maximal degree in co-relation 21635. Up to 2008 conditions per place. [2025-03-08 17:22:55,807 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 61 selfloop transitions, 11 changer transitions 65/142 dead transitions. [2025-03-08 17:22:55,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 1719 flow [2025-03-08 17:22:55,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2025-03-08 17:22:55,808 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-08 17:22:55,808 INFO L175 Difference]: Start difference. First operand has 96 places, 73 transitions, 739 flow. Second operand 6 states and 126 transitions. [2025-03-08 17:22:55,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 142 transitions, 1719 flow [2025-03-08 17:22:55,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 142 transitions, 1551 flow, removed 62 selfloop flow, removed 14 redundant places. [2025-03-08 17:22:55,838 INFO L231 Difference]: Finished difference. Result has 85 places, 46 transitions, 337 flow [2025-03-08 17:22:55,838 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=85, PETRI_TRANSITIONS=46} [2025-03-08 17:22:55,838 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2025-03-08 17:22:55,839 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 46 transitions, 337 flow [2025-03-08 17:22:55,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 17:22:55,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:55,839 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] [2025-03-08 17:22:55,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 17:22:55,839 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:55,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:55,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1186980929, now seen corresponding path program 1 times [2025-03-08 17:22:55,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:55,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543032140] [2025-03-08 17:22:55,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:55,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-08 17:22:55,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 17:22:55,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:55,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:22:55,868 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:22:55,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-08 17:22:55,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-08 17:22:55,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:55,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:22:55,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:22:55,918 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:22:55,919 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2025-03-08 17:22:55,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-03-08 17:22:55,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-03-08 17:22:55,923 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-03-08 17:22:55,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2025-03-08 17:22:55,924 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-03-08 17:22:55,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 17:22:55,924 INFO L422 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:55,992 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:22:55,993 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:22:55,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:22:55 BasicIcfg [2025-03-08 17:22:55,996 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:22:55,997 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:22:55,997 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:22:55,997 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:22:55,998 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:31" (3/4) ... [2025-03-08 17:22:55,998 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-08 17:22:56,052 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 9. [2025-03-08 17:22:56,089 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:22:56,089 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:22:56,089 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:22:56,090 INFO L158 Benchmark]: Toolchain (without parser) took 25657.47ms. Allocated memory was 142.6MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 105.0MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 378.3MB. Max. memory is 16.1GB. [2025-03-08 17:22:56,091 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:56,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.32ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 81.7MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 17:22:56,091 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.42ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 79.4MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:56,093 INFO L158 Benchmark]: Boogie Preprocessor took 36.80ms. Allocated memory is still 142.6MB. Free memory was 79.4MB in the beginning and 77.1MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:56,093 INFO L158 Benchmark]: IcfgBuilder took 509.85ms. Allocated memory is still 142.6MB. Free memory was 77.1MB in the beginning and 95.9MB in the end (delta: -18.8MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2025-03-08 17:22:56,094 INFO L158 Benchmark]: TraceAbstraction took 24640.14ms. Allocated memory was 142.6MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 95.9MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 355.5MB. Max. memory is 16.1GB. [2025-03-08 17:22:56,094 INFO L158 Benchmark]: Witness Printer took 92.47ms. Allocated memory is still 2.6GB. Free memory was 2.2GB in the beginning and 2.1GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 17:22:56,095 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 125.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.32ms. Allocated memory is still 142.6MB. Free memory was 105.0MB in the beginning and 81.7MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.42ms. Allocated memory is still 142.6MB. Free memory was 81.7MB in the beginning and 79.4MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.80ms. Allocated memory is still 142.6MB. Free memory was 79.4MB in the beginning and 77.1MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 509.85ms. Allocated memory is still 142.6MB. Free memory was 77.1MB in the beginning and 95.9MB in the end (delta: -18.8MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. * TraceAbstraction took 24640.14ms. Allocated memory was 142.6MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 95.9MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 355.5MB. Max. memory is 16.1GB. * Witness Printer took 92.47ms. Allocated memory is still 2.6GB. Free memory was 2.2GB in the beginning and 2.1GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L710] 0 _Bool main$tmp_guard0; [L711] 0 _Bool main$tmp_guard1; [L713] 0 int x = 0; [L715] 0 int y = 0; [L716] 0 _Bool y$flush_delayed; [L717] 0 int y$mem_tmp; [L718] 0 _Bool y$r_buff0_thd0; [L719] 0 _Bool y$r_buff0_thd1; [L720] 0 _Bool y$r_buff0_thd2; [L721] 0 _Bool y$r_buff0_thd3; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$r_buff1_thd3; [L726] 0 _Bool y$read_delayed; [L727] 0 int *y$read_delayed_var; [L728] 0 int y$w_buff0; [L729] 0 _Bool y$w_buff0_used; [L730] 0 int y$w_buff1; [L731] 0 _Bool y$w_buff1_used; [L733] 0 int z = 0; [L734] 0 _Bool weak$$choice0; [L735] 0 _Bool weak$$choice2; [L811] 0 pthread_t t2492; [L812] FCALL, FORK 0 pthread_create(&t2492, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2492=-3, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L813] 0 pthread_t t2493; [L814] FCALL, FORK 0 pthread_create(&t2493, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2492=-3, t2493=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L815] 0 pthread_t t2494; [L816] FCALL, FORK 0 pthread_create(&t2494, ((void *)0), P2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2492=-3, t2493=-2, t2494=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L774] 3 y$w_buff1 = y$w_buff0 [L775] 3 y$w_buff0 = 2 [L776] 3 y$w_buff1_used = y$w_buff0_used [L777] 3 y$w_buff0_used = (_Bool)1 [L778] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L778] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L779] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L780] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L781] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L782] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L783] 3 y$r_buff0_thd3 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L786] 3 z = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L739] 1 z = 2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=2] [L742] 1 x = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=2] [L754] 2 x = 2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=2] [L757] 2 y = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=2] [L760] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L761] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L762] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L763] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L764] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1, z=2] [L789] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L790] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L791] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L792] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L793] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L767] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L796] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L818] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492=-3, t2493=-2, t2494=-1, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L820] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L820] RET 0 assume_abort_if_not(main$tmp_guard0) [L822] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L823] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L824] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L825] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L826] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492=-3, t2493=-2, t2494=-1, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L829] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L830] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L831] 0 y$flush_delayed = weak$$choice2 [L832] 0 y$mem_tmp = y [L833] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L834] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L835] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L836] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L837] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L838] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L839] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2) [L841] 0 y = y$flush_delayed ? y$mem_tmp : y [L842] 0 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492=-3, t2493=-2, t2494=-1, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L844] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2, z=2] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 812]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 61 edges, 6 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: 24.5s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1166 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1155 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3533 IncrementalHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 10 mSDtfsCounter, 3533 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=757occurred in iteration=10, InterpolantAutomatonStates: 122, 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, 0.3s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 302 ConstructedInterpolants, 0 QuantifiedInterpolants, 2775 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 RESULT: Ultimate proved your program to be incorrect! [2025-03-08 17:22:56,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE