./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/rfi000_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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/rfi000_tso.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 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:33:12,384 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:33:12,432 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:33:12,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:33:12,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:33:12,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:33:12,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:33:12,457 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:33:12,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:33:12,458 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:33:12,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:33:12,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:33:12,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:33:12,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:33:12,459 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:33:12,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:33:12,460 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:33:12,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:33:12,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:33:12,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:33:12,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:33:12,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:33:12,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:33:12,461 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:33:12,461 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:33:12,461 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:33:12,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:33:12,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:33:12,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:33:12,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:33:12,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:33:12,462 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 -> 5128c539cd3051e20c09e1924eb0951d5be697be251e10d3c281464ed4c436cd [2025-03-13 21:33:12,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:33:12,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:33:12,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:33:12,683 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:33:12,683 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:33:12,684 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2025-03-13 21:33:13,818 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec84eb5d/45fbbad0fb164b5791c2fc80b9e95576/FLAGeaa06b8f7 [2025-03-13 21:33:14,107 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:33:14,109 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/rfi000_tso.i [2025-03-13 21:33:14,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec84eb5d/45fbbad0fb164b5791c2fc80b9e95576/FLAGeaa06b8f7 [2025-03-13 21:33:14,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ec84eb5d/45fbbad0fb164b5791c2fc80b9e95576 [2025-03-13 21:33:14,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:33:14,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:33:14,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:33:14,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:33:14,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:33:14,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18116f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14, skipping insertion in model container [2025-03-13 21:33:14,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,444 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:33:14,565 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/rfi000_tso.i[944,957] [2025-03-13 21:33:14,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:33:14,713 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:33:14,722 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/rfi000_tso.i[944,957] [2025-03-13 21:33:14,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:33:14,792 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:33:14,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14 WrapperNode [2025-03-13 21:33:14,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:33:14,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:33:14,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:33:14,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:33:14,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,809 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,828 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 167 [2025-03-13 21:33:14,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:33:14,829 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:33:14,829 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:33:14,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:33:14,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,853 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]. [2025-03-13 21:33:14,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,864 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:33:14,877 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:33:14,878 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:33:14,878 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:33:14,879 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (1/1) ... [2025-03-13 21:33:14,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:33:14,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:33:14,905 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) [2025-03-13 21:33:14,908 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 [2025-03-13 21:33:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:33:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:33:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:33:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:33:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:33:14,924 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:33:14,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:33:14,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:33:14,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:33:14,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:33:14,925 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:33:15,009 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:33:15,011 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:33:15,280 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:33:15,281 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:33:15,281 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:33:15,529 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:33:15,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:33:15 BoogieIcfgContainer [2025-03-13 21:33:15,531 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:33:15,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:33:15,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:33:15,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:33:15,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:33:14" (1/3) ... [2025-03-13 21:33:15,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372d0c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:33:15, skipping insertion in model container [2025-03-13 21:33:15,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:33:14" (2/3) ... [2025-03-13 21:33:15,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@372d0c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:33:15, skipping insertion in model container [2025-03-13 21:33:15,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:33:15" (3/3) ... [2025-03-13 21:33:15,538 INFO L128 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2025-03-13 21:33:15,550 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:33:15,552 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rfi000_tso.i that has 3 procedures, 32 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-13 21:33:15,552 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:33:15,595 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:33:15,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 72 flow [2025-03-13 21:33:15,643 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2025-03-13 21:33:15,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:33:15,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 1/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-03-13 21:33:15,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 32 transitions, 72 flow [2025-03-13 21:33:15,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 30 transitions, 66 flow [2025-03-13 21:33:15,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:33:15,670 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;@5b9a0c8b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:33:15,670 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-13 21:33:15,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:33:15,676 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-13 21:33:15,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:33:15,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:15,677 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:15,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:33:15,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:15,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1276365278, now seen corresponding path program 1 times [2025-03-13 21:33:15,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265882591] [2025-03-13 21:33:15,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:15,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:15,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-13 21:33:15,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-13 21:33:15,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:15,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:16,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:16,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265882591] [2025-03-13 21:33:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265882591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:16,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:16,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 21:33:16,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629933130] [2025-03-13 21:33:16,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:16,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 21:33:16,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:16,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 21:33:16,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 21:33:16,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-13 21:33:16,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2025-03-13 21:33:16,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:16,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-13 21:33:16,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:16,354 INFO L124 PetriNetUnfolderBase]: 619/1055 cut-off events. [2025-03-13 21:33:16,354 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 21:33:16,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 1055 events. 619/1055 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4980 event pairs, 127 based on Foata normal form. 48/1088 useless extension candidates. Maximal degree in co-relation 2079. Up to 781 conditions per place. [2025-03-13 21:33:16,364 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 31 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2025-03-13 21:33:16,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 156 flow [2025-03-13 21:33:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 21:33:16,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 21:33:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2025-03-13 21:33:16,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2025-03-13 21:33:16,376 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 66 flow. Second operand 3 states and 59 transitions. [2025-03-13 21:33:16,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 156 flow [2025-03-13 21:33:16,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:33:16,383 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 62 flow [2025-03-13 21:33:16,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2025-03-13 21:33:16,388 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2025-03-13 21:33:16,389 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 62 flow [2025-03-13 21:33:16,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2025-03-13 21:33:16,389 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:16,390 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:16,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:33:16,390 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:33:16,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1053919468, now seen corresponding path program 1 times [2025-03-13 21:33:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:16,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772327593] [2025-03-13 21:33:16,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:16,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:16,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-13 21:33:16,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-13 21:33:16,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:16,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:16,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:16,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772327593] [2025-03-13 21:33:16,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772327593] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:16,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:16,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:33:16,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217473082] [2025-03-13 21:33:16,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:16,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:33:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:16,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:33:16,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:33:16,694 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-13 21:33:16,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-03-13 21:33:16,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:16,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-13 21:33:16,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:16,855 INFO L124 PetriNetUnfolderBase]: 355/707 cut-off events. [2025-03-13 21:33:16,855 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-03-13 21:33:16,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 707 events. 355/707 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3285 event pairs, 103 based on Foata normal form. 48/728 useless extension candidates. Maximal degree in co-relation 1375. Up to 291 conditions per place. [2025-03-13 21:33:16,862 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 43 selfloop transitions, 4 changer transitions 1/53 dead transitions. [2025-03-13 21:33:16,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 53 transitions, 216 flow [2025-03-13 21:33:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:33:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:33:16,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-03-13 21:33:16,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-03-13 21:33:16,865 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 62 flow. Second operand 4 states and 78 transitions. [2025-03-13 21:33:16,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 53 transitions, 216 flow [2025-03-13 21:33:16,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-13 21:33:16,867 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 84 flow [2025-03-13 21:33:16,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2025-03-13 21:33:16,869 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2025-03-13 21:33:16,869 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 84 flow [2025-03-13 21:33:16,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2025-03-13 21:33:16,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:16,870 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:16,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:33:16,870 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:33:16,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:16,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1264150933, now seen corresponding path program 1 times [2025-03-13 21:33:16,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:16,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045686557] [2025-03-13 21:33:16,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:16,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:16,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-13 21:33:16,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-13 21:33:16,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:16,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:17,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:17,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045686557] [2025-03-13 21:33:17,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045686557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:17,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:17,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:33:17,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960721006] [2025-03-13 21:33:17,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:17,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:33:17,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:17,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:33:17,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:33:17,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-13 21:33:17,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2025-03-13 21:33:17,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:17,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-13 21:33:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:17,209 INFO L124 PetriNetUnfolderBase]: 177/345 cut-off events. [2025-03-13 21:33:17,210 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2025-03-13 21:33:17,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 345 events. 177/345 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1187 event pairs, 69 based on Foata normal form. 24/362 useless extension candidates. Maximal degree in co-relation 795. Up to 146 conditions per place. [2025-03-13 21:33:17,211 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 34 selfloop transitions, 6 changer transitions 1/46 dead transitions. [2025-03-13 21:33:17,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 205 flow [2025-03-13 21:33:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:33:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:33:17,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2025-03-13 21:33:17,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4875 [2025-03-13 21:33:17,213 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 84 flow. Second operand 5 states and 78 transitions. [2025-03-13 21:33:17,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 205 flow [2025-03-13 21:33:17,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 46 transitions, 196 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-13 21:33:17,216 INFO L231 Difference]: Finished difference. Result has 41 places, 29 transitions, 100 flow [2025-03-13 21:33:17,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2025-03-13 21:33:17,217 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2025-03-13 21:33:17,217 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 29 transitions, 100 flow [2025-03-13 21:33:17,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2025-03-13 21:33:17,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:17,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:17,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:33:17,218 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:33:17,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1923628022, now seen corresponding path program 1 times [2025-03-13 21:33:17,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:17,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267699752] [2025-03-13 21:33:17,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:33:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:17,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:33:17,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:33:17,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:33:17,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:18,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:18,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267699752] [2025-03-13 21:33:18,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267699752] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:18,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:18,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:33:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6337786] [2025-03-13 21:33:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:18,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:33:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:18,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:33:18,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:33:18,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2025-03-13 21:33:18,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 29 transitions, 100 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) [2025-03-13 21:33:18,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:18,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2025-03-13 21:33:18,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:18,258 INFO L124 PetriNetUnfolderBase]: 233/456 cut-off events. [2025-03-13 21:33:18,259 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2025-03-13 21:33:18,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 456 events. 233/456 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1726 event pairs, 28 based on Foata normal form. 4/458 useless extension candidates. Maximal degree in co-relation 1102. Up to 238 conditions per place. [2025-03-13 21:33:18,261 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 30 selfloop transitions, 4 changer transitions 20/58 dead transitions. [2025-03-13 21:33:18,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 304 flow [2025-03-13 21:33:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:33:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:33:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-03-13 21:33:18,262 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.453125 [2025-03-13 21:33:18,262 INFO L175 Difference]: Start difference. First operand has 41 places, 29 transitions, 100 flow. Second operand 6 states and 87 transitions. [2025-03-13 21:33:18,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 304 flow [2025-03-13 21:33:18,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 251 flow, removed 10 selfloop flow, removed 6 redundant places. [2025-03-13 21:33:18,264 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 88 flow [2025-03-13 21:33:18,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2025-03-13 21:33:18,265 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2025-03-13 21:33:18,265 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 88 flow [2025-03-13 21:33:18,265 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) [2025-03-13 21:33:18,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:18,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:18,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:33:18,265 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:33:18,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:18,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2038392402, now seen corresponding path program 2 times [2025-03-13 21:33:18,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:18,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440732345] [2025-03-13 21:33:18,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:33:18,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:18,275 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:33:18,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:33:18,354 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:33:18,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:20,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440732345] [2025-03-13 21:33:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440732345] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:20,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:20,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-13 21:33:20,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400052715] [2025-03-13 21:33:20,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:20,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-13 21:33:20,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:20,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-13 21:33:20,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-13 21:33:20,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2025-03-13 21:33:20,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 88 flow. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 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) [2025-03-13 21:33:20,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:20,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2025-03-13 21:33:20,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:21,227 INFO L124 PetriNetUnfolderBase]: 172/353 cut-off events. [2025-03-13 21:33:21,227 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-03-13 21:33:21,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 353 events. 172/353 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1164 event pairs, 24 based on Foata normal form. 4/356 useless extension candidates. Maximal degree in co-relation 790. Up to 103 conditions per place. [2025-03-13 21:33:21,229 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 29 selfloop transitions, 8 changer transitions 30/71 dead transitions. [2025-03-13 21:33:21,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 331 flow [2025-03-13 21:33:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-13 21:33:21,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-13 21:33:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2025-03-13 21:33:21,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2025-03-13 21:33:21,232 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 88 flow. Second operand 11 states and 130 transitions. [2025-03-13 21:33:21,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 331 flow [2025-03-13 21:33:21,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 71 transitions, 313 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-13 21:33:21,235 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 106 flow [2025-03-13 21:33:21,236 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=106, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2025-03-13 21:33:21,237 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2025-03-13 21:33:21,237 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 106 flow [2025-03-13 21:33:21,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 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) [2025-03-13 21:33:21,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:33:21,237 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:33:21,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:33:21,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:33:21,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:33:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash -245129646, now seen corresponding path program 3 times [2025-03-13 21:33:21,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:33:21,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802070821] [2025-03-13 21:33:21,239 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:33:21,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:33:21,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:33:21,336 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:33:21,337 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:33:21,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:33:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:33:23,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:33:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802070821] [2025-03-13 21:33:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802070821] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:33:23,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:33:23,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-13 21:33:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054808094] [2025-03-13 21:33:23,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:33:23,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-13 21:33:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:33:23,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-13 21:33:23,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-13 21:33:23,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2025-03-13 21:33:23,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 106 flow. Second operand has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 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) [2025-03-13 21:33:23,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:33:23,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2025-03-13 21:33:23,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:33:24,753 INFO L124 PetriNetUnfolderBase]: 63/140 cut-off events. [2025-03-13 21:33:24,753 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-13 21:33:24,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 140 events. 63/140 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 291 event pairs, 4 based on Foata normal form. 4/143 useless extension candidates. Maximal degree in co-relation 346. Up to 55 conditions per place. [2025-03-13 21:33:24,754 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2025-03-13 21:33:24,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 43 transitions, 212 flow [2025-03-13 21:33:24,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-13 21:33:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-13 21:33:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2025-03-13 21:33:24,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.303125 [2025-03-13 21:33:24,755 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 106 flow. Second operand 10 states and 97 transitions. [2025-03-13 21:33:24,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 43 transitions, 212 flow [2025-03-13 21:33:24,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 191 flow, removed 2 selfloop flow, removed 8 redundant places. [2025-03-13 21:33:24,756 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2025-03-13 21:33:24,756 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2025-03-13 21:33:24,756 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2025-03-13 21:33:24,757 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2025-03-13 21:33:24,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.75) internal successors, (93), 12 states have internal predecessors, (93), 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) [2025-03-13 21:33:24,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-03-13 21:33:24,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2025-03-13 21:33:24,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-13 21:33:24,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-13 21:33:24,759 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2025-03-13 21:33:24,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:33:24,760 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-03-13 21:33:24,763 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-13 21:33:24,763 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-13 21:33:24,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.03 09:33:24 BasicIcfg [2025-03-13 21:33:24,766 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-13 21:33:24,766 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-13 21:33:24,766 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-13 21:33:24,767 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-13 21:33:24,767 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:33:15" (3/4) ... [2025-03-13 21:33:24,768 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-13 21:33:24,769 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-13 21:33:24,770 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-13 21:33:24,772 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2025-03-13 21:33:24,772 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-13 21:33:24,772 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-13 21:33:24,772 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-13 21:33:24,824 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-13 21:33:24,824 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-13 21:33:24,824 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-13 21:33:24,825 INFO L158 Benchmark]: Toolchain (without parser) took 10421.94ms. Allocated memory was 201.3MB in the beginning and 478.2MB in the end (delta: 276.8MB). Free memory was 153.9MB in the beginning and 202.5MB in the end (delta: -48.6MB). Peak memory consumption was 224.0MB. Max. memory is 16.1GB. [2025-03-13 21:33:24,825 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 119.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:33:24,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.20ms. Allocated memory is still 201.3MB. Free memory was 153.5MB in the beginning and 128.7MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-13 21:33:24,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.66ms. Allocated memory is still 201.3MB. Free memory was 128.7MB in the beginning and 125.6MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:33:24,827 INFO L158 Benchmark]: Boogie Preprocessor took 45.53ms. Allocated memory is still 201.3MB. Free memory was 125.3MB in the beginning and 121.5MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:33:24,827 INFO L158 Benchmark]: IcfgBuilder took 653.62ms. Allocated memory is still 201.3MB. Free memory was 121.5MB in the beginning and 134.1MB in the end (delta: -12.6MB). Peak memory consumption was 83.2MB. Max. memory is 16.1GB. [2025-03-13 21:33:24,828 INFO L158 Benchmark]: TraceAbstraction took 9233.14ms. Allocated memory was 201.3MB in the beginning and 478.2MB in the end (delta: 276.8MB). Free memory was 133.6MB in the beginning and 206.6MB in the end (delta: -73.1MB). Peak memory consumption was 207.9MB. Max. memory is 16.1GB. [2025-03-13 21:33:24,828 INFO L158 Benchmark]: Witness Printer took 57.66ms. Allocated memory is still 478.2MB. Free memory was 206.6MB in the beginning and 202.5MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:33:24,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 119.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.20ms. Allocated memory is still 201.3MB. Free memory was 153.5MB in the beginning and 128.7MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.66ms. Allocated memory is still 201.3MB. Free memory was 128.7MB in the beginning and 125.6MB in the end (delta: 3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.53ms. Allocated memory is still 201.3MB. Free memory was 125.3MB in the beginning and 121.5MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 653.62ms. Allocated memory is still 201.3MB. Free memory was 121.5MB in the beginning and 134.1MB in the end (delta: -12.6MB). Peak memory consumption was 83.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9233.14ms. Allocated memory was 201.3MB in the beginning and 478.2MB in the end (delta: 276.8MB). Free memory was 133.6MB in the beginning and 206.6MB in the end (delta: -73.1MB). Peak memory consumption was 207.9MB. Max. memory is 16.1GB. * Witness Printer took 57.66ms. Allocated memory is still 478.2MB. Free memory was 206.6MB in the beginning and 202.5MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 285 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 163 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 818 IncrementalHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 0 mSDtfsCounter, 818 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=5, InterpolantAutomatonStates: 39, 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, 0.4s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 1511 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-13 21:33:24,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE