./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 735b3cc8 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/weaver/parallel-lamport.wvr.c -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 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:03:27,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:03:27,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-14 01:03:27,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:03:27,758 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:03:27,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:03:27,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:03:27,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:03:27,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-14 01:03:27,785 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-14 01:03:27,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:03:27,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:03:27,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:03:27,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:03:27,787 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:03:27,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:03:27,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:03:27,787 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:03:27,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:03:27,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:03:27,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:03:27,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:03:27,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:03:27,788 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:03:27,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:03:27,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:03:27,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:03:27,790 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 -> 7641d1105b9de7b20c96680ae1baa82cbf27158c037dacb66ff49f347bd2fa94 [2025-03-14 01:03:28,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:03:28,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:03:28,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:03:28,039 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:03:28,040 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:03:28,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2025-03-14 01:03:29,180 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a40277a2/0f3414b0215646cc9cd0b2fdff8d06d1/FLAGda600137a [2025-03-14 01:03:29,407 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:03:29,417 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2025-03-14 01:03:29,432 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a40277a2/0f3414b0215646cc9cd0b2fdff8d06d1/FLAGda600137a [2025-03-14 01:03:29,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a40277a2/0f3414b0215646cc9cd0b2fdff8d06d1 [2025-03-14 01:03:29,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:03:29,773 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:03:29,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:03:29,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:03:29,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:03:29,778 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:29,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7290bb65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29, skipping insertion in model container [2025-03-14 01:03:29,779 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:29,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:03:29,913 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/weaver/parallel-lamport.wvr.c[3044,3057] [2025-03-14 01:03:29,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:03:29,927 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:03:29,949 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/weaver/parallel-lamport.wvr.c[3044,3057] [2025-03-14 01:03:29,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:03:29,964 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:03:29,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29 WrapperNode [2025-03-14 01:03:29,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:03:29,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:03:29,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:03:29,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:03:29,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:29,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:29,993 INFO L138 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 204 [2025-03-14 01:03:29,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:03:29,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:03:29,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:03:29,994 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:03:29,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:29,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,011 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-14 01:03:30,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,016 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:03:30,020 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:03:30,020 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:03:30,020 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:03:30,021 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (1/1) ... [2025-03-14 01:03:30,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:03:30,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:30,042 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) [2025-03-14 01:03:30,045 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 [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-14 01:03:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-14 01:03:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-14 01:03:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:03:30,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:03:30,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-14 01:03:30,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-14 01:03:30,060 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:03:30,135 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:03:30,137 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:03:30,376 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:03:30,377 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:03:30,377 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:03:30,549 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:03:30,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:03:30 BoogieIcfgContainer [2025-03-14 01:03:30,550 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:03:30,553 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:03:30,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:03:30,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:03:30,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:03:29" (1/3) ... [2025-03-14 01:03:30,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa206ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:03:30, skipping insertion in model container [2025-03-14 01:03:30,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:03:29" (2/3) ... [2025-03-14 01:03:30,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa206ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:03:30, skipping insertion in model container [2025-03-14 01:03:30,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:03:30" (3/3) ... [2025-03-14 01:03:30,558 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2025-03-14 01:03:30,571 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:03:30,572 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-lamport.wvr.c that has 4 procedures, 60 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-14 01:03:30,572 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:03:30,642 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-14 01:03:30,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 141 flow [2025-03-14 01:03:30,702 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2025-03-14 01:03:30,704 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:03:30,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 1/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2025-03-14 01:03:30,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 60 transitions, 141 flow [2025-03-14 01:03:30,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 130 flow [2025-03-14 01:03:30,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:03:30,727 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;@13a521d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:03:30,728 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-14 01:03:30,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:03:30,744 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2025-03-14 01:03:30,744 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-14 01:03:30,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:30,745 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:30,745 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)] === [2025-03-14 01:03:30,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash 84722432, now seen corresponding path program 1 times [2025-03-14 01:03:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:30,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999097729] [2025-03-14 01:03:30,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:30,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:30,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-14 01:03:30,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-14 01:03:30,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:30,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:31,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:31,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999097729] [2025-03-14 01:03:31,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999097729] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:31,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:31,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:03:31,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88969211] [2025-03-14 01:03:31,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:31,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:03:31,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:31,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:03:31,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:03:31,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-03-14 01:03:31,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2025-03-14 01:03:31,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:31,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-03-14 01:03:31,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:31,678 INFO L124 PetriNetUnfolderBase]: 3049/4663 cut-off events. [2025-03-14 01:03:31,679 INFO L125 PetriNetUnfolderBase]: For 205/205 co-relation queries the response was YES. [2025-03-14 01:03:31,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 4663 events. 3049/4663 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23130 event pairs, 3048 based on Foata normal form. 0/4621 useless extension candidates. Maximal degree in co-relation 9043. Up to 4555 conditions per place. [2025-03-14 01:03:31,708 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 50 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2025-03-14 01:03:31,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 236 flow [2025-03-14 01:03:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:03:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:03:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2025-03-14 01:03:31,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2025-03-14 01:03:31,720 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 130 flow. Second operand 3 states and 77 transitions. [2025-03-14 01:03:31,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 236 flow [2025-03-14 01:03:31,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 224 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-14 01:03:31,731 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 130 flow [2025-03-14 01:03:31,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2025-03-14 01:03:31,735 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -3 predicate places. [2025-03-14 01:03:31,736 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 130 flow [2025-03-14 01:03:31,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2025-03-14 01:03:31,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:31,737 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:31,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:03:31,737 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)] === [2025-03-14 01:03:31,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:31,739 INFO L85 PathProgramCache]: Analyzing trace with hash -458154889, now seen corresponding path program 1 times [2025-03-14 01:03:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:31,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319879096] [2025-03-14 01:03:31,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:03:31,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:31,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-14 01:03:31,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-14 01:03:31,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:31,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:31,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:31,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:31,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319879096] [2025-03-14 01:03:31,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319879096] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:31,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:31,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:03:31,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68225975] [2025-03-14 01:03:31,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:31,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:03:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:31,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:03:31,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:03:31,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-03-14 01:03:31,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:31,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:31,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-03-14 01:03:31,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:32,248 INFO L124 PetriNetUnfolderBase]: 3021/4629 cut-off events. [2025-03-14 01:03:32,249 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2025-03-14 01:03:32,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9276 conditions, 4629 events. 3021/4629 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23042 event pairs, 2414 based on Foata normal form. 28/4623 useless extension candidates. Maximal degree in co-relation 9245. Up to 3630 conditions per place. [2025-03-14 01:03:32,273 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 67 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2025-03-14 01:03:32,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 304 flow [2025-03-14 01:03:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:03:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:03:32,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-03-14 01:03:32,275 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2025-03-14 01:03:32,275 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 130 flow. Second operand 3 states and 93 transitions. [2025-03-14 01:03:32,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 304 flow [2025-03-14 01:03:32,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 300 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-14 01:03:32,277 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 134 flow [2025-03-14 01:03:32,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2025-03-14 01:03:32,278 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2025-03-14 01:03:32,278 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 134 flow [2025-03-14 01:03:32,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:32,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:32,278 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:32,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:03:32,278 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)] === [2025-03-14 01:03:32,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:32,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1462391447, now seen corresponding path program 2 times [2025-03-14 01:03:32,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:32,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629076794] [2025-03-14 01:03:32,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:32,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:32,291 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-03-14 01:03:32,301 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 56 statements. [2025-03-14 01:03:32,301 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:32,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:32,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:32,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629076794] [2025-03-14 01:03:32,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629076794] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:32,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:32,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:03:32,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790922808] [2025-03-14 01:03:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:32,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:03:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:32,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:03:32,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:03:32,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-03-14 01:03:32,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2025-03-14 01:03:32,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:32,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-03-14 01:03:32,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:32,903 INFO L124 PetriNetUnfolderBase]: 3659/5759 cut-off events. [2025-03-14 01:03:32,904 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2025-03-14 01:03:32,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12115 conditions, 5759 events. 3659/5759 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 32308 event pairs, 1074 based on Foata normal form. 98/5854 useless extension candidates. Maximal degree in co-relation 12079. Up to 2617 conditions per place. [2025-03-14 01:03:32,932 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 95 selfloop transitions, 7 changer transitions 1/108 dead transitions. [2025-03-14 01:03:32,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 459 flow [2025-03-14 01:03:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:03:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:03:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2025-03-14 01:03:32,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48 [2025-03-14 01:03:32,937 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 134 flow. Second operand 5 states and 144 transitions. [2025-03-14 01:03:32,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 459 flow [2025-03-14 01:03:32,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:03:32,940 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 172 flow [2025-03-14 01:03:32,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2025-03-14 01:03:32,941 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 4 predicate places. [2025-03-14 01:03:32,941 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 172 flow [2025-03-14 01:03:32,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2025-03-14 01:03:32,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:32,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:32,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:03:32,943 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)] === [2025-03-14 01:03:32,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:32,944 INFO L85 PathProgramCache]: Analyzing trace with hash 546372349, now seen corresponding path program 3 times [2025-03-14 01:03:32,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:32,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851130304] [2025-03-14 01:03:32,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:32,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:32,956 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 2 equivalence classes. [2025-03-14 01:03:32,974 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 56 statements. [2025-03-14 01:03:32,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:03:32,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:33,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:33,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851130304] [2025-03-14 01:03:33,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851130304] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:33,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-14 01:03:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923784126] [2025-03-14 01:03:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:33,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:03:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:33,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:03:33,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:03:33,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-03-14 01:03:33,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:33,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:33,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-03-14 01:03:33,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:33,376 INFO L124 PetriNetUnfolderBase]: 3503/5451 cut-off events. [2025-03-14 01:03:33,376 INFO L125 PetriNetUnfolderBase]: For 1321/1321 co-relation queries the response was YES. [2025-03-14 01:03:33,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12529 conditions, 5451 events. 3503/5451 cut-off events. For 1321/1321 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 28928 event pairs, 2656 based on Foata normal form. 28/5448 useless extension candidates. Maximal degree in co-relation 12489. Up to 4404 conditions per place. [2025-03-14 01:03:33,398 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 73 selfloop transitions, 2 changer transitions 1/81 dead transitions. [2025-03-14 01:03:33,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 381 flow [2025-03-14 01:03:33,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:03:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:03:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2025-03-14 01:03:33,399 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-03-14 01:03:33,399 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 172 flow. Second operand 3 states and 94 transitions. [2025-03-14 01:03:33,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 381 flow [2025-03-14 01:03:33,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:03:33,412 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 176 flow [2025-03-14 01:03:33,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2025-03-14 01:03:33,413 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 6 predicate places. [2025-03-14 01:03:33,413 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 176 flow [2025-03-14 01:03:33,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:03:33,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:33,414 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:33,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:03:33,414 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)] === [2025-03-14 01:03:33,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash 487079021, now seen corresponding path program 4 times [2025-03-14 01:03:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423870456] [2025-03-14 01:03:33,415 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:33,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:33,427 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-03-14 01:03:33,449 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 56 statements. [2025-03-14 01:03:33,449 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:03:33,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423870456] [2025-03-14 01:03:33,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423870456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:33,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:33,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:33,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955466969] [2025-03-14 01:03:33,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:33,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:03:33,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:33,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:03:33,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:03:33,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:03:33,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 176 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:03:33,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:33,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:03:33,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:35,784 INFO L124 PetriNetUnfolderBase]: 7521/11377 cut-off events. [2025-03-14 01:03:35,784 INFO L125 PetriNetUnfolderBase]: For 3887/3887 co-relation queries the response was YES. [2025-03-14 01:03:35,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26614 conditions, 11377 events. 7521/11377 cut-off events. For 3887/3887 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 64549 event pairs, 899 based on Foata normal form. 1/11374 useless extension candidates. Maximal degree in co-relation 26573. Up to 5188 conditions per place. [2025-03-14 01:03:35,818 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 393 selfloop transitions, 116 changer transitions 31/543 dead transitions. [2025-03-14 01:03:35,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 543 transitions, 2752 flow [2025-03-14 01:03:35,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-03-14 01:03:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2025-03-14 01:03:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 749 transitions. [2025-03-14 01:03:35,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3120833333333333 [2025-03-14 01:03:35,821 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 176 flow. Second operand 40 states and 749 transitions. [2025-03-14 01:03:35,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 543 transitions, 2752 flow [2025-03-14 01:03:35,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 543 transitions, 2688 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:03:35,829 INFO L231 Difference]: Finished difference. Result has 139 places, 183 transitions, 934 flow [2025-03-14 01:03:35,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=934, PETRI_PLACES=139, PETRI_TRANSITIONS=183} [2025-03-14 01:03:35,829 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 74 predicate places. [2025-03-14 01:03:35,830 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 183 transitions, 934 flow [2025-03-14 01:03:35,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:03:35,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:35,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:35,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 01:03:35,830 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)] === [2025-03-14 01:03:35,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:35,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1970018469, now seen corresponding path program 5 times [2025-03-14 01:03:35,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:35,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23220081] [2025-03-14 01:03:35,831 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:35,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:35,838 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-03-14 01:03:35,846 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-03-14 01:03:35,846 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:35,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:35,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:35,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:35,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23220081] [2025-03-14 01:03:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23220081] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:35,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:35,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:03:35,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361827063] [2025-03-14 01:03:35,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:35,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:03:35,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:35,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:03:35,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:03:35,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 60 [2025-03-14 01:03:35,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 183 transitions, 934 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2025-03-14 01:03:35,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:35,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 60 [2025-03-14 01:03:35,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:36,544 INFO L124 PetriNetUnfolderBase]: 4610/7399 cut-off events. [2025-03-14 01:03:36,545 INFO L125 PetriNetUnfolderBase]: For 19304/19318 co-relation queries the response was YES. [2025-03-14 01:03:36,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25469 conditions, 7399 events. 4610/7399 cut-off events. For 19304/19318 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 43968 event pairs, 1113 based on Foata normal form. 94/7476 useless extension candidates. Maximal degree in co-relation 25393. Up to 3133 conditions per place. [2025-03-14 01:03:36,587 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 200 selfloop transitions, 9 changer transitions 4/222 dead transitions. [2025-03-14 01:03:36,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 222 transitions, 1507 flow [2025-03-14 01:03:36,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:03:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:03:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2025-03-14 01:03:36,588 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4633333333333333 [2025-03-14 01:03:36,588 INFO L175 Difference]: Start difference. First operand has 139 places, 183 transitions, 934 flow. Second operand 5 states and 139 transitions. [2025-03-14 01:03:36,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 222 transitions, 1507 flow [2025-03-14 01:03:36,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 222 transitions, 1406 flow, removed 35 selfloop flow, removed 15 redundant places. [2025-03-14 01:03:36,668 INFO L231 Difference]: Finished difference. Result has 117 places, 124 transitions, 566 flow [2025-03-14 01:03:36,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=566, PETRI_PLACES=117, PETRI_TRANSITIONS=124} [2025-03-14 01:03:36,670 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 52 predicate places. [2025-03-14 01:03:36,670 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 124 transitions, 566 flow [2025-03-14 01:03:36,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2025-03-14 01:03:36,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:36,671 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:36,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 01:03:36,671 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:03:36,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2099462993, now seen corresponding path program 6 times [2025-03-14 01:03:36,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:36,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122497442] [2025-03-14 01:03:36,672 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:36,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:36,685 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 56 statements into 2 equivalence classes. [2025-03-14 01:03:36,715 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 56 statements. [2025-03-14 01:03:36,715 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:36,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122497442] [2025-03-14 01:03:36,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122497442] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:36,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:36,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:36,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378324645] [2025-03-14 01:03:36,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:36,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:03:36,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:36,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:03:36,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:03:37,009 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:03:37,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 124 transitions, 566 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:03:37,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:37,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:03:37,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:38,426 INFO L124 PetriNetUnfolderBase]: 5605/8736 cut-off events. [2025-03-14 01:03:38,426 INFO L125 PetriNetUnfolderBase]: For 9417/9417 co-relation queries the response was YES. [2025-03-14 01:03:38,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27582 conditions, 8736 events. 5605/8736 cut-off events. For 9417/9417 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 49472 event pairs, 1139 based on Foata normal form. 1/8734 useless extension candidates. Maximal degree in co-relation 27518. Up to 5602 conditions per place. [2025-03-14 01:03:38,473 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 204 selfloop transitions, 47 changer transitions 74/328 dead transitions. [2025-03-14 01:03:38,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 328 transitions, 2182 flow [2025-03-14 01:03:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-14 01:03:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-14 01:03:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 416 transitions. [2025-03-14 01:03:38,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2773333333333333 [2025-03-14 01:03:38,475 INFO L175 Difference]: Start difference. First operand has 117 places, 124 transitions, 566 flow. Second operand 25 states and 416 transitions. [2025-03-14 01:03:38,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 328 transitions, 2182 flow [2025-03-14 01:03:38,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 328 transitions, 2138 flow, removed 13 selfloop flow, removed 1 redundant places. [2025-03-14 01:03:38,524 INFO L231 Difference]: Finished difference. Result has 151 places, 131 transitions, 732 flow [2025-03-14 01:03:38,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=732, PETRI_PLACES=151, PETRI_TRANSITIONS=131} [2025-03-14 01:03:38,524 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 86 predicate places. [2025-03-14 01:03:38,525 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 131 transitions, 732 flow [2025-03-14 01:03:38,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:03:38,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:38,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:38,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 01:03:38,526 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:03:38,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1000104851, now seen corresponding path program 7 times [2025-03-14 01:03:38,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:38,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811158046] [2025-03-14 01:03:38,526 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:38,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-14 01:03:38,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-14 01:03:38,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:38,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:38,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:38,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811158046] [2025-03-14 01:03:38,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811158046] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:38,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120712138] [2025-03-14 01:03:38,930 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:38,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:38,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:38,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:38,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-14 01:03:38,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-14 01:03:39,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-14 01:03:39,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:39,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:39,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-14 01:03:39,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:39,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-14 01:03:39,322 INFO L349 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2025-03-14 01:03:39,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 22 [2025-03-14 01:03:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:39,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:39,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 64 [2025-03-14 01:03:40,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:40,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 129 [2025-03-14 01:03:40,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 66 [2025-03-14 01:03:40,184 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2025-03-14 01:03:40,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 1 [2025-03-14 01:03:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120712138] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-14 01:03:40,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-14 01:03:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 25 [2025-03-14 01:03:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635519930] [2025-03-14 01:03:40,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-14 01:03:40,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-14 01:03:40,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:40,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-14 01:03:40,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-03-14 01:03:40,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 60 [2025-03-14 01:03:40,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 131 transitions, 732 flow. Second operand has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 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) [2025-03-14 01:03:40,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:40,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 60 [2025-03-14 01:03:40,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:43,015 INFO L124 PetriNetUnfolderBase]: 10632/16655 cut-off events. [2025-03-14 01:03:43,016 INFO L125 PetriNetUnfolderBase]: For 32361/32385 co-relation queries the response was YES. [2025-03-14 01:03:43,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58321 conditions, 16655 events. 10632/16655 cut-off events. For 32361/32385 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 107509 event pairs, 2016 based on Foata normal form. 14/16654 useless extension candidates. Maximal degree in co-relation 58278. Up to 6959 conditions per place. [2025-03-14 01:03:43,092 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 128 selfloop transitions, 16 changer transitions 412/562 dead transitions. [2025-03-14 01:03:43,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 562 transitions, 4067 flow [2025-03-14 01:03:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-14 01:03:43,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-14 01:03:43,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 564 transitions. [2025-03-14 01:03:43,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32413793103448274 [2025-03-14 01:03:43,097 INFO L175 Difference]: Start difference. First operand has 151 places, 131 transitions, 732 flow. Second operand 29 states and 564 transitions. [2025-03-14 01:03:43,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 562 transitions, 4067 flow [2025-03-14 01:03:43,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 562 transitions, 3791 flow, removed 54 selfloop flow, removed 19 redundant places. [2025-03-14 01:03:43,280 INFO L231 Difference]: Finished difference. Result has 172 places, 132 transitions, 904 flow [2025-03-14 01:03:43,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=904, PETRI_PLACES=172, PETRI_TRANSITIONS=132} [2025-03-14 01:03:43,281 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 107 predicate places. [2025-03-14 01:03:43,281 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 132 transitions, 904 flow [2025-03-14 01:03:43,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.24) internal successors, (306), 25 states have internal predecessors, (306), 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) [2025-03-14 01:03:43,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:43,281 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:43,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-14 01:03:43,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:43,486 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:03:43,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1950638496, now seen corresponding path program 8 times [2025-03-14 01:03:43,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:43,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181559423] [2025-03-14 01:03:43,487 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:03:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:43,496 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:03:43,515 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:03:43,519 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:03:43,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:03:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:43,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181559423] [2025-03-14 01:03:43,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181559423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:43,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:43,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:03:43,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54621994] [2025-03-14 01:03:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:43,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:43,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:43,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:43,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:03:43,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:03:43,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 132 transitions, 904 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:03:43,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:43,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:03:43,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:45,335 INFO L124 PetriNetUnfolderBase]: 6183/9660 cut-off events. [2025-03-14 01:03:45,336 INFO L125 PetriNetUnfolderBase]: For 66406/66406 co-relation queries the response was YES. [2025-03-14 01:03:45,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43946 conditions, 9660 events. 6183/9660 cut-off events. For 66406/66406 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 56441 event pairs, 1216 based on Foata normal form. 1/9658 useless extension candidates. Maximal degree in co-relation 43848. Up to 5865 conditions per place. [2025-03-14 01:03:45,392 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 273 selfloop transitions, 29 changer transitions 90/395 dead transitions. [2025-03-14 01:03:45,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 395 transitions, 3518 flow [2025-03-14 01:03:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-14 01:03:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-14 01:03:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 460 transitions. [2025-03-14 01:03:45,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2839506172839506 [2025-03-14 01:03:45,395 INFO L175 Difference]: Start difference. First operand has 172 places, 132 transitions, 904 flow. Second operand 27 states and 460 transitions. [2025-03-14 01:03:45,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 395 transitions, 3518 flow [2025-03-14 01:03:45,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 395 transitions, 3138 flow, removed 186 selfloop flow, removed 14 redundant places. [2025-03-14 01:03:45,572 INFO L231 Difference]: Finished difference. Result has 187 places, 144 transitions, 1037 flow [2025-03-14 01:03:45,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1037, PETRI_PLACES=187, PETRI_TRANSITIONS=144} [2025-03-14 01:03:45,573 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 122 predicate places. [2025-03-14 01:03:45,573 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 144 transitions, 1037 flow [2025-03-14 01:03:45,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:03:45,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:45,574 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:45,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-14 01:03:45,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:03:45,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:45,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2016074742, now seen corresponding path program 9 times [2025-03-14 01:03:45,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:45,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962929899] [2025-03-14 01:03:45,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:03:45,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:45,583 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:03:45,596 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:03:45,596 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:03:45,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:03:45,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:45,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962929899] [2025-03-14 01:03:45,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962929899] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:45,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:45,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:45,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079624343] [2025-03-14 01:03:45,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:45,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:03:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:45,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:03:45,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:03:45,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:03:45,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 144 transitions, 1037 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:03:45,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:45,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:03:45,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:47,901 INFO L124 PetriNetUnfolderBase]: 6788/10637 cut-off events. [2025-03-14 01:03:47,901 INFO L125 PetriNetUnfolderBase]: For 95638/95638 co-relation queries the response was YES. [2025-03-14 01:03:47,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51846 conditions, 10637 events. 6788/10637 cut-off events. For 95638/95638 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 62946 event pairs, 1875 based on Foata normal form. 1/10635 useless extension candidates. Maximal degree in co-relation 51767. Up to 6759 conditions per place. [2025-03-14 01:03:47,958 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 268 selfloop transitions, 58 changer transitions 92/421 dead transitions. [2025-03-14 01:03:47,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 421 transitions, 3728 flow [2025-03-14 01:03:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-14 01:03:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-03-14 01:03:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 537 transitions. [2025-03-14 01:03:47,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27121212121212124 [2025-03-14 01:03:47,960 INFO L175 Difference]: Start difference. First operand has 187 places, 144 transitions, 1037 flow. Second operand 33 states and 537 transitions. [2025-03-14 01:03:47,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 421 transitions, 3728 flow [2025-03-14 01:03:48,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 421 transitions, 3349 flow, removed 184 selfloop flow, removed 18 redundant places. [2025-03-14 01:03:48,216 INFO L231 Difference]: Finished difference. Result has 205 places, 151 transitions, 1215 flow [2025-03-14 01:03:48,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1215, PETRI_PLACES=205, PETRI_TRANSITIONS=151} [2025-03-14 01:03:48,216 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 140 predicate places. [2025-03-14 01:03:48,217 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 151 transitions, 1215 flow [2025-03-14 01:03:48,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:03:48,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:48,217 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:48,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-14 01:03:48,220 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:03:48,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1399028704, now seen corresponding path program 10 times [2025-03-14 01:03:48,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:48,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863685959] [2025-03-14 01:03:48,221 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:03:48,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:48,227 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:03:48,235 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 57 statements. [2025-03-14 01:03:48,236 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:03:48,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:03:48,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863685959] [2025-03-14 01:03:48,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863685959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:48,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:03:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930575387] [2025-03-14 01:03:48,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:48,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:03:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:48,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:03:48,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:03:48,389 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:03:48,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 151 transitions, 1215 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:03:48,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:48,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:03:48,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:50,077 INFO L124 PetriNetUnfolderBase]: 6744/10577 cut-off events. [2025-03-14 01:03:50,077 INFO L125 PetriNetUnfolderBase]: For 76238/76238 co-relation queries the response was YES. [2025-03-14 01:03:50,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50313 conditions, 10577 events. 6744/10577 cut-off events. For 76238/76238 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 62654 event pairs, 1923 based on Foata normal form. 1/10575 useless extension candidates. Maximal degree in co-relation 50233. Up to 7080 conditions per place. [2025-03-14 01:03:50,150 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 238 selfloop transitions, 60 changer transitions 89/390 dead transitions. [2025-03-14 01:03:50,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 390 transitions, 3446 flow [2025-03-14 01:03:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-14 01:03:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2025-03-14 01:03:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 505 transitions. [2025-03-14 01:03:50,152 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2630208333333333 [2025-03-14 01:03:50,152 INFO L175 Difference]: Start difference. First operand has 205 places, 151 transitions, 1215 flow. Second operand 32 states and 505 transitions. [2025-03-14 01:03:50,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 390 transitions, 3446 flow [2025-03-14 01:03:50,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 390 transitions, 3124 flow, removed 106 selfloop flow, removed 26 redundant places. [2025-03-14 01:03:50,383 INFO L231 Difference]: Finished difference. Result has 208 places, 155 transitions, 1285 flow [2025-03-14 01:03:50,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1285, PETRI_PLACES=208, PETRI_TRANSITIONS=155} [2025-03-14 01:03:50,384 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 143 predicate places. [2025-03-14 01:03:50,384 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 155 transitions, 1285 flow [2025-03-14 01:03:50,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:03:50,384 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:50,384 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:50,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-14 01:03:50,384 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:03:50,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1549713916, now seen corresponding path program 11 times [2025-03-14 01:03:50,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305396829] [2025-03-14 01:03:50,385 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:50,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:50,390 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:03:50,418 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:03:50,418 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:50,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:51,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305396829] [2025-03-14 01:03:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305396829] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220616089] [2025-03-14 01:03:51,726 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:03:51,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:51,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:51,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:51,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-14 01:03:51,788 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:03:51,811 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:03:51,812 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:03:51,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:51,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-14 01:03:51,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:52,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:52,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-14 01:03:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:52,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:52,273 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-03-14 01:03:52,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-03-14 01:03:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:03:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220616089] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:52,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:52,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 13] total 33 [2025-03-14 01:03:52,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742789560] [2025-03-14 01:03:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:52,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:52,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:52,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:52,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=975, Unknown=0, NotChecked=0, Total=1056 [2025-03-14 01:03:52,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:03:52,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 155 transitions, 1285 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:03:52,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:52,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:03:52,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:54,024 INFO L124 PetriNetUnfolderBase]: 6512/10201 cut-off events. [2025-03-14 01:03:54,024 INFO L125 PetriNetUnfolderBase]: For 59456/59456 co-relation queries the response was YES. [2025-03-14 01:03:54,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47250 conditions, 10201 events. 6512/10201 cut-off events. For 59456/59456 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 59938 event pairs, 1835 based on Foata normal form. 1/10199 useless extension candidates. Maximal degree in co-relation 47137. Up to 7457 conditions per place. [2025-03-14 01:03:54,087 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 217 selfloop transitions, 46 changer transitions 69/335 dead transitions. [2025-03-14 01:03:54,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 335 transitions, 3053 flow [2025-03-14 01:03:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-14 01:03:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-14 01:03:54,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 383 transitions. [2025-03-14 01:03:54,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27753623188405796 [2025-03-14 01:03:54,088 INFO L175 Difference]: Start difference. First operand has 208 places, 155 transitions, 1285 flow. Second operand 23 states and 383 transitions. [2025-03-14 01:03:54,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 335 transitions, 3053 flow [2025-03-14 01:03:54,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 335 transitions, 2715 flow, removed 117 selfloop flow, removed 26 redundant places. [2025-03-14 01:03:54,253 INFO L231 Difference]: Finished difference. Result has 199 places, 156 transitions, 1235 flow [2025-03-14 01:03:54,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1235, PETRI_PLACES=199, PETRI_TRANSITIONS=156} [2025-03-14 01:03:54,254 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 134 predicate places. [2025-03-14 01:03:54,254 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 156 transitions, 1235 flow [2025-03-14 01:03:54,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:03:54,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:54,254 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:54,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-14 01:03:54,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-14 01:03:54,455 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:03:54,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:54,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1022473984, now seen corresponding path program 12 times [2025-03-14 01:03:54,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:54,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824255614] [2025-03-14 01:03:54,456 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:03:54,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:54,463 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:03:54,471 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:03:54,471 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:03:54,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:03:54,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:54,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824255614] [2025-03-14 01:03:54,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824255614] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:03:54,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:03:54,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:03:54,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474461779] [2025-03-14 01:03:54,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:54,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:54,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:54,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:54,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:03:54,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:03:54,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 156 transitions, 1235 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:03:54,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:54,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:03:54,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:03:56,446 INFO L124 PetriNetUnfolderBase]: 6416/10069 cut-off events. [2025-03-14 01:03:56,446 INFO L125 PetriNetUnfolderBase]: For 50127/50127 co-relation queries the response was YES. [2025-03-14 01:03:56,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45445 conditions, 10069 events. 6416/10069 cut-off events. For 50127/50127 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 59210 event pairs, 1794 based on Foata normal form. 1/10067 useless extension candidates. Maximal degree in co-relation 45371. Up to 7457 conditions per place. [2025-03-14 01:03:56,522 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 228 selfloop transitions, 52 changer transitions 56/339 dead transitions. [2025-03-14 01:03:56,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 339 transitions, 2938 flow [2025-03-14 01:03:56,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-14 01:03:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-14 01:03:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 399 transitions. [2025-03-14 01:03:56,524 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.266 [2025-03-14 01:03:56,525 INFO L175 Difference]: Start difference. First operand has 199 places, 156 transitions, 1235 flow. Second operand 25 states and 399 transitions. [2025-03-14 01:03:56,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 339 transitions, 2938 flow [2025-03-14 01:03:56,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 339 transitions, 2719 flow, removed 76 selfloop flow, removed 14 redundant places. [2025-03-14 01:03:56,701 INFO L231 Difference]: Finished difference. Result has 203 places, 162 transitions, 1333 flow [2025-03-14 01:03:56,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1333, PETRI_PLACES=203, PETRI_TRANSITIONS=162} [2025-03-14 01:03:56,702 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 138 predicate places. [2025-03-14 01:03:56,702 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 162 transitions, 1333 flow [2025-03-14 01:03:56,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:03:56,702 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:03:56,702 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:03:56,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-14 01:03:56,702 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:03:56,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:03:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash 47045022, now seen corresponding path program 13 times [2025-03-14 01:03:56,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:03:56,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667263896] [2025-03-14 01:03:56,703 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:56,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:03:56,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-14 01:03:56,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:03:56,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:56,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:03:58,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:03:58,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667263896] [2025-03-14 01:03:58,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667263896] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:58,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645065667] [2025-03-14 01:03:58,526 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:03:58,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:03:58,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:03:58,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:03:58,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-14 01:03:58,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-14 01:03:58,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:03:58,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:03:58,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:03:58,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-14 01:03:58,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:03:58,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:03:58,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-14 01:03:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:03:58,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:03:59,075 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-03-14 01:03:59,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-03-14 01:03:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:03:59,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645065667] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:03:59,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:03:59,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18, 13] total 34 [2025-03-14 01:03:59,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514885083] [2025-03-14 01:03:59,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:03:59,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:03:59,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:03:59,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:03:59,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2025-03-14 01:03:59,138 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:03:59,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 162 transitions, 1333 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:03:59,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:03:59,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:03:59,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:00,631 INFO L124 PetriNetUnfolderBase]: 6124/9620 cut-off events. [2025-03-14 01:04:00,631 INFO L125 PetriNetUnfolderBase]: For 44814/44814 co-relation queries the response was YES. [2025-03-14 01:04:00,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43181 conditions, 9620 events. 6124/9620 cut-off events. For 44814/44814 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 56088 event pairs, 1763 based on Foata normal form. 1/9618 useless extension candidates. Maximal degree in co-relation 43069. Up to 7358 conditions per place. [2025-03-14 01:04:00,691 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 228 selfloop transitions, 46 changer transitions 27/304 dead transitions. [2025-03-14 01:04:00,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 304 transitions, 2633 flow [2025-03-14 01:04:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-14 01:04:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-14 01:04:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 335 transitions. [2025-03-14 01:04:00,693 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2791666666666667 [2025-03-14 01:04:00,693 INFO L175 Difference]: Start difference. First operand has 203 places, 162 transitions, 1333 flow. Second operand 20 states and 335 transitions. [2025-03-14 01:04:00,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 304 transitions, 2633 flow [2025-03-14 01:04:00,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 304 transitions, 2463 flow, removed 45 selfloop flow, removed 15 redundant places. [2025-03-14 01:04:00,805 INFO L231 Difference]: Finished difference. Result has 204 places, 159 transitions, 1250 flow [2025-03-14 01:04:00,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1250, PETRI_PLACES=204, PETRI_TRANSITIONS=159} [2025-03-14 01:04:00,806 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 139 predicate places. [2025-03-14 01:04:00,806 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 159 transitions, 1250 flow [2025-03-14 01:04:00,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:00,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:00,806 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:00,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-14 01:04:01,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:01,007 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:01,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash 951480446, now seen corresponding path program 14 times [2025-03-14 01:04:01,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:01,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859119858] [2025-03-14 01:04:01,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:01,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:01,013 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:01,022 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:01,023 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:04:01,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:01,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:01,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:01,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859119858] [2025-03-14 01:04:01,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859119858] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:01,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:01,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:04:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315921635] [2025-03-14 01:04:01,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:01,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:01,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:01,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:01,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:01,193 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:01,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 159 transitions, 1250 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:01,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:01,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:01,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:02,375 INFO L124 PetriNetUnfolderBase]: 6059/9491 cut-off events. [2025-03-14 01:04:02,375 INFO L125 PetriNetUnfolderBase]: For 43686/43686 co-relation queries the response was YES. [2025-03-14 01:04:02,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42500 conditions, 9491 events. 6059/9491 cut-off events. For 43686/43686 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 55102 event pairs, 1775 based on Foata normal form. 1/9489 useless extension candidates. Maximal degree in co-relation 42428. Up to 7358 conditions per place. [2025-03-14 01:04:02,444 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 174 selfloop transitions, 36 changer transitions 73/286 dead transitions. [2025-03-14 01:04:02,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 286 transitions, 2443 flow [2025-03-14 01:04:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-14 01:04:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-14 01:04:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 302 transitions. [2025-03-14 01:04:02,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.296078431372549 [2025-03-14 01:04:02,445 INFO L175 Difference]: Start difference. First operand has 204 places, 159 transitions, 1250 flow. Second operand 17 states and 302 transitions. [2025-03-14 01:04:02,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 286 transitions, 2443 flow [2025-03-14 01:04:02,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 286 transitions, 2317 flow, removed 16 selfloop flow, removed 19 redundant places. [2025-03-14 01:04:02,576 INFO L231 Difference]: Finished difference. Result has 195 places, 145 transitions, 1132 flow [2025-03-14 01:04:02,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1132, PETRI_PLACES=195, PETRI_TRANSITIONS=145} [2025-03-14 01:04:02,577 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 130 predicate places. [2025-03-14 01:04:02,577 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 145 transitions, 1132 flow [2025-03-14 01:04:02,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:02,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:02,577 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:02,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-14 01:04:02,577 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:02,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:02,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1996228612, now seen corresponding path program 15 times [2025-03-14 01:04:02,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:02,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724697884] [2025-03-14 01:04:02,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:04:02,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:02,583 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:02,593 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:02,593 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:04:02,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724697884] [2025-03-14 01:04:02,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724697884] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:02,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:02,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:04:02,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496731977] [2025-03-14 01:04:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:02,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:04:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:02,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:04:02,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:04:02,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:02,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 145 transitions, 1132 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:02,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:02,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:02,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:04,041 INFO L124 PetriNetUnfolderBase]: 7003/10930 cut-off events. [2025-03-14 01:04:04,041 INFO L125 PetriNetUnfolderBase]: For 48881/48881 co-relation queries the response was YES. [2025-03-14 01:04:04,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48490 conditions, 10930 events. 7003/10930 cut-off events. For 48881/48881 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 64984 event pairs, 1921 based on Foata normal form. 1/10928 useless extension candidates. Maximal degree in co-relation 48431. Up to 7256 conditions per place. [2025-03-14 01:04:04,112 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 238 selfloop transitions, 68 changer transitions 53/362 dead transitions. [2025-03-14 01:04:04,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 362 transitions, 3123 flow [2025-03-14 01:04:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-14 01:04:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-14 01:04:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 434 transitions. [2025-03-14 01:04:04,113 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2782051282051282 [2025-03-14 01:04:04,113 INFO L175 Difference]: Start difference. First operand has 195 places, 145 transitions, 1132 flow. Second operand 26 states and 434 transitions. [2025-03-14 01:04:04,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 362 transitions, 3123 flow [2025-03-14 01:04:04,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 362 transitions, 2898 flow, removed 38 selfloop flow, removed 14 redundant places. [2025-03-14 01:04:04,278 INFO L231 Difference]: Finished difference. Result has 195 places, 165 transitions, 1407 flow [2025-03-14 01:04:04,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1407, PETRI_PLACES=195, PETRI_TRANSITIONS=165} [2025-03-14 01:04:04,279 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 130 predicate places. [2025-03-14 01:04:04,279 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 165 transitions, 1407 flow [2025-03-14 01:04:04,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:04,279 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:04,279 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:04,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-14 01:04:04,279 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:04,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:04,279 INFO L85 PathProgramCache]: Analyzing trace with hash 89392766, now seen corresponding path program 16 times [2025-03-14 01:04:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:04,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891079768] [2025-03-14 01:04:04,280 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:04:04,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:04,285 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:04,288 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 57 statements. [2025-03-14 01:04:04,288 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:04:04,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891079768] [2025-03-14 01:04:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891079768] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:04,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:04,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:04:04,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672871355] [2025-03-14 01:04:04,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:04,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:04:04,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:04,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:04:04,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:04:04,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:04,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 165 transitions, 1407 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:04,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:04,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:04,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:06,182 INFO L124 PetriNetUnfolderBase]: 7384/11584 cut-off events. [2025-03-14 01:04:06,182 INFO L125 PetriNetUnfolderBase]: For 57137/57137 co-relation queries the response was YES. [2025-03-14 01:04:06,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52600 conditions, 11584 events. 7384/11584 cut-off events. For 57137/57137 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 70610 event pairs, 1815 based on Foata normal form. 1/11582 useless extension candidates. Maximal degree in co-relation 52536. Up to 7065 conditions per place. [2025-03-14 01:04:06,237 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 282 selfloop transitions, 64 changer transitions 93/442 dead transitions. [2025-03-14 01:04:06,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 442 transitions, 3897 flow [2025-03-14 01:04:06,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-14 01:04:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-03-14 01:04:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 540 transitions. [2025-03-14 01:04:06,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2025-03-14 01:04:06,239 INFO L175 Difference]: Start difference. First operand has 195 places, 165 transitions, 1407 flow. Second operand 33 states and 540 transitions. [2025-03-14 01:04:06,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 442 transitions, 3897 flow [2025-03-14 01:04:06,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 442 transitions, 3641 flow, removed 79 selfloop flow, removed 18 redundant places. [2025-03-14 01:04:06,432 INFO L231 Difference]: Finished difference. Result has 222 places, 169 transitions, 1475 flow [2025-03-14 01:04:06,432 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1475, PETRI_PLACES=222, PETRI_TRANSITIONS=169} [2025-03-14 01:04:06,432 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 157 predicate places. [2025-03-14 01:04:06,432 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 169 transitions, 1475 flow [2025-03-14 01:04:06,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:06,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:06,432 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:06,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-14 01:04:06,433 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:06,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2041884340, now seen corresponding path program 17 times [2025-03-14 01:04:06,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:06,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141465590] [2025-03-14 01:04:06,433 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:06,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:06,438 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:06,453 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:06,453 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:06,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:07,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:07,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141465590] [2025-03-14 01:04:07,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141465590] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:07,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2866027] [2025-03-14 01:04:07,047 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:07,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:07,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:07,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:07,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-14 01:04:07,098 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:07,123 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:07,123 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:07,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:07,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-14 01:04:07,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:07,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:04:07,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-14 01:04:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:07,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:07,541 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-03-14 01:04:07,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-03-14 01:04:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:07,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2866027] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:07,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:07,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16, 13] total 31 [2025-03-14 01:04:07,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449130173] [2025-03-14 01:04:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:07,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:07,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:07,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2025-03-14 01:04:07,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:07,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 169 transitions, 1475 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:07,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:07,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:07,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:09,412 INFO L124 PetriNetUnfolderBase]: 7184/11260 cut-off events. [2025-03-14 01:04:09,412 INFO L125 PetriNetUnfolderBase]: For 77888/77888 co-relation queries the response was YES. [2025-03-14 01:04:09,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54253 conditions, 11260 events. 7184/11260 cut-off events. For 77888/77888 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 67411 event pairs, 2057 based on Foata normal form. 1/11258 useless extension candidates. Maximal degree in co-relation 54179. Up to 8071 conditions per place. [2025-03-14 01:04:09,480 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 271 selfloop transitions, 78 changer transitions 30/382 dead transitions. [2025-03-14 01:04:09,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 382 transitions, 3439 flow [2025-03-14 01:04:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-14 01:04:09,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-14 01:04:09,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 464 transitions. [2025-03-14 01:04:09,481 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2577777777777778 [2025-03-14 01:04:09,481 INFO L175 Difference]: Start difference. First operand has 222 places, 169 transitions, 1475 flow. Second operand 30 states and 464 transitions. [2025-03-14 01:04:09,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 382 transitions, 3439 flow [2025-03-14 01:04:09,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 382 transitions, 3194 flow, removed 63 selfloop flow, removed 29 redundant places. [2025-03-14 01:04:09,784 INFO L231 Difference]: Finished difference. Result has 218 places, 194 transitions, 1803 flow [2025-03-14 01:04:09,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1803, PETRI_PLACES=218, PETRI_TRANSITIONS=194} [2025-03-14 01:04:09,784 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 153 predicate places. [2025-03-14 01:04:09,784 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 194 transitions, 1803 flow [2025-03-14 01:04:09,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:09,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:09,785 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:09,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-14 01:04:09,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-14 01:04:09,985 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:09,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:09,986 INFO L85 PathProgramCache]: Analyzing trace with hash 544996204, now seen corresponding path program 18 times [2025-03-14 01:04:09,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:09,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031156292] [2025-03-14 01:04:09,986 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:04:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:09,992 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:10,000 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:10,000 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:04:10,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:10,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031156292] [2025-03-14 01:04:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031156292] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:10,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:10,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:04:10,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469828296] [2025-03-14 01:04:10,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:10,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:04:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:10,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:04:10,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:04:10,147 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:10,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 194 transitions, 1803 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:10,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:10,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:10,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:12,013 INFO L124 PetriNetUnfolderBase]: 7657/12034 cut-off events. [2025-03-14 01:04:12,013 INFO L125 PetriNetUnfolderBase]: For 66660/66660 co-relation queries the response was YES. [2025-03-14 01:04:12,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57237 conditions, 12034 events. 7657/12034 cut-off events. For 66660/66660 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 73629 event pairs, 1898 based on Foata normal form. 1/12032 useless extension candidates. Maximal degree in co-relation 57168. Up to 7204 conditions per place. [2025-03-14 01:04:12,245 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 346 selfloop transitions, 98 changer transitions 57/504 dead transitions. [2025-03-14 01:04:12,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 504 transitions, 4682 flow [2025-03-14 01:04:12,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-14 01:04:12,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-03-14 01:04:12,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 593 transitions. [2025-03-14 01:04:12,246 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2823809523809524 [2025-03-14 01:04:12,248 INFO L175 Difference]: Start difference. First operand has 218 places, 194 transitions, 1803 flow. Second operand 35 states and 593 transitions. [2025-03-14 01:04:12,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 504 transitions, 4682 flow [2025-03-14 01:04:12,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 504 transitions, 4372 flow, removed 103 selfloop flow, removed 16 redundant places. [2025-03-14 01:04:12,505 INFO L231 Difference]: Finished difference. Result has 244 places, 211 transitions, 2059 flow [2025-03-14 01:04:12,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2059, PETRI_PLACES=244, PETRI_TRANSITIONS=211} [2025-03-14 01:04:12,505 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 179 predicate places. [2025-03-14 01:04:12,505 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 211 transitions, 2059 flow [2025-03-14 01:04:12,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:12,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:12,505 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:12,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-14 01:04:12,506 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:12,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:12,506 INFO L85 PathProgramCache]: Analyzing trace with hash 194656410, now seen corresponding path program 19 times [2025-03-14 01:04:12,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:12,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633119170] [2025-03-14 01:04:12,506 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:04:12,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:12,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-14 01:04:12,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:12,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:12,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:14,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633119170] [2025-03-14 01:04:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633119170] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:14,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271748314] [2025-03-14 01:04:14,024 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:04:14,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:14,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:14,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:14,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-14 01:04:14,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-14 01:04:14,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:14,085 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:14,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:14,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-14 01:04:14,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:14,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:04:14,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-14 01:04:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:14,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:14,545 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-03-14 01:04:14,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-03-14 01:04:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271748314] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:14,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18, 13] total 34 [2025-03-14 01:04:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222858211] [2025-03-14 01:04:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:14,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:14,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:14,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1040, Unknown=0, NotChecked=0, Total=1122 [2025-03-14 01:04:14,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:14,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 211 transitions, 2059 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:14,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:14,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:14,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:16,443 INFO L124 PetriNetUnfolderBase]: 7435/11728 cut-off events. [2025-03-14 01:04:16,444 INFO L125 PetriNetUnfolderBase]: For 75976/75976 co-relation queries the response was YES. [2025-03-14 01:04:16,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57509 conditions, 11728 events. 7435/11728 cut-off events. For 75976/75976 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 71758 event pairs, 2101 based on Foata normal form. 1/11726 useless extension candidates. Maximal degree in co-relation 57432. Up to 8314 conditions per place. [2025-03-14 01:04:16,511 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 255 selfloop transitions, 63 changer transitions 91/412 dead transitions. [2025-03-14 01:04:16,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 412 transitions, 3958 flow [2025-03-14 01:04:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-14 01:04:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-14 01:04:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 439 transitions. [2025-03-14 01:04:16,512 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27098765432098765 [2025-03-14 01:04:16,512 INFO L175 Difference]: Start difference. First operand has 244 places, 211 transitions, 2059 flow. Second operand 27 states and 439 transitions. [2025-03-14 01:04:16,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 412 transitions, 3958 flow [2025-03-14 01:04:16,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 412 transitions, 3604 flow, removed 101 selfloop flow, removed 25 redundant places. [2025-03-14 01:04:16,821 INFO L231 Difference]: Finished difference. Result has 250 places, 204 transitions, 1842 flow [2025-03-14 01:04:16,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1842, PETRI_PLACES=250, PETRI_TRANSITIONS=204} [2025-03-14 01:04:16,822 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 185 predicate places. [2025-03-14 01:04:16,822 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 204 transitions, 1842 flow [2025-03-14 01:04:16,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:16,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:16,822 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:16,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-14 01:04:17,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:17,023 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:17,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:17,023 INFO L85 PathProgramCache]: Analyzing trace with hash 39201756, now seen corresponding path program 20 times [2025-03-14 01:04:17,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:17,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571010529] [2025-03-14 01:04:17,023 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:17,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:17,028 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:17,034 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:17,034 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:04:17,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:17,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:17,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571010529] [2025-03-14 01:04:17,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571010529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:17,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:17,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:04:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750759314] [2025-03-14 01:04:17,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:17,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:17,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:17,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:17,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:17,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 204 transitions, 1842 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:17,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:17,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:17,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:19,032 INFO L124 PetriNetUnfolderBase]: 7330/11571 cut-off events. [2025-03-14 01:04:19,033 INFO L125 PetriNetUnfolderBase]: For 70548/70548 co-relation queries the response was YES. [2025-03-14 01:04:19,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56133 conditions, 11571 events. 7330/11571 cut-off events. For 70548/70548 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 70373 event pairs, 1872 based on Foata normal form. 1/11569 useless extension candidates. Maximal degree in co-relation 56052. Up to 7074 conditions per place. [2025-03-14 01:04:19,103 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 348 selfloop transitions, 94 changer transitions 32/477 dead transitions. [2025-03-14 01:04:19,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 477 transitions, 4277 flow [2025-03-14 01:04:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-14 01:04:19,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-03-14 01:04:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 558 transitions. [2025-03-14 01:04:19,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2818181818181818 [2025-03-14 01:04:19,105 INFO L175 Difference]: Start difference. First operand has 250 places, 204 transitions, 1842 flow. Second operand 33 states and 558 transitions. [2025-03-14 01:04:19,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 477 transitions, 4277 flow [2025-03-14 01:04:19,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 477 transitions, 4055 flow, removed 42 selfloop flow, removed 24 redundant places. [2025-03-14 01:04:19,370 INFO L231 Difference]: Finished difference. Result has 247 places, 207 transitions, 1948 flow [2025-03-14 01:04:19,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1948, PETRI_PLACES=247, PETRI_TRANSITIONS=207} [2025-03-14 01:04:19,371 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 182 predicate places. [2025-03-14 01:04:19,371 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 207 transitions, 1948 flow [2025-03-14 01:04:19,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:19,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:19,371 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:19,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-14 01:04:19,371 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:19,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash 645371908, now seen corresponding path program 21 times [2025-03-14 01:04:19,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:19,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702502587] [2025-03-14 01:04:19,372 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:04:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:19,376 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:19,381 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:19,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:04:19,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:19,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:19,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702502587] [2025-03-14 01:04:19,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702502587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:19,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:19,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:04:19,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793915172] [2025-03-14 01:04:19,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:19,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:04:19,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:19,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:04:19,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:04:19,504 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:19,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 207 transitions, 1948 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:19,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:19,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:19,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:21,432 INFO L124 PetriNetUnfolderBase]: 7320/11559 cut-off events. [2025-03-14 01:04:21,433 INFO L125 PetriNetUnfolderBase]: For 65938/65938 co-relation queries the response was YES. [2025-03-14 01:04:21,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56062 conditions, 11559 events. 7320/11559 cut-off events. For 65938/65938 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 70412 event pairs, 1901 based on Foata normal form. 2/11558 useless extension candidates. Maximal degree in co-relation 55987. Up to 7201 conditions per place. [2025-03-14 01:04:21,496 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 282 selfloop transitions, 90 changer transitions 74/449 dead transitions. [2025-03-14 01:04:21,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 449 transitions, 4183 flow [2025-03-14 01:04:21,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-03-14 01:04:21,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-03-14 01:04:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 510 transitions. [2025-03-14 01:04:21,497 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2833333333333333 [2025-03-14 01:04:21,497 INFO L175 Difference]: Start difference. First operand has 247 places, 207 transitions, 1948 flow. Second operand 30 states and 510 transitions. [2025-03-14 01:04:21,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 449 transitions, 4183 flow [2025-03-14 01:04:21,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 449 transitions, 3947 flow, removed 29 selfloop flow, removed 28 redundant places. [2025-03-14 01:04:21,739 INFO L231 Difference]: Finished difference. Result has 257 places, 204 transitions, 2013 flow [2025-03-14 01:04:21,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2013, PETRI_PLACES=257, PETRI_TRANSITIONS=204} [2025-03-14 01:04:21,740 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 192 predicate places. [2025-03-14 01:04:21,740 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 204 transitions, 2013 flow [2025-03-14 01:04:21,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:21,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:21,740 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:21,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-14 01:04:21,741 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:21,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1896896252, now seen corresponding path program 22 times [2025-03-14 01:04:21,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:21,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891516198] [2025-03-14 01:04:21,741 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:04:21,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:21,747 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:21,750 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 57 statements. [2025-03-14 01:04:21,750 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:04:21,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891516198] [2025-03-14 01:04:21,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891516198] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:21,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:21,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:04:21,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412893402] [2025-03-14 01:04:21,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:21,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:21,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:21,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:21,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:21,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:21,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 204 transitions, 2013 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:21,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:21,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:21,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:23,703 INFO L124 PetriNetUnfolderBase]: 7167/11329 cut-off events. [2025-03-14 01:04:23,703 INFO L125 PetriNetUnfolderBase]: For 72119/72119 co-relation queries the response was YES. [2025-03-14 01:04:23,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56540 conditions, 11329 events. 7167/11329 cut-off events. For 72119/72119 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 68724 event pairs, 1844 based on Foata normal form. 1/11327 useless extension candidates. Maximal degree in co-relation 56458. Up to 7123 conditions per place. [2025-03-14 01:04:23,774 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 311 selfloop transitions, 98 changer transitions 47/459 dead transitions. [2025-03-14 01:04:23,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 459 transitions, 4360 flow [2025-03-14 01:04:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-14 01:04:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-03-14 01:04:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 537 transitions. [2025-03-14 01:04:23,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27121212121212124 [2025-03-14 01:04:23,775 INFO L175 Difference]: Start difference. First operand has 257 places, 204 transitions, 2013 flow. Second operand 33 states and 537 transitions. [2025-03-14 01:04:23,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 459 transitions, 4360 flow [2025-03-14 01:04:24,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 459 transitions, 4026 flow, removed 75 selfloop flow, removed 32 redundant places. [2025-03-14 01:04:24,102 INFO L231 Difference]: Finished difference. Result has 259 places, 212 transitions, 2136 flow [2025-03-14 01:04:24,102 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2136, PETRI_PLACES=259, PETRI_TRANSITIONS=212} [2025-03-14 01:04:24,102 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 194 predicate places. [2025-03-14 01:04:24,102 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 212 transitions, 2136 flow [2025-03-14 01:04:24,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:24,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:24,102 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:24,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-14 01:04:24,103 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:24,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:24,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2102288282, now seen corresponding path program 23 times [2025-03-14 01:04:24,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:24,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625462911] [2025-03-14 01:04:24,103 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:24,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:24,108 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:24,119 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:24,119 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:24,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:25,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:25,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625462911] [2025-03-14 01:04:25,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625462911] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:25,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924027505] [2025-03-14 01:04:25,245 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:25,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:25,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:25,247 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:25,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-14 01:04:25,288 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:25,306 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:25,307 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:25,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:25,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-14 01:04:25,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:25,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:04:25,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-14 01:04:25,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:25,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:25,682 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-03-14 01:04:25,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-03-14 01:04:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:25,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924027505] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:25,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:25,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19, 13] total 33 [2025-03-14 01:04:25,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2734866] [2025-03-14 01:04:25,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:25,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:25,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:25,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:25,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2025-03-14 01:04:25,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:25,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 212 transitions, 2136 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:25,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:25,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:25,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:27,772 INFO L124 PetriNetUnfolderBase]: 7037/11129 cut-off events. [2025-03-14 01:04:27,772 INFO L125 PetriNetUnfolderBase]: For 65035/65035 co-relation queries the response was YES. [2025-03-14 01:04:27,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54511 conditions, 11129 events. 7037/11129 cut-off events. For 65035/65035 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 67146 event pairs, 2012 based on Foata normal form. 1/11127 useless extension candidates. Maximal degree in co-relation 54432. Up to 7955 conditions per place. [2025-03-14 01:04:27,888 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 282 selfloop transitions, 74 changer transitions 36/395 dead transitions. [2025-03-14 01:04:27,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 395 transitions, 3792 flow [2025-03-14 01:04:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-14 01:04:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-14 01:04:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 421 transitions. [2025-03-14 01:04:27,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26987179487179486 [2025-03-14 01:04:27,889 INFO L175 Difference]: Start difference. First operand has 259 places, 212 transitions, 2136 flow. Second operand 26 states and 421 transitions. [2025-03-14 01:04:27,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 395 transitions, 3792 flow [2025-03-14 01:04:28,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 395 transitions, 3558 flow, removed 31 selfloop flow, removed 27 redundant places. [2025-03-14 01:04:28,228 INFO L231 Difference]: Finished difference. Result has 261 places, 213 transitions, 2123 flow [2025-03-14 01:04:28,229 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2123, PETRI_PLACES=261, PETRI_TRANSITIONS=213} [2025-03-14 01:04:28,229 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 196 predicate places. [2025-03-14 01:04:28,229 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 213 transitions, 2123 flow [2025-03-14 01:04:28,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:28,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:28,229 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:28,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-14 01:04:28,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:28,430 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:28,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:28,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1399796624, now seen corresponding path program 24 times [2025-03-14 01:04:28,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:28,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794172801] [2025-03-14 01:04:28,430 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:04:28,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:28,436 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:28,442 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:28,442 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:04:28,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:28,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794172801] [2025-03-14 01:04:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794172801] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:28,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:28,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:04:28,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433439417] [2025-03-14 01:04:28,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:28,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:28,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:28,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:28,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:28,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:28,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 213 transitions, 2123 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:28,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:28,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:28,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:30,444 INFO L124 PetriNetUnfolderBase]: 6982/11030 cut-off events. [2025-03-14 01:04:30,445 INFO L125 PetriNetUnfolderBase]: For 66116/66116 co-relation queries the response was YES. [2025-03-14 01:04:30,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54088 conditions, 11030 events. 6982/11030 cut-off events. For 66116/66116 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 66447 event pairs, 1988 based on Foata normal form. 1/11028 useless extension candidates. Maximal degree in co-relation 54007. Up to 8021 conditions per place. [2025-03-14 01:04:30,511 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 275 selfloop transitions, 75 changer transitions 40/393 dead transitions. [2025-03-14 01:04:30,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 393 transitions, 3753 flow [2025-03-14 01:04:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-14 01:04:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-14 01:04:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 442 transitions. [2025-03-14 01:04:30,513 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2540229885057471 [2025-03-14 01:04:30,513 INFO L175 Difference]: Start difference. First operand has 261 places, 213 transitions, 2123 flow. Second operand 29 states and 442 transitions. [2025-03-14 01:04:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 393 transitions, 3753 flow [2025-03-14 01:04:30,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 393 transitions, 3496 flow, removed 30 selfloop flow, removed 23 redundant places. [2025-03-14 01:04:30,762 INFO L231 Difference]: Finished difference. Result has 263 places, 210 transitions, 2034 flow [2025-03-14 01:04:30,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2034, PETRI_PLACES=263, PETRI_TRANSITIONS=210} [2025-03-14 01:04:30,763 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 198 predicate places. [2025-03-14 01:04:30,763 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 210 transitions, 2034 flow [2025-03-14 01:04:30,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:30,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:30,763 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:30,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-14 01:04:30,763 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:30,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1875868738, now seen corresponding path program 25 times [2025-03-14 01:04:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472936963] [2025-03-14 01:04:30,764 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:04:30,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:30,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-14 01:04:30,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:30,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:30,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472936963] [2025-03-14 01:04:31,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472936963] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:31,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325383656] [2025-03-14 01:04:31,521 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:04:31,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:31,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:31,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:31,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-14 01:04:31,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-14 01:04:31,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:31,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:31,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:31,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-14 01:04:31,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:31,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:04:31,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-14 01:04:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:31,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:32,026 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-03-14 01:04:32,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-03-14 01:04:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:32,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325383656] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:32,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:32,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17, 13] total 34 [2025-03-14 01:04:32,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132202615] [2025-03-14 01:04:32,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:32,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:32,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:32,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:32,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2025-03-14 01:04:32,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:32,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 210 transitions, 2034 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:32,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:32,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:32,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:33,918 INFO L124 PetriNetUnfolderBase]: 6947/10999 cut-off events. [2025-03-14 01:04:33,918 INFO L125 PetriNetUnfolderBase]: For 61289/61289 co-relation queries the response was YES. [2025-03-14 01:04:33,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53061 conditions, 10999 events. 6947/10999 cut-off events. For 61289/61289 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 66171 event pairs, 1849 based on Foata normal form. 1/10997 useless extension candidates. Maximal degree in co-relation 52981. Up to 7213 conditions per place. [2025-03-14 01:04:34,011 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 287 selfloop transitions, 78 changer transitions 39/407 dead transitions. [2025-03-14 01:04:34,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 407 transitions, 3848 flow [2025-03-14 01:04:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-14 01:04:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-03-14 01:04:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 454 transitions. [2025-03-14 01:04:34,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.26091954022988506 [2025-03-14 01:04:34,012 INFO L175 Difference]: Start difference. First operand has 263 places, 210 transitions, 2034 flow. Second operand 29 states and 454 transitions. [2025-03-14 01:04:34,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 407 transitions, 3848 flow [2025-03-14 01:04:34,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 407 transitions, 3663 flow, removed 26 selfloop flow, removed 20 redundant places. [2025-03-14 01:04:34,292 INFO L231 Difference]: Finished difference. Result has 271 places, 210 transitions, 2042 flow [2025-03-14 01:04:34,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2042, PETRI_PLACES=271, PETRI_TRANSITIONS=210} [2025-03-14 01:04:34,293 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 206 predicate places. [2025-03-14 01:04:34,293 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 210 transitions, 2042 flow [2025-03-14 01:04:34,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:34,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:34,293 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:34,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-14 01:04:34,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:34,494 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:34,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash 614882554, now seen corresponding path program 26 times [2025-03-14 01:04:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049084619] [2025-03-14 01:04:34,495 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:34,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:34,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:34,511 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:34,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:04:34,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:34,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:34,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:34,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049084619] [2025-03-14 01:04:34,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049084619] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:34,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:34,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:04:34,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039102714] [2025-03-14 01:04:34,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:34,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:04:34,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:34,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:04:34,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:04:34,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:34,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 210 transitions, 2042 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:34,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:34,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:34,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:36,112 INFO L124 PetriNetUnfolderBase]: 6933/10976 cut-off events. [2025-03-14 01:04:36,112 INFO L125 PetriNetUnfolderBase]: For 65271/65271 co-relation queries the response was YES. [2025-03-14 01:04:36,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53280 conditions, 10976 events. 6933/10976 cut-off events. For 65271/65271 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 66098 event pairs, 2072 based on Foata normal form. 1/10974 useless extension candidates. Maximal degree in co-relation 53194. Up to 8166 conditions per place. [2025-03-14 01:04:36,212 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 237 selfloop transitions, 65 changer transitions 59/364 dead transitions. [2025-03-14 01:04:36,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 364 transitions, 3478 flow [2025-03-14 01:04:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-14 01:04:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-14 01:04:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 365 transitions. [2025-03-14 01:04:36,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2765151515151515 [2025-03-14 01:04:36,213 INFO L175 Difference]: Start difference. First operand has 271 places, 210 transitions, 2042 flow. Second operand 22 states and 365 transitions. [2025-03-14 01:04:36,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 364 transitions, 3478 flow [2025-03-14 01:04:36,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 364 transitions, 3243 flow, removed 17 selfloop flow, removed 26 redundant places. [2025-03-14 01:04:36,514 INFO L231 Difference]: Finished difference. Result has 266 places, 207 transitions, 1945 flow [2025-03-14 01:04:36,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1945, PETRI_PLACES=266, PETRI_TRANSITIONS=207} [2025-03-14 01:04:36,514 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 201 predicate places. [2025-03-14 01:04:36,515 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 207 transitions, 1945 flow [2025-03-14 01:04:36,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:36,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:36,515 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:36,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-14 01:04:36,515 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:36,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:36,516 INFO L85 PathProgramCache]: Analyzing trace with hash -785560648, now seen corresponding path program 27 times [2025-03-14 01:04:36,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:36,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212612974] [2025-03-14 01:04:36,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:04:36,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:36,520 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:36,525 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:36,525 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:04:36,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:36,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:36,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212612974] [2025-03-14 01:04:36,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212612974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:36,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:36,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:04:36,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140899152] [2025-03-14 01:04:36,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:36,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:36,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:36,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:36,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:36,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:36,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 207 transitions, 1945 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:36,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:36,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:36,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:38,164 INFO L124 PetriNetUnfolderBase]: 6675/10570 cut-off events. [2025-03-14 01:04:38,164 INFO L125 PetriNetUnfolderBase]: For 55590/55590 co-relation queries the response was YES. [2025-03-14 01:04:38,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50188 conditions, 10570 events. 6675/10570 cut-off events. For 55590/55590 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 63306 event pairs, 1992 based on Foata normal form. 1/10568 useless extension candidates. Maximal degree in co-relation 50102. Up to 7834 conditions per place. [2025-03-14 01:04:38,268 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 233 selfloop transitions, 55 changer transitions 67/358 dead transitions. [2025-03-14 01:04:38,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 358 transitions, 3337 flow [2025-03-14 01:04:38,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-14 01:04:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-03-14 01:04:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 355 transitions. [2025-03-14 01:04:38,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.29583333333333334 [2025-03-14 01:04:38,269 INFO L175 Difference]: Start difference. First operand has 266 places, 207 transitions, 1945 flow. Second operand 20 states and 355 transitions. [2025-03-14 01:04:38,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 358 transitions, 3337 flow [2025-03-14 01:04:38,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 358 transitions, 3163 flow, removed 10 selfloop flow, removed 22 redundant places. [2025-03-14 01:04:38,637 INFO L231 Difference]: Finished difference. Result has 257 places, 193 transitions, 1765 flow [2025-03-14 01:04:38,637 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1765, PETRI_PLACES=257, PETRI_TRANSITIONS=193} [2025-03-14 01:04:38,637 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 192 predicate places. [2025-03-14 01:04:38,638 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 193 transitions, 1765 flow [2025-03-14 01:04:38,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:38,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:38,638 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:38,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-14 01:04:38,639 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:38,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:38,639 INFO L85 PathProgramCache]: Analyzing trace with hash -130655396, now seen corresponding path program 28 times [2025-03-14 01:04:38,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:38,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479465844] [2025-03-14 01:04:38,639 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-14 01:04:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:38,644 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:38,647 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 47 of 57 statements. [2025-03-14 01:04:38,648 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-14 01:04:38,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:38,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:38,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479465844] [2025-03-14 01:04:38,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479465844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:38,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:38,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:04:38,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534530278] [2025-03-14 01:04:38,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:38,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:38,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:38,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:38,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:38,745 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:38,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 193 transitions, 1765 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:38,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:38,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:38,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:40,118 INFO L124 PetriNetUnfolderBase]: 6430/10137 cut-off events. [2025-03-14 01:04:40,118 INFO L125 PetriNetUnfolderBase]: For 54481/54481 co-relation queries the response was YES. [2025-03-14 01:04:40,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48238 conditions, 10137 events. 6430/10137 cut-off events. For 54481/54481 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 59884 event pairs, 1971 based on Foata normal form. 1/10135 useless extension candidates. Maximal degree in co-relation 48159. Up to 7852 conditions per place. [2025-03-14 01:04:40,205 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 215 selfloop transitions, 52 changer transitions 63/333 dead transitions. [2025-03-14 01:04:40,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 333 transitions, 3025 flow [2025-03-14 01:04:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-14 01:04:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-14 01:04:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 352 transitions. [2025-03-14 01:04:40,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27936507936507937 [2025-03-14 01:04:40,206 INFO L175 Difference]: Start difference. First operand has 257 places, 193 transitions, 1765 flow. Second operand 21 states and 352 transitions. [2025-03-14 01:04:40,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 333 transitions, 3025 flow [2025-03-14 01:04:40,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 333 transitions, 2882 flow, removed 12 selfloop flow, removed 17 redundant places. [2025-03-14 01:04:40,426 INFO L231 Difference]: Finished difference. Result has 241 places, 180 transitions, 1639 flow [2025-03-14 01:04:40,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1639, PETRI_PLACES=241, PETRI_TRANSITIONS=180} [2025-03-14 01:04:40,427 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 176 predicate places. [2025-03-14 01:04:40,427 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 180 transitions, 1639 flow [2025-03-14 01:04:40,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:40,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:40,427 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:40,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-14 01:04:40,427 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:40,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2141340644, now seen corresponding path program 29 times [2025-03-14 01:04:40,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:40,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930421730] [2025-03-14 01:04:40,428 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:40,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:40,434 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:40,441 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:40,441 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:40,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:40,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:40,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930421730] [2025-03-14 01:04:40,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930421730] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:40,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880845764] [2025-03-14 01:04:40,993 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-14 01:04:40,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:40,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:40,996 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:40,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-14 01:04:41,047 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:41,070 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:41,070 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-14 01:04:41,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:41,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-14 01:04:41,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:41,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:04:41,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-14 01:04:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:41,270 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:41,441 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-03-14 01:04:41,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-03-14 01:04:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:41,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880845764] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:41,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:41,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16, 13] total 31 [2025-03-14 01:04:41,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700269101] [2025-03-14 01:04:41,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:41,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:41,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:41,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:41,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2025-03-14 01:04:41,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:41,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 180 transitions, 1639 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:41,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:41,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:41,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:43,171 INFO L124 PetriNetUnfolderBase]: 6348/9982 cut-off events. [2025-03-14 01:04:43,172 INFO L125 PetriNetUnfolderBase]: For 51001/51001 co-relation queries the response was YES. [2025-03-14 01:04:43,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47285 conditions, 9982 events. 6348/9982 cut-off events. For 51001/51001 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 58370 event pairs, 1750 based on Foata normal form. 1/9980 useless extension candidates. Maximal degree in co-relation 47212. Up to 7049 conditions per place. [2025-03-14 01:04:43,267 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 264 selfloop transitions, 64 changer transitions 37/368 dead transitions. [2025-03-14 01:04:43,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 368 transitions, 3246 flow [2025-03-14 01:04:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-14 01:04:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-14 01:04:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 423 transitions. [2025-03-14 01:04:43,268 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27115384615384613 [2025-03-14 01:04:43,268 INFO L175 Difference]: Start difference. First operand has 241 places, 180 transitions, 1639 flow. Second operand 26 states and 423 transitions. [2025-03-14 01:04:43,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 368 transitions, 3246 flow [2025-03-14 01:04:43,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 368 transitions, 3082 flow, removed 10 selfloop flow, removed 20 redundant places. [2025-03-14 01:04:43,490 INFO L231 Difference]: Finished difference. Result has 234 places, 182 transitions, 1658 flow [2025-03-14 01:04:43,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1658, PETRI_PLACES=234, PETRI_TRANSITIONS=182} [2025-03-14 01:04:43,491 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 169 predicate places. [2025-03-14 01:04:43,491 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 182 transitions, 1658 flow [2025-03-14 01:04:43,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:43,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:43,491 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:43,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-14 01:04:43,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:43,692 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:43,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1349579552, now seen corresponding path program 30 times [2025-03-14 01:04:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:43,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704219523] [2025-03-14 01:04:43,693 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-14 01:04:43,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:43,697 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:43,702 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:43,702 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-14 01:04:43,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704219523] [2025-03-14 01:04:43,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704219523] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:43,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:43,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:04:43,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050074218] [2025-03-14 01:04:43,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:43,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:04:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:43,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:04:43,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:04:43,818 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:43,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 182 transitions, 1658 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:43,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:43,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:43,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:45,199 INFO L124 PetriNetUnfolderBase]: 6216/9778 cut-off events. [2025-03-14 01:04:45,199 INFO L125 PetriNetUnfolderBase]: For 50531/50531 co-relation queries the response was YES. [2025-03-14 01:04:45,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46408 conditions, 9778 events. 6216/9778 cut-off events. For 50531/50531 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 57120 event pairs, 1740 based on Foata normal form. 1/9776 useless extension candidates. Maximal degree in co-relation 46335. Up to 6988 conditions per place. [2025-03-14 01:04:45,290 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 246 selfloop transitions, 55 changer transitions 41/345 dead transitions. [2025-03-14 01:04:45,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 345 transitions, 3062 flow [2025-03-14 01:04:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-14 01:04:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-14 01:04:45,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 391 transitions. [2025-03-14 01:04:45,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27152777777777776 [2025-03-14 01:04:45,291 INFO L175 Difference]: Start difference. First operand has 234 places, 182 transitions, 1658 flow. Second operand 24 states and 391 transitions. [2025-03-14 01:04:45,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 345 transitions, 3062 flow [2025-03-14 01:04:45,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 345 transitions, 2899 flow, removed 17 selfloop flow, removed 21 redundant places. [2025-03-14 01:04:45,517 INFO L231 Difference]: Finished difference. Result has 234 places, 173 transitions, 1529 flow [2025-03-14 01:04:45,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1529, PETRI_PLACES=234, PETRI_TRANSITIONS=173} [2025-03-14 01:04:45,518 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 169 predicate places. [2025-03-14 01:04:45,518 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 173 transitions, 1529 flow [2025-03-14 01:04:45,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:45,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:45,518 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:45,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-14 01:04:45,518 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:45,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:45,519 INFO L85 PathProgramCache]: Analyzing trace with hash 89040030, now seen corresponding path program 31 times [2025-03-14 01:04:45,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:45,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687468262] [2025-03-14 01:04:45,519 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:04:45,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:45,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-14 01:04:45,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:45,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:45,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:46,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:04:46,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:46,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687468262] [2025-03-14 01:04:46,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687468262] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:46,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812688033] [2025-03-14 01:04:46,966 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-14 01:04:46,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:46,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:04:46,968 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-14 01:04:46,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-14 01:04:47,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-14 01:04:47,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-14 01:04:47,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:04:47,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:47,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-14 01:04:47,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-14 01:04:47,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-14 01:04:47,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2025-03-14 01:04:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-14 01:04:47,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-14 01:04:47,541 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2025-03-14 01:04:47,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 74 [2025-03-14 01:04:47,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:47,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812688033] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-14 01:04:47,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-14 01:04:47,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18, 13] total 35 [2025-03-14 01:04:47,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116996441] [2025-03-14 01:04:47,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:47,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:47,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:47,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:47,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2025-03-14 01:04:47,591 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:47,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 173 transitions, 1529 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:47,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:47,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:47,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:49,367 INFO L124 PetriNetUnfolderBase]: 6212/9765 cut-off events. [2025-03-14 01:04:49,367 INFO L125 PetriNetUnfolderBase]: For 50111/50111 co-relation queries the response was YES. [2025-03-14 01:04:49,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45984 conditions, 9765 events. 6212/9765 cut-off events. For 50111/50111 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 56956 event pairs, 1735 based on Foata normal form. 1/9763 useless extension candidates. Maximal degree in co-relation 45912. Up to 7075 conditions per place. [2025-03-14 01:04:49,459 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 253 selfloop transitions, 56 changer transitions 37/349 dead transitions. [2025-03-14 01:04:49,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 349 transitions, 3025 flow [2025-03-14 01:04:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-14 01:04:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-03-14 01:04:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 397 transitions. [2025-03-14 01:04:49,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27569444444444446 [2025-03-14 01:04:49,460 INFO L175 Difference]: Start difference. First operand has 234 places, 173 transitions, 1529 flow. Second operand 24 states and 397 transitions. [2025-03-14 01:04:49,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 349 transitions, 3025 flow [2025-03-14 01:04:49,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 349 transitions, 2849 flow, removed 7 selfloop flow, removed 26 redundant places. [2025-03-14 01:04:49,664 INFO L231 Difference]: Finished difference. Result has 223 places, 171 transitions, 1482 flow [2025-03-14 01:04:49,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1482, PETRI_PLACES=223, PETRI_TRANSITIONS=171} [2025-03-14 01:04:49,665 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 158 predicate places. [2025-03-14 01:04:49,665 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 171 transitions, 1482 flow [2025-03-14 01:04:49,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:49,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:49,665 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:49,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-14 01:04:49,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-14 01:04:49,866 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:49,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:49,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1970007948, now seen corresponding path program 32 times [2025-03-14 01:04:49,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:49,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954047611] [2025-03-14 01:04:49,867 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-14 01:04:49,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:49,872 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:49,876 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:49,876 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-14 01:04:49,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:49,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:49,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954047611] [2025-03-14 01:04:49,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954047611] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:49,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:49,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-14 01:04:49,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829809360] [2025-03-14 01:04:49,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:49,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-14 01:04:49,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:49,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-14 01:04:49,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-14 01:04:49,996 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:49,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 171 transitions, 1482 flow. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:49,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:49,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:49,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:04:51,268 INFO L124 PetriNetUnfolderBase]: 6009/9435 cut-off events. [2025-03-14 01:04:51,268 INFO L125 PetriNetUnfolderBase]: For 46785/46785 co-relation queries the response was YES. [2025-03-14 01:04:51,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43900 conditions, 9435 events. 6009/9435 cut-off events. For 46785/46785 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 54746 event pairs, 1738 based on Foata normal form. 1/9433 useless extension candidates. Maximal degree in co-relation 43832. Up to 6899 conditions per place. [2025-03-14 01:04:51,346 INFO L140 encePairwiseOnDemand]: 42/60 looper letters, 204 selfloop transitions, 45 changer transitions 77/329 dead transitions. [2025-03-14 01:04:51,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 329 transitions, 2818 flow [2025-03-14 01:04:51,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-14 01:04:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-14 01:04:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 378 transitions. [2025-03-14 01:04:51,348 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.27391304347826084 [2025-03-14 01:04:51,348 INFO L175 Difference]: Start difference. First operand has 223 places, 171 transitions, 1482 flow. Second operand 23 states and 378 transitions. [2025-03-14 01:04:51,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 329 transitions, 2818 flow [2025-03-14 01:04:51,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 329 transitions, 2676 flow, removed 12 selfloop flow, removed 22 redundant places. [2025-03-14 01:04:51,527 INFO L231 Difference]: Finished difference. Result has 219 places, 156 transitions, 1329 flow [2025-03-14 01:04:51,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1329, PETRI_PLACES=219, PETRI_TRANSITIONS=156} [2025-03-14 01:04:51,528 INFO L279 CegarLoopForPetriNet]: 65 programPoint places, 154 predicate places. [2025-03-14 01:04:51,528 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 156 transitions, 1329 flow [2025-03-14 01:04:51,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 11 states have internal predecessors, (119), 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) [2025-03-14 01:04:51,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:04:51,528 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:04:51,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-14 01:04:51,528 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-03-14 01:04:51,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:04:51,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1212391676, now seen corresponding path program 33 times [2025-03-14 01:04:51,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:04:51,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491071193] [2025-03-14 01:04:51,529 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-14 01:04:51,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:04:51,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 2 equivalence classes. [2025-03-14 01:04:51,537 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 55 of 57 statements. [2025-03-14 01:04:51,537 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-14 01:04:51,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:04:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-14 01:04:51,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:04:51,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491071193] [2025-03-14 01:04:51,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491071193] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:04:51,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:04:51,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-14 01:04:51,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778055935] [2025-03-14 01:04:51,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:04:51,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-14 01:04:51,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:04:51,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-14 01:04:51,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-14 01:04:51,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 60 [2025-03-14 01:04:51,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 156 transitions, 1329 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 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) [2025-03-14 01:04:51,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:04:51,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 60 [2025-03-14 01:04:51,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand