./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe005_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe005_tso.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:03:54,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:03:54,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:03:54,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:03:54,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:03:54,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:03:54,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:03:54,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:03:54,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:03:54,324 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:03:54,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:03:54,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:03:54,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:03:54,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:03:54,325 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:03:54,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:03:54,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:03:54,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:03:54,327 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:03:54,327 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:03:54,327 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:03:54,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:03:54,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:03:54,327 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:03:54,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:03:54,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:03:54,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:03:54,328 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-jdk21/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 -> 0f4fff0b2b9fbf3a1c21190a7a3a2488ff184faa22678fe9af5f2740e4422fce [2025-02-08 01:03:54,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:03:54,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:03:54,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:03:54,589 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:03:54,589 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:03:54,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe005_tso.i [2025-02-08 01:03:55,918 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/59881c1cb/9e982f4299204ffe893258e43964725b/FLAG165081c39 [2025-02-08 01:03:56,222 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:03:56,223 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.i [2025-02-08 01:03:56,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/59881c1cb/9e982f4299204ffe893258e43964725b/FLAG165081c39 [2025-02-08 01:03:56,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/59881c1cb/9e982f4299204ffe893258e43964725b [2025-02-08 01:03:56,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:03:56,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:03:56,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:03:56,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:03:56,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:03:56,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b8099f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56, skipping insertion in model container [2025-02-08 01:03:56,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:03:56,417 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2025-02-08 01:03:56,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:03:56,526 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:03:56,533 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe005_tso.i[945,958] [2025-02-08 01:03:56,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:03:56,586 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:03:56,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56 WrapperNode [2025-02-08 01:03:56,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:03:56,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:03:56,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:03:56,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:03:56,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,621 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-02-08 01:03:56,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:03:56,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:03:56,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:03:56,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:03:56,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,641 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]. [2025-02-08 01:03:56,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,648 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,649 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:03:56,654 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:03:56,654 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:03:56,654 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:03:56,655 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (1/1) ... [2025-02-08 01:03:56,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:03:56,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:03:56,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:03:56,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:03:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:03:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:03:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:03:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:03:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:03:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:03:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:03:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:03:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:03:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:03:56,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:03:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:03:56,705 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:03:56,802 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:03:56,803 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:03:56,906 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:03:56,906 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:03:56,990 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:03:56,991 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:03:56,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:56 BoogieIcfgContainer [2025-02-08 01:03:56,991 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:03:56,993 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:03:56,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:03:56,997 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:03:56,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:03:56" (1/3) ... [2025-02-08 01:03:56,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf5da69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:03:56, skipping insertion in model container [2025-02-08 01:03:56,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:03:56" (2/3) ... [2025-02-08 01:03:57,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bf5da69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:03:56, skipping insertion in model container [2025-02-08 01:03:57,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:56" (3/3) ... [2025-02-08 01:03:57,001 INFO L128 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2025-02-08 01:03:57,015 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:03:57,017 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe005_tso.i that has 4 procedures, 39 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:03:57,017 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:03:57,062 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:03:57,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2025-02-08 01:03:57,111 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2025-02-08 01:03:57,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:03:57,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2025-02-08 01:03:57,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2025-02-08 01:03:57,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2025-02-08 01:03:57,132 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:03:57,144 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;@6bac0599, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:03:57,144 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:03:57,158 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:03:57,158 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-02-08 01:03:57,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:03:57,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:57,159 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:57,159 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:57,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:57,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1730183841, now seen corresponding path program 1 times [2025-02-08 01:03:57,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:57,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465622853] [2025-02-08 01:03:57,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:57,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:03:57,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:03:57,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:57,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:57,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:57,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465622853] [2025-02-08 01:03:57,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465622853] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:57,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:57,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:03:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952923011] [2025-02-08 01:03:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:57,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:03:57,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:57,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:03:57,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:03:57,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 01:03:57,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:57,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:57,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 01:03:57,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:58,188 INFO L124 PetriNetUnfolderBase]: 3619/5687 cut-off events. [2025-02-08 01:03:58,188 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-02-08 01:03:58,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 5687 events. 3619/5687 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 32459 event pairs, 661 based on Foata normal form. 252/5933 useless extension candidates. Maximal degree in co-relation 11115. Up to 2841 conditions per place. [2025-02-08 01:03:58,234 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 57 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2025-02-08 01:03:58,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 277 flow [2025-02-08 01:03:58,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:03:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:03:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2025-02-08 01:03:58,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2025-02-08 01:03:58,250 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 4 states and 101 transitions. [2025-02-08 01:03:58,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 277 flow [2025-02-08 01:03:58,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 68 transitions, 272 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:03:58,260 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 106 flow [2025-02-08 01:03:58,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2025-02-08 01:03:58,265 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2025-02-08 01:03:58,267 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 106 flow [2025-02-08 01:03:58,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:58,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:58,268 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:58,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:03:58,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:58,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:58,270 INFO L85 PathProgramCache]: Analyzing trace with hash -325984030, now seen corresponding path program 1 times [2025-02-08 01:03:58,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:58,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800007333] [2025-02-08 01:03:58,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:58,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:58,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 01:03:58,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 01:03:58,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:58,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:58,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:58,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800007333] [2025-02-08 01:03:58,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800007333] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:58,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:58,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:03:58,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500669701] [2025-02-08 01:03:58,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:58,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:03:58,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:58,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:03:58,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:03:58,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 01:03:58,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:58,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:58,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 01:03:58,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:58,814 INFO L124 PetriNetUnfolderBase]: 2091/3295 cut-off events. [2025-02-08 01:03:58,814 INFO L125 PetriNetUnfolderBase]: For 626/626 co-relation queries the response was YES. [2025-02-08 01:03:58,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 3295 events. 2091/3295 cut-off events. For 626/626 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 16402 event pairs, 427 based on Foata normal form. 172/3461 useless extension candidates. Maximal degree in co-relation 7543. Up to 1128 conditions per place. [2025-02-08 01:03:58,829 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 73 selfloop transitions, 8 changer transitions 1/87 dead transitions. [2025-02-08 01:03:58,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 87 transitions, 393 flow [2025-02-08 01:03:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:03:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:03:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2025-02-08 01:03:58,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6615384615384615 [2025-02-08 01:03:58,831 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 106 flow. Second operand 5 states and 129 transitions. [2025-02-08 01:03:58,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 87 transitions, 393 flow [2025-02-08 01:03:58,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 87 transitions, 383 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 01:03:58,835 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 146 flow [2025-02-08 01:03:58,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2025-02-08 01:03:58,835 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2025-02-08 01:03:58,836 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 146 flow [2025-02-08 01:03:58,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:58,836 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:58,836 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] [2025-02-08 01:03:58,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:03:58,836 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:58,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 859546739, now seen corresponding path program 1 times [2025-02-08 01:03:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:58,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24957628] [2025-02-08 01:03:58,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:58,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:03:58,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:03:58,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:58,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:58,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:58,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24957628] [2025-02-08 01:03:58,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24957628] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:58,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:58,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:03:58,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510058447] [2025-02-08 01:03:58,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:58,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:03:58,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:58,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:03:58,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:03:58,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2025-02-08 01:03:58,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:58,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:58,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2025-02-08 01:03:58,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:03:59,238 INFO L124 PetriNetUnfolderBase]: 1343/2071 cut-off events. [2025-02-08 01:03:59,239 INFO L125 PetriNetUnfolderBase]: For 1202/1202 co-relation queries the response was YES. [2025-02-08 01:03:59,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 2071 events. 1343/2071 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9214 event pairs, 385 based on Foata normal form. 60/2125 useless extension candidates. Maximal degree in co-relation 5159. Up to 788 conditions per place. [2025-02-08 01:03:59,248 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 61 selfloop transitions, 11 changer transitions 1/78 dead transitions. [2025-02-08 01:03:59,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 380 flow [2025-02-08 01:03:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:03:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:03:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2025-02-08 01:03:59,249 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2025-02-08 01:03:59,249 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 146 flow. Second operand 6 states and 129 transitions. [2025-02-08 01:03:59,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 380 flow [2025-02-08 01:03:59,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 355 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 01:03:59,264 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 160 flow [2025-02-08 01:03:59,264 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2025-02-08 01:03:59,265 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2025-02-08 01:03:59,266 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 160 flow [2025-02-08 01:03:59,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:03:59,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:03:59,266 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:03:59,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:03:59,266 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:03:59,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:03:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1052412996, now seen corresponding path program 1 times [2025-02-08 01:03:59,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:03:59,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816217706] [2025-02-08 01:03:59,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:03:59,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:03:59,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 01:03:59,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:03:59,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:03:59,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:03:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:03:59,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:03:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816217706] [2025-02-08 01:03:59,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816217706] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:03:59,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:03:59,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 01:03:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904317392] [2025-02-08 01:03:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:03:59,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:03:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:03:59,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:03:59,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:03:59,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-02-08 01:03:59,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-02-08 01:03:59,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:03:59,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-02-08 01:03:59,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:00,200 INFO L124 PetriNetUnfolderBase]: 4299/6632 cut-off events. [2025-02-08 01:04:00,200 INFO L125 PetriNetUnfolderBase]: For 5246/5246 co-relation queries the response was YES. [2025-02-08 01:04:00,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17183 conditions, 6632 events. 4299/6632 cut-off events. For 5246/5246 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 36706 event pairs, 703 based on Foata normal form. 32/6662 useless extension candidates. Maximal degree in co-relation 17168. Up to 1536 conditions per place. [2025-02-08 01:04:00,223 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 81 selfloop transitions, 7 changer transitions 103/195 dead transitions. [2025-02-08 01:04:00,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 195 transitions, 1220 flow [2025-02-08 01:04:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 01:04:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-08 01:04:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 279 transitions. [2025-02-08 01:04:00,226 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47692307692307695 [2025-02-08 01:04:00,226 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 160 flow. Second operand 15 states and 279 transitions. [2025-02-08 01:04:00,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 195 transitions, 1220 flow [2025-02-08 01:04:00,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 195 transitions, 899 flow, removed 60 selfloop flow, removed 8 redundant places. [2025-02-08 01:04:00,296 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 178 flow [2025-02-08 01:04:00,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=178, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2025-02-08 01:04:00,297 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2025-02-08 01:04:00,297 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 178 flow [2025-02-08 01:04:00,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-02-08 01:04:00,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:00,297 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:00,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:04:00,297 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:00,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:00,298 INFO L85 PathProgramCache]: Analyzing trace with hash 113134416, now seen corresponding path program 2 times [2025-02-08 01:04:00,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487216104] [2025-02-08 01:04:00,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:04:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:00,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 1 equivalence classes. [2025-02-08 01:04:00,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:04:00,315 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:04:00,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:00,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:00,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487216104] [2025-02-08 01:04:00,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487216104] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:00,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:00,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:04:00,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458931903] [2025-02-08 01:04:00,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:00,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:04:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:00,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:04:00,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:04:00,482 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-02-08 01:04:00,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 44 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-02-08 01:04:00,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:00,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-02-08 01:04:00,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:01,011 INFO L124 PetriNetUnfolderBase]: 4621/7236 cut-off events. [2025-02-08 01:04:01,011 INFO L125 PetriNetUnfolderBase]: For 2941/2941 co-relation queries the response was YES. [2025-02-08 01:04:01,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17893 conditions, 7236 events. 4621/7236 cut-off events. For 2941/2941 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 41584 event pairs, 1271 based on Foata normal form. 16/7251 useless extension candidates. Maximal degree in co-relation 17868. Up to 4200 conditions per place. [2025-02-08 01:04:01,034 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 53 selfloop transitions, 8 changer transitions 45/110 dead transitions. [2025-02-08 01:04:01,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 110 transitions, 616 flow [2025-02-08 01:04:01,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2025-02-08 01:04:01,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2025-02-08 01:04:01,036 INFO L175 Difference]: Start difference. First operand has 72 places, 44 transitions, 178 flow. Second operand 7 states and 140 transitions. [2025-02-08 01:04:01,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 110 transitions, 616 flow [2025-02-08 01:04:01,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 581 flow, removed 16 selfloop flow, removed 11 redundant places. [2025-02-08 01:04:01,045 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 181 flow [2025-02-08 01:04:01,045 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2025-02-08 01:04:01,046 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2025-02-08 01:04:01,046 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 181 flow [2025-02-08 01:04:01,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2025-02-08 01:04:01,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:04:01,046 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:04:01,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:04:01,047 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:04:01,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:04:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash 725604706, now seen corresponding path program 3 times [2025-02-08 01:04:01,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:04:01,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283012327] [2025-02-08 01:04:01,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:04:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:04:01,053 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 1 equivalence classes. [2025-02-08 01:04:01,058 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 01:04:01,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:04:01,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:04:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:04:01,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:04:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283012327] [2025-02-08 01:04:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283012327] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:04:01,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:04:01,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:04:01,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388130062] [2025-02-08 01:04:01,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:04:01,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:04:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:04:01,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:04:01,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:04:01,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2025-02-08 01:04:01,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:04:01,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:04:01,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2025-02-08 01:04:01,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:04:01,505 INFO L124 PetriNetUnfolderBase]: 2089/3291 cut-off events. [2025-02-08 01:04:01,505 INFO L125 PetriNetUnfolderBase]: For 1646/1646 co-relation queries the response was YES. [2025-02-08 01:04:01,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8320 conditions, 3291 events. 2089/3291 cut-off events. For 1646/1646 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15885 event pairs, 850 based on Foata normal form. 16/3306 useless extension candidates. Maximal degree in co-relation 8311. Up to 2845 conditions per place. [2025-02-08 01:04:01,516 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2025-02-08 01:04:01,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 444 flow [2025-02-08 01:04:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:04:01,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:04:01,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2025-02-08 01:04:01,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4468864468864469 [2025-02-08 01:04:01,517 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 181 flow. Second operand 7 states and 122 transitions. [2025-02-08 01:04:01,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 444 flow [2025-02-08 01:04:01,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 432 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-08 01:04:01,521 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2025-02-08 01:04:01,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2025-02-08 01:04:01,523 INFO L279 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2025-02-08 01:04:01,523 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2025-02-08 01:04:01,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:04:01,525 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-02-08 01:04:01,526 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-02-08 01:04:01,526 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 01:04:01,526 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 01:04:01,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:04:01,526 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-02-08 01:04:01,529 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 01:04:01,530 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:04:01,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:04:01 BasicIcfg [2025-02-08 01:04:01,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:04:01,536 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:04:01,536 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:04:01,537 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:04:01,537 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:03:56" (3/4) ... [2025-02-08 01:04:01,539 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:04:01,541 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-08 01:04:01,541 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-08 01:04:01,541 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-08 01:04:01,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-08 01:04:01,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-02-08 01:04:01,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-08 01:04:01,543 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 01:04:01,600 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:04:01,600 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:04:01,600 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:04:01,601 INFO L158 Benchmark]: Toolchain (without parser) took 5340.94ms. Allocated memory was 167.8MB in the beginning and 469.8MB in the end (delta: 302.0MB). Free memory was 132.5MB in the beginning and 267.4MB in the end (delta: -134.9MB). Peak memory consumption was 169.8MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,602 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:04:01,602 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.33ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 112.2MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.12ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 110.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,602 INFO L158 Benchmark]: Boogie Preprocessor took 28.13ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 109.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:04:01,603 INFO L158 Benchmark]: IcfgBuilder took 337.82ms. Allocated memory is still 167.8MB. Free memory was 108.7MB in the beginning and 89.4MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,603 INFO L158 Benchmark]: TraceAbstraction took 4542.54ms. Allocated memory was 167.8MB in the beginning and 469.8MB in the end (delta: 302.0MB). Free memory was 88.7MB in the beginning and 272.5MB in the end (delta: -183.8MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,603 INFO L158 Benchmark]: Witness Printer took 64.18ms. Allocated memory is still 469.8MB. Free memory was 272.5MB in the beginning and 267.4MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:04:01,604 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.33ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 112.2MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.12ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 110.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.13ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 109.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 337.82ms. Allocated memory is still 167.8MB. Free memory was 108.7MB in the beginning and 89.4MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4542.54ms. Allocated memory was 167.8MB in the beginning and 469.8MB in the end (delta: 302.0MB). Free memory was 88.7MB in the beginning and 272.5MB in the end (delta: -183.8MB). Peak memory consumption was 119.5MB. Max. memory is 16.1GB. * Witness Printer took 64.18ms. Allocated memory is still 469.8MB. Free memory was 272.5MB in the beginning and 267.4MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 4 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: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 440 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 434 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 997 IncrementalHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 1 mSDtfsCounter, 997 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=5, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 01:04:01,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE