./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/mix027_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 4f758b611596923134c7292307712c4e6636a1a24449562e0f1ec6ef2697b141 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:06:36,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:06:36,419 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:06:36,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:06:36,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:06:36,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:06:36,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:06:36,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:06:36,449 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:06:36,450 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:06:36,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:06:36,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:06:36,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:06:36,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:06:36,451 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:06:36,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:06:36,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:06:36,451 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:06:36,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:06:36,452 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:06:36,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:06:36,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:06:36,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:06:36,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:06:36,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:06:36,453 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:06:36,453 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:06:36,453 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:06:36,453 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:06:36,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:06:36,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:06:36,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:06:36,454 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:06:36,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:06:36,454 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 -> 4f758b611596923134c7292307712c4e6636a1a24449562e0f1ec6ef2697b141 [2025-03-04 02:06:36,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:06:36,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:06:36,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:06:36,688 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:06:36,688 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:06:36,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i [2025-03-04 02:06:37,788 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9c9ec9b/5ba94a74eba24f378fb1a014559d9631/FLAGcaa3e183f [2025-03-04 02:06:38,107 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:06:38,108 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix027_power.opt_pso.opt_rmo.opt.i [2025-03-04 02:06:38,131 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9c9ec9b/5ba94a74eba24f378fb1a014559d9631/FLAGcaa3e183f [2025-03-04 02:06:38,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9c9ec9b/5ba94a74eba24f378fb1a014559d9631 [2025-03-04 02:06:38,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:06:38,370 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:06:38,371 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:06:38,371 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:06:38,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:06:38,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d89f267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38, skipping insertion in model container [2025-03-04 02:06:38,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:06:38,530 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/mix027_power.opt_pso.opt_rmo.opt.i[966,979] [2025-03-04 02:06:38,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:06:38,726 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:06:38,735 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/mix027_power.opt_pso.opt_rmo.opt.i[966,979] [2025-03-04 02:06:38,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:06:38,801 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:06:38,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38 WrapperNode [2025-03-04 02:06:38,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:06:38,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:06:38,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:06:38,803 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:06:38,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,844 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2025-03-04 02:06:38,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:06:38,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:06:38,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:06:38,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:06:38,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,859 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,870 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]. [2025-03-04 02:06:38,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,878 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,879 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:06:38,887 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:06:38,887 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:06:38,887 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:06:38,894 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (1/1) ... [2025-03-04 02:06:38,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:06:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:06:38,920 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) [2025-03-04 02:06:38,926 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 [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-04 02:06:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-04 02:06:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-04 02:06:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-04 02:06:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 02:06:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:06:38,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:06:38,942 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:06:39,098 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:06:39,101 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:06:39,440 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:06:39,440 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:06:39,639 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:06:39,640 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:06:39,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:06:39 BoogieIcfgContainer [2025-03-04 02:06:39,640 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:06:39,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:06:39,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:06:39,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:06:39,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:06:38" (1/3) ... [2025-03-04 02:06:39,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1771f961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:06:39, skipping insertion in model container [2025-03-04 02:06:39,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:06:38" (2/3) ... [2025-03-04 02:06:39,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1771f961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:06:39, skipping insertion in model container [2025-03-04 02:06:39,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:06:39" (3/3) ... [2025-03-04 02:06:39,649 INFO L128 eAbstractionObserver]: Analyzing ICFG mix027_power.opt_pso.opt_rmo.opt.i [2025-03-04 02:06:39,660 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:06:39,663 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix027_power.opt_pso.opt_rmo.opt.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-04 02:06:39,663 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:06:39,717 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 02:06:39,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2025-03-04 02:06:39,770 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2025-03-04 02:06:39,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:06:39,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2025-03-04 02:06:39,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2025-03-04 02:06:39,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2025-03-04 02:06:39,791 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:06:39,799 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;@56e64fc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:06:39,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-04 02:06:39,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:06:39,807 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2025-03-04 02:06:39,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 02:06:39,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:06:39,808 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:06:39,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 02:06:39,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:06:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1344354219, now seen corresponding path program 1 times [2025-03-04 02:06:39,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:06:39,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476802955] [2025-03-04 02:06:39,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:06:39,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:06:39,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 02:06:39,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 02:06:39,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:06:39,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:06:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:06:40,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:06:40,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476802955] [2025-03-04 02:06:40,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476802955] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:06:40,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:06:40,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 02:06:40,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157370495] [2025-03-04 02:06:40,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:06:40,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 02:06:40,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:06:40,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 02:06:40,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 02:06:40,182 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-04 02:06:40,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:06:40,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:06:40,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-04 02:06:40,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:06:43,599 INFO L124 PetriNetUnfolderBase]: 40307/53603 cut-off events. [2025-03-04 02:06:43,599 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2025-03-04 02:06:43,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107047 conditions, 53603 events. 40307/53603 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 318419 event pairs, 5087 based on Foata normal form. 1476/54814 useless extension candidates. Maximal degree in co-relation 107035. Up to 45661 conditions per place. [2025-03-04 02:06:43,900 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 57 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2025-03-04 02:06:43,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 273 flow [2025-03-04 02:06:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 02:06:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 02:06:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-04 02:06:43,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2025-03-04 02:06:43,910 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2025-03-04 02:06:43,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 273 flow [2025-03-04 02:06:43,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-04 02:06:43,918 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2025-03-04 02:06:43,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-03-04 02:06:43,924 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2025-03-04 02:06:43,924 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2025-03-04 02:06:43,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:06:43,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:06:43,924 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:06:43,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:06:43,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 02:06:43,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:06:43,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1799285188, now seen corresponding path program 1 times [2025-03-04 02:06:43,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:06:43,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061365981] [2025-03-04 02:06:43,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:06:43,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:06:43,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 02:06:43,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 02:06:43,950 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:06:43,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:06:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:06:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:06:44,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061365981] [2025-03-04 02:06:44,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061365981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:06:44,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:06:44,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 02:06:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321982601] [2025-03-04 02:06:44,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:06:44,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 02:06:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:06:44,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 02:06:44,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 02:06:44,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-04 02:06:44,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:06:44,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:06:44,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-04 02:06:44,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:06:51,753 INFO L124 PetriNetUnfolderBase]: 108901/145097 cut-off events. [2025-03-04 02:06:51,754 INFO L125 PetriNetUnfolderBase]: For 5080/5080 co-relation queries the response was YES. [2025-03-04 02:06:52,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294581 conditions, 145097 events. 108901/145097 cut-off events. For 5080/5080 co-relation queries the response was YES. Maximal size of possible extension queue 4249. Compared 935253 event pairs, 26149 based on Foata normal form. 0/142296 useless extension candidates. Maximal degree in co-relation 294571. Up to 55421 conditions per place. [2025-03-04 02:06:52,465 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 59 selfloop transitions, 8 changer transitions 133/205 dead transitions. [2025-03-04 02:06:52,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 205 transitions, 840 flow [2025-03-04 02:06:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 02:06:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-04 02:06:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 283 transitions. [2025-03-04 02:06:52,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6417233560090703 [2025-03-04 02:06:52,468 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 283 transitions. [2025-03-04 02:06:52,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 205 transitions, 840 flow [2025-03-04 02:06:52,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 205 transitions, 822 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 02:06:52,488 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 202 flow [2025-03-04 02:06:52,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2025-03-04 02:06:52,489 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2025-03-04 02:06:52,489 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 202 flow [2025-03-04 02:06:52,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:06:52,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:06:52,490 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:06:52,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 02:06:52,490 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 02:06:52,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:06:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1248249745, now seen corresponding path program 1 times [2025-03-04 02:06:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:06:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692815405] [2025-03-04 02:06:52,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:06:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:06:52,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 02:06:52,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 02:06:52,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:06:52,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:06:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:06:52,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:06:52,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692815405] [2025-03-04 02:06:52,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692815405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:06:52,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:06:52,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:06:52,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688581496] [2025-03-04 02:06:52,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:06:52,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:06:52,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:06:52,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:06:52,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:06:52,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-04 02:06:52,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:06:52,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:06:52,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-04 02:06:52,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:06:59,950 INFO L124 PetriNetUnfolderBase]: 84679/113807 cut-off events. [2025-03-04 02:06:59,951 INFO L125 PetriNetUnfolderBase]: For 135166/135194 co-relation queries the response was YES. [2025-03-04 02:07:00,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324909 conditions, 113807 events. 84679/113807 cut-off events. For 135166/135194 co-relation queries the response was YES. Maximal size of possible extension queue 3353. Compared 731252 event pairs, 5427 based on Foata normal form. 2356/116144 useless extension candidates. Maximal degree in co-relation 324891. Up to 52925 conditions per place. [2025-03-04 02:07:00,730 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 76 selfloop transitions, 12 changer transitions 114/207 dead transitions. [2025-03-04 02:07:00,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 207 transitions, 1226 flow [2025-03-04 02:07:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 02:07:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 02:07:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 285 transitions. [2025-03-04 02:07:00,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2025-03-04 02:07:00,736 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 202 flow. Second operand 10 states and 285 transitions. [2025-03-04 02:07:00,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 207 transitions, 1226 flow [2025-03-04 02:07:01,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 207 transitions, 1102 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-03-04 02:07:01,701 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 296 flow [2025-03-04 02:07:01,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=296, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2025-03-04 02:07:01,702 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2025-03-04 02:07:01,702 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 296 flow [2025-03-04 02:07:01,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:07:01,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:07:01,702 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 02:07:01,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 02:07:01,703 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 02:07:01,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:07:01,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1381007747, now seen corresponding path program 1 times [2025-03-04 02:07:01,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:07:01,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045011522] [2025-03-04 02:07:01,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:07:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:07:01,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 02:07:01,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 02:07:01,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:07:01,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:07:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:07:01,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:07:01,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045011522] [2025-03-04 02:07:01,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045011522] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:07:01,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:07:01,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:07:01,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267163371] [2025-03-04 02:07:01,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:07:01,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:07:01,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:07:01,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:07:01,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:07:01,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-04 02:07:01,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:07:01,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:07:01,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-04 02:07:01,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 02:07:10,141 INFO L124 PetriNetUnfolderBase]: 83391/112029 cut-off events. [2025-03-04 02:07:10,142 INFO L125 PetriNetUnfolderBase]: For 275947/275964 co-relation queries the response was YES. [2025-03-04 02:07:10,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351372 conditions, 112029 events. 83391/112029 cut-off events. For 275947/275964 co-relation queries the response was YES. Maximal size of possible extension queue 3237. Compared 719768 event pairs, 15141 based on Foata normal form. 2425/114454 useless extension candidates. Maximal degree in co-relation 351347. Up to 52023 conditions per place. [2025-03-04 02:07:11,116 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 87 selfloop transitions, 18 changer transitions 118/228 dead transitions. [2025-03-04 02:07:11,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 228 transitions, 1496 flow [2025-03-04 02:07:11,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 02:07:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 02:07:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 294 transitions. [2025-03-04 02:07:11,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-03-04 02:07:11,118 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 296 flow. Second operand 10 states and 294 transitions. [2025-03-04 02:07:11,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 228 transitions, 1496 flow [2025-03-04 02:07:14,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 228 transitions, 1468 flow, removed 14 selfloop flow, removed 0 redundant places. [2025-03-04 02:07:14,804 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 486 flow [2025-03-04 02:07:14,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=486, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2025-03-04 02:07:14,805 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2025-03-04 02:07:14,805 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 486 flow [2025-03-04 02:07:14,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:07:14,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:07:14,806 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] [2025-03-04 02:07:14,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 02:07:14,806 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 02:07:14,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:07:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1867633006, now seen corresponding path program 1 times [2025-03-04 02:07:14,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:07:14,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305266305] [2025-03-04 02:07:14,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:07:14,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:07:14,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 02:07:14,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 02:07:14,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:07:14,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 02:07:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 02:07:14,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 02:07:14,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305266305] [2025-03-04 02:07:14,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305266305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 02:07:14,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 02:07:14,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 02:07:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093577098] [2025-03-04 02:07:14,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 02:07:14,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 02:07:14,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 02:07:14,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 02:07:14,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-04 02:07:14,961 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-04 02:07:14,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 486 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 02:07:14,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 02:07:14,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-04 02:07:14,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand