./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:37:53,815 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:37:53,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:37:53,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:37:53,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:37:53,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:37:53,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:37:53,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:37:53,869 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:37:53,869 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:37:53,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:37:53,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:37:53,870 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:37:53,870 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:37:53,870 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:37:53,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:37:53,870 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:37:53,870 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:37:53,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:37:53,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:37:53,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:37:53,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:37:53,871 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:37:53,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:37:53,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:37:53,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:37:53,872 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:37:53,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:37:53,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:37:53,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:37:53,873 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a0558934008acf79b7e5b205fa256c568a1b783af274566f36b253458639325 [2025-01-09 16:37:54,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:37:54,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:37:54,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:37:54,055 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:37:54,055 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:37:54,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2025-01-09 16:37:55,244 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/771f0ece4/92625fda4a064dffaa9e1732c9e8068a/FLAG01ebc2ab4 [2025-01-09 16:37:55,456 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:37:55,456 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2025-01-09 16:37:55,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/771f0ece4/92625fda4a064dffaa9e1732c9e8068a/FLAG01ebc2ab4 [2025-01-09 16:37:55,803 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/771f0ece4/92625fda4a064dffaa9e1732c9e8068a [2025-01-09 16:37:55,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:37:55,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:37:55,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:37:55,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:37:55,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:37:55,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:55,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7973a023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55, skipping insertion in model container [2025-01-09 16:37:55,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:55,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:37:55,931 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2508,2521] [2025-01-09 16:37:55,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:37:55,949 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:37:55,968 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c[2508,2521] [2025-01-09 16:37:55,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:37:55,978 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:37:55,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55 WrapperNode [2025-01-09 16:37:55,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:37:55,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:37:55,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:37:55,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:37:55,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:55,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,023 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 181 [2025-01-09 16:37:56,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:37:56,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:37:56,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:37:56,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:37:56,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,054 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-01-09 16:37:56,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,064 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:37:56,073 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:37:56,073 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:37:56,073 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:37:56,073 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (1/1) ... [2025-01-09 16:37:56,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:37:56,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:56,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:37:56,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:37:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:37:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:37:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:37:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:37:56,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:37:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:37:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 16:37:56,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 16:37:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 16:37:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 16:37:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:37:56,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:37:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 16:37:56,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 16:37:56,114 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:37:56,181 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:37:56,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:37:56,372 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:37:56,372 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:37:56,574 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:37:56,574 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:37:56,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:37:56 BoogieIcfgContainer [2025-01-09 16:37:56,575 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:37:56,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:37:56,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:37:56,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:37:56,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:37:55" (1/3) ... [2025-01-09 16:37:56,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b92fc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:37:56, skipping insertion in model container [2025-01-09 16:37:56,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:37:55" (2/3) ... [2025-01-09 16:37:56,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b92fc83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:37:56, skipping insertion in model container [2025-01-09 16:37:56,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:37:56" (3/3) ... [2025-01-09 16:37:56,581 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2025-01-09 16:37:56,592 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:37:56,593 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-array-int-symm.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-01-09 16:37:56,594 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:37:56,631 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-09 16:37:56,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 70 flow [2025-01-09 16:37:56,671 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2025-01-09 16:37:56,672 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:37:56,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 6/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2025-01-09 16:37:56,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 70 flow [2025-01-09 16:37:56,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 25 transitions, 62 flow [2025-01-09 16:37:56,681 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:37:56,688 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;@40fd3403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:37:56,689 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-09 16:37:56,696 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:37:56,696 INFO L124 PetriNetUnfolderBase]: 6/24 cut-off events. [2025-01-09 16:37:56,696 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:37:56,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:56,697 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:56,697 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:37:56,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:56,701 INFO L85 PathProgramCache]: Analyzing trace with hash 175638980, now seen corresponding path program 1 times [2025-01-09 16:37:56,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:56,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998669865] [2025-01-09 16:37:56,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:56,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:56,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 16:37:56,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 16:37:56,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:56,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:57,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:57,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998669865] [2025-01-09 16:37:57,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998669865] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:57,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:57,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:37:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076585305] [2025-01-09 16:37:57,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:57,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:37:57,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:57,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:37:57,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:37:57,228 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:37:57,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:57,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:57,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:37:57,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:57,486 INFO L124 PetriNetUnfolderBase]: 230/411 cut-off events. [2025-01-09 16:37:57,486 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-01-09 16:37:57,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 411 events. 230/411 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1623 event pairs, 64 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 421. Up to 146 conditions per place. [2025-01-09 16:37:57,495 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 58 selfloop transitions, 10 changer transitions 1/72 dead transitions. [2025-01-09 16:37:57,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 72 transitions, 324 flow [2025-01-09 16:37:57,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:37:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:37:57,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2025-01-09 16:37:57,510 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2025-01-09 16:37:57,511 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 62 flow. Second operand 8 states and 110 transitions. [2025-01-09 16:37:57,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 72 transitions, 324 flow [2025-01-09 16:37:57,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 72 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-09 16:37:57,519 INFO L231 Difference]: Finished difference. Result has 33 places, 34 transitions, 123 flow [2025-01-09 16:37:57,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=33, PETRI_TRANSITIONS=34} [2025-01-09 16:37:57,522 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2025-01-09 16:37:57,523 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 34 transitions, 123 flow [2025-01-09 16:37:57,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:37:57,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:57,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:57,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:37:57,523 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:37:57,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash 543849330, now seen corresponding path program 1 times [2025-01-09 16:37:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:57,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807288057] [2025-01-09 16:37:57,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:57,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:57,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:37:57,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:37:57,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:57,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:57,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:57,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807288057] [2025-01-09 16:37:57,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807288057] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:57,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487635018] [2025-01-09 16:37:57,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:57,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:57,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:57,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:37:57,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:37:57,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:37:57,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:37:57,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:57,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:57,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 16:37:57,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:57,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487635018] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:58,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:37:58,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2025-01-09 16:37:58,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353832246] [2025-01-09 16:37:58,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:58,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 16:37:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:58,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 16:37:58,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:37:58,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:37:58,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 34 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2025-01-09 16:37:58,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:58,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:37:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:58,313 INFO L124 PetriNetUnfolderBase]: 496/873 cut-off events. [2025-01-09 16:37:58,313 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2025-01-09 16:37:58,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 873 events. 496/873 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4233 event pairs, 220 based on Foata normal form. 1/861 useless extension candidates. Maximal degree in co-relation 1189. Up to 397 conditions per place. [2025-01-09 16:37:58,318 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 83 selfloop transitions, 12 changer transitions 1/99 dead transitions. [2025-01-09 16:37:58,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 99 transitions, 508 flow [2025-01-09 16:37:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:37:58,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:37:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2025-01-09 16:37:58,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2025-01-09 16:37:58,319 INFO L175 Difference]: Start difference. First operand has 33 places, 34 transitions, 123 flow. Second operand 8 states and 126 transitions. [2025-01-09 16:37:58,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 99 transitions, 508 flow [2025-01-09 16:37:58,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 99 transitions, 504 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-01-09 16:37:58,321 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 210 flow [2025-01-09 16:37:58,321 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2025-01-09 16:37:58,322 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2025-01-09 16:37:58,322 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 210 flow [2025-01-09 16:37:58,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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) [2025-01-09 16:37:58,322 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:58,322 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:58,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 16:37:58,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:58,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:37:58,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2064500006, now seen corresponding path program 2 times [2025-01-09 16:37:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:58,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653962064] [2025-01-09 16:37:58,527 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:37:58,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:58,538 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:37:58,544 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 18 statements. [2025-01-09 16:37:58,544 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:37:58,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:58,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:37:58,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:58,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653962064] [2025-01-09 16:37:58,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653962064] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:58,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:58,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:37:58,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852165855] [2025-01-09 16:37:58,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:58,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:37:58,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:58,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:37:58,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:37:58,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:37:58,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2025-01-09 16:37:58,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:58,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:37:58,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:59,002 INFO L124 PetriNetUnfolderBase]: 543/993 cut-off events. [2025-01-09 16:37:59,003 INFO L125 PetriNetUnfolderBase]: For 570/570 co-relation queries the response was YES. [2025-01-09 16:37:59,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2497 conditions, 993 events. 543/993 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5097 event pairs, 70 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 1718. Up to 290 conditions per place. [2025-01-09 16:37:59,010 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 63 selfloop transitions, 24 changer transitions 1/91 dead transitions. [2025-01-09 16:37:59,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 554 flow [2025-01-09 16:37:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:37:59,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:37:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2025-01-09 16:37:59,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2025-01-09 16:37:59,014 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 210 flow. Second operand 9 states and 118 transitions. [2025-01-09 16:37:59,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 554 flow [2025-01-09 16:37:59,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 533 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-01-09 16:37:59,022 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 343 flow [2025-01-09 16:37:59,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=343, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2025-01-09 16:37:59,023 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2025-01-09 16:37:59,023 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 343 flow [2025-01-09 16:37:59,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2025-01-09 16:37:59,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:59,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:59,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:37:59,024 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:37:59,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:59,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1503833246, now seen corresponding path program 1 times [2025-01-09 16:37:59,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:59,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707054667] [2025-01-09 16:37:59,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:59,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:37:59,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:37:59,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:59,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:59,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707054667] [2025-01-09 16:37:59,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707054667] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:37:59,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:37:59,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:37:59,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176388434] [2025-01-09 16:37:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:59,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:37:59,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:59,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:37:59,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:37:59,128 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:37:59,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2025-01-09 16:37:59,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:59,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:37:59,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:59,329 INFO L124 PetriNetUnfolderBase]: 403/777 cut-off events. [2025-01-09 16:37:59,329 INFO L125 PetriNetUnfolderBase]: For 1007/1007 co-relation queries the response was YES. [2025-01-09 16:37:59,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 777 events. 403/777 cut-off events. For 1007/1007 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3964 event pairs, 185 based on Foata normal form. 32/806 useless extension candidates. Maximal degree in co-relation 1505. Up to 458 conditions per place. [2025-01-09 16:37:59,333 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 64 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2025-01-09 16:37:59,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 590 flow [2025-01-09 16:37:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:37:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:37:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2025-01-09 16:37:59,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-01-09 16:37:59,334 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 343 flow. Second operand 6 states and 78 transitions. [2025-01-09 16:37:59,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 590 flow [2025-01-09 16:37:59,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 565 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-01-09 16:37:59,342 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 371 flow [2025-01-09 16:37:59,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2025-01-09 16:37:59,342 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2025-01-09 16:37:59,343 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 371 flow [2025-01-09 16:37:59,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2025-01-09 16:37:59,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:59,343 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:59,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 16:37:59,343 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:37:59,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:37:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1516682742, now seen corresponding path program 1 times [2025-01-09 16:37:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:37:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528993355] [2025-01-09 16:37:59,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:59,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:37:59,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:37:59,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:37:59,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:59,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:59,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:37:59,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528993355] [2025-01-09 16:37:59,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528993355] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:59,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461534768] [2025-01-09 16:37:59,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:37:59,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:37:59,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:37:59,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:37:59,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:37:59,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:37:59,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:37:59,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:37:59,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:37:59,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 16:37:59,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:37:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:59,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:37:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:37:59,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461534768] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:37:59,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:37:59,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-01-09 16:37:59,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169403709] [2025-01-09 16:37:59,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:37:59,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:37:59,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:37:59,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:37:59,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:37:59,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:37:59,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2025-01-09 16:37:59,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:37:59,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:37:59,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:37:59,882 INFO L124 PetriNetUnfolderBase]: 425/833 cut-off events. [2025-01-09 16:37:59,883 INFO L125 PetriNetUnfolderBase]: For 1250/1250 co-relation queries the response was YES. [2025-01-09 16:37:59,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 833 events. 425/833 cut-off events. For 1250/1250 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4447 event pairs, 229 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 1838. Up to 458 conditions per place. [2025-01-09 16:37:59,886 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 81 selfloop transitions, 10 changer transitions 3/97 dead transitions. [2025-01-09 16:37:59,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 97 transitions, 715 flow [2025-01-09 16:37:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:37:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:37:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2025-01-09 16:37:59,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5561224489795918 [2025-01-09 16:37:59,887 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 371 flow. Second operand 7 states and 109 transitions. [2025-01-09 16:37:59,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 97 transitions, 715 flow [2025-01-09 16:37:59,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 97 transitions, 710 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-09 16:37:59,891 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 452 flow [2025-01-09 16:37:59,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2025-01-09 16:37:59,891 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2025-01-09 16:37:59,891 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 452 flow [2025-01-09 16:37:59,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 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) [2025-01-09 16:37:59,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:37:59,891 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:37:59,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:38:00,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:00,092 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:00,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1850541934, now seen corresponding path program 1 times [2025-01-09 16:38:00,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:00,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204893602] [2025-01-09 16:38:00,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:00,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:00,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 16:38:00,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 16:38:00,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:00,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:00,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204893602] [2025-01-09 16:38:00,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204893602] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:00,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:00,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:38:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672354681] [2025-01-09 16:38:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:00,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:00,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:00,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:00,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:38:00,203 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:00,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2025-01-09 16:38:00,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:00,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:00,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:00,401 INFO L124 PetriNetUnfolderBase]: 327/658 cut-off events. [2025-01-09 16:38:00,404 INFO L125 PetriNetUnfolderBase]: For 1111/1111 co-relation queries the response was YES. [2025-01-09 16:38:00,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 658 events. 327/658 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3431 event pairs, 167 based on Foata normal form. 24/681 useless extension candidates. Maximal degree in co-relation 1784. Up to 458 conditions per place. [2025-01-09 16:38:00,407 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 51 selfloop transitions, 5 changer transitions 9/68 dead transitions. [2025-01-09 16:38:00,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 573 flow [2025-01-09 16:38:00,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:38:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:38:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2025-01-09 16:38:00,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2025-01-09 16:38:00,414 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 452 flow. Second operand 6 states and 73 transitions. [2025-01-09 16:38:00,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 573 flow [2025-01-09 16:38:00,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 536 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:00,419 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 304 flow [2025-01-09 16:38:00,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2025-01-09 16:38:00,423 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2025-01-09 16:38:00,423 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 304 flow [2025-01-09 16:38:00,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2025-01-09 16:38:00,423 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:00,423 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:00,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 16:38:00,423 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:00,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1598385650, now seen corresponding path program 2 times [2025-01-09 16:38:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778307090] [2025-01-09 16:38:00,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:00,428 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-09 16:38:00,432 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 18 statements. [2025-01-09 16:38:00,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:38:00,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:00,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:00,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778307090] [2025-01-09 16:38:00,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778307090] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:00,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:00,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:38:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685290719] [2025-01-09 16:38:00,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:00,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:38:00,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:00,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:38:00,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:38:00,531 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:00,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2025-01-09 16:38:00,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:00,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:00,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:00,656 INFO L124 PetriNetUnfolderBase]: 284/534 cut-off events. [2025-01-09 16:38:00,656 INFO L125 PetriNetUnfolderBase]: For 711/711 co-relation queries the response was YES. [2025-01-09 16:38:00,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 534 events. 284/534 cut-off events. For 711/711 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2410 event pairs, 72 based on Foata normal form. 1/533 useless extension candidates. Maximal degree in co-relation 1495. Up to 443 conditions per place. [2025-01-09 16:38:00,659 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 36 selfloop transitions, 6 changer transitions 17/62 dead transitions. [2025-01-09 16:38:00,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 461 flow [2025-01-09 16:38:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:38:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:38:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2025-01-09 16:38:00,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2025-01-09 16:38:00,660 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 304 flow. Second operand 8 states and 86 transitions. [2025-01-09 16:38:00,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 461 flow [2025-01-09 16:38:00,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 439 flow, removed 5 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:00,663 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 251 flow [2025-01-09 16:38:00,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=251, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2025-01-09 16:38:00,663 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2025-01-09 16:38:00,663 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 251 flow [2025-01-09 16:38:00,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2025-01-09 16:38:00,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:00,663 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:00,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 16:38:00,664 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:00,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:00,664 INFO L85 PathProgramCache]: Analyzing trace with hash 617760548, now seen corresponding path program 1 times [2025-01-09 16:38:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:00,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336477705] [2025-01-09 16:38:00,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:00,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:38:00,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:38:00,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:00,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:00,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336477705] [2025-01-09 16:38:00,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336477705] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:00,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:00,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:38:00,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019922530] [2025-01-09 16:38:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:00,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:00,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:00,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:00,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:38:00,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:00,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2025-01-09 16:38:00,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:00,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:00,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:00,823 INFO L124 PetriNetUnfolderBase]: 173/339 cut-off events. [2025-01-09 16:38:00,823 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2025-01-09 16:38:00,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 339 events. 173/339 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1397 event pairs, 68 based on Foata normal form. 21/357 useless extension candidates. Maximal degree in co-relation 939. Up to 158 conditions per place. [2025-01-09 16:38:00,825 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 45 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2025-01-09 16:38:00,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 369 flow [2025-01-09 16:38:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2025-01-09 16:38:00,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2025-01-09 16:38:00,826 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 251 flow. Second operand 5 states and 71 transitions. [2025-01-09 16:38:00,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 369 flow [2025-01-09 16:38:00,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 329 flow, removed 14 selfloop flow, removed 10 redundant places. [2025-01-09 16:38:00,827 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 203 flow [2025-01-09 16:38:00,827 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2025-01-09 16:38:00,828 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 22 predicate places. [2025-01-09 16:38:00,828 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 203 flow [2025-01-09 16:38:00,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2025-01-09 16:38:00,828 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:00,828 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:00,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 16:38:00,828 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:00,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:00,829 INFO L85 PathProgramCache]: Analyzing trace with hash -68414080, now seen corresponding path program 1 times [2025-01-09 16:38:00,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:00,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496539883] [2025-01-09 16:38:00,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:00,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:00,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:38:00,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:38:00,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:00,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496539883] [2025-01-09 16:38:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496539883] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:00,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:00,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:38:00,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235390628] [2025-01-09 16:38:00,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:00,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 16:38:00,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:00,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 16:38:00,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-09 16:38:00,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:00,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2025-01-09 16:38:00,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:00,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:00,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:00,953 INFO L124 PetriNetUnfolderBase]: 123/250 cut-off events. [2025-01-09 16:38:00,953 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2025-01-09 16:38:00,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 250 events. 123/250 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 970 event pairs, 54 based on Foata normal form. 12/261 useless extension candidates. Maximal degree in co-relation 642. Up to 156 conditions per place. [2025-01-09 16:38:00,954 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 24 selfloop transitions, 2 changer transitions 17/46 dead transitions. [2025-01-09 16:38:00,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 284 flow [2025-01-09 16:38:00,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2025-01-09 16:38:00,955 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-01-09 16:38:00,955 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 203 flow. Second operand 5 states and 65 transitions. [2025-01-09 16:38:00,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 284 flow [2025-01-09 16:38:00,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 273 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:00,957 INFO L231 Difference]: Finished difference. Result has 49 places, 29 transitions, 120 flow [2025-01-09 16:38:00,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=29} [2025-01-09 16:38:00,958 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2025-01-09 16:38:00,958 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 29 transitions, 120 flow [2025-01-09 16:38:00,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2025-01-09 16:38:00,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:00,958 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:00,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 16:38:00,958 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:00,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash 350493564, now seen corresponding path program 1 times [2025-01-09 16:38:00,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:00,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329699193] [2025-01-09 16:38:00,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:00,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:00,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:38:00,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:38:00,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:00,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:01,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329699193] [2025-01-09 16:38:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329699193] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882485429] [2025-01-09 16:38:01,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:01,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:01,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:01,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:01,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:38:01,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 16:38:01,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 16:38:01,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:01,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:01,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:38:01,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:01,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:01,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882485429] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:01,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:01,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-01-09 16:38:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294941690] [2025-01-09 16:38:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:01,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:01,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:01,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:01,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:38:01,270 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-01-09 16:38:01,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 29 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2025-01-09 16:38:01,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:01,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-01-09 16:38:01,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:01,351 INFO L124 PetriNetUnfolderBase]: 157/266 cut-off events. [2025-01-09 16:38:01,351 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2025-01-09 16:38:01,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 266 events. 157/266 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 797 event pairs, 46 based on Foata normal form. 11/275 useless extension candidates. Maximal degree in co-relation 708. Up to 129 conditions per place. [2025-01-09 16:38:01,353 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 30 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2025-01-09 16:38:01,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 238 flow [2025-01-09 16:38:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2025-01-09 16:38:01,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33163265306122447 [2025-01-09 16:38:01,353 INFO L175 Difference]: Start difference. First operand has 49 places, 29 transitions, 120 flow. Second operand 7 states and 65 transitions. [2025-01-09 16:38:01,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 238 flow [2025-01-09 16:38:01,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 210 flow, removed 12 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:01,356 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 135 flow [2025-01-09 16:38:01,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2025-01-09 16:38:01,357 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2025-01-09 16:38:01,357 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 135 flow [2025-01-09 16:38:01,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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) [2025-01-09 16:38:01,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:01,357 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:01,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 16:38:01,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:01,558 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:01,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:01,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1602644250, now seen corresponding path program 1 times [2025-01-09 16:38:01,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:01,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305954978] [2025-01-09 16:38:01,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:01,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:01,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 16:38:01,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:38:01,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:01,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:01,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:01,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305954978] [2025-01-09 16:38:01,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305954978] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:01,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080759684] [2025-01-09 16:38:01,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:01,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:01,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:01,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:01,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:38:01,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 16:38:01,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 16:38:01,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:01,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:01,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:38:01,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:01,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:01,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080759684] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:01,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:01,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2025-01-09 16:38:01,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133004561] [2025-01-09 16:38:01,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:01,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:01,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:01,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:01,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-01-09 16:38:01,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-01-09 16:38:01,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2025-01-09 16:38:01,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:01,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-01-09 16:38:01,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:01,942 INFO L124 PetriNetUnfolderBase]: 201/374 cut-off events. [2025-01-09 16:38:01,943 INFO L125 PetriNetUnfolderBase]: For 334/336 co-relation queries the response was YES. [2025-01-09 16:38:01,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 374 events. 201/374 cut-off events. For 334/336 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1362 event pairs, 100 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 998. Up to 190 conditions per place. [2025-01-09 16:38:01,944 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2025-01-09 16:38:01,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 272 flow [2025-01-09 16:38:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2025-01-09 16:38:01,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34183673469387754 [2025-01-09 16:38:01,945 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 135 flow. Second operand 7 states and 67 transitions. [2025-01-09 16:38:01,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 272 flow [2025-01-09 16:38:01,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 257 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:01,947 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 154 flow [2025-01-09 16:38:01,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=154, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2025-01-09 16:38:01,948 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2025-01-09 16:38:01,948 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 154 flow [2025-01-09 16:38:01,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2025-01-09 16:38:01,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:01,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:01,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:02,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-01-09 16:38:02,150 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:02,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1922103164, now seen corresponding path program 1 times [2025-01-09 16:38:02,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:02,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957397614] [2025-01-09 16:38:02,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:02,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:02,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 16:38:02,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 16:38:02,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:02,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:02,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:02,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957397614] [2025-01-09 16:38:02,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957397614] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:02,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:02,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943499281] [2025-01-09 16:38:02,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:02,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:02,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:02,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:02,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:02,553 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:02,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 154 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:02,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:02,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:02,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:02,795 INFO L124 PetriNetUnfolderBase]: 274/515 cut-off events. [2025-01-09 16:38:02,796 INFO L125 PetriNetUnfolderBase]: For 625/644 co-relation queries the response was YES. [2025-01-09 16:38:02,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 515 events. 274/515 cut-off events. For 625/644 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2275 event pairs, 101 based on Foata normal form. 1/513 useless extension candidates. Maximal degree in co-relation 1485. Up to 272 conditions per place. [2025-01-09 16:38:02,798 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 57 selfloop transitions, 9 changer transitions 6/75 dead transitions. [2025-01-09 16:38:02,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 466 flow [2025-01-09 16:38:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2025-01-09 16:38:02,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2025-01-09 16:38:02,799 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 154 flow. Second operand 9 states and 110 transitions. [2025-01-09 16:38:02,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 466 flow [2025-01-09 16:38:02,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 75 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:02,800 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 208 flow [2025-01-09 16:38:02,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=208, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2025-01-09 16:38:02,800 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2025-01-09 16:38:02,800 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 208 flow [2025-01-09 16:38:02,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:02,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:02,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:02,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 16:38:02,801 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:02,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:02,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1348056618, now seen corresponding path program 2 times [2025-01-09 16:38:02,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:02,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498286723] [2025-01-09 16:38:02,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:02,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:02,806 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 16:38:02,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 21 statements. [2025-01-09 16:38:02,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:38:02,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498286723] [2025-01-09 16:38:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498286723] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:03,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:03,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:03,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528526668] [2025-01-09 16:38:03,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:03,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:03,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:03,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:03,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:03,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:03,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 208 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:03,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:03,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:03,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:03,304 INFO L124 PetriNetUnfolderBase]: 321/593 cut-off events. [2025-01-09 16:38:03,304 INFO L125 PetriNetUnfolderBase]: For 1173/1199 co-relation queries the response was YES. [2025-01-09 16:38:03,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 593 events. 321/593 cut-off events. For 1173/1199 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2653 event pairs, 110 based on Foata normal form. 1/590 useless extension candidates. Maximal degree in co-relation 1955. Up to 280 conditions per place. [2025-01-09 16:38:03,306 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 54 selfloop transitions, 14 changer transitions 6/77 dead transitions. [2025-01-09 16:38:03,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 546 flow [2025-01-09 16:38:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:03,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2025-01-09 16:38:03,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-01-09 16:38:03,307 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 208 flow. Second operand 9 states and 112 transitions. [2025-01-09 16:38:03,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 546 flow [2025-01-09 16:38:03,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 507 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:03,310 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 291 flow [2025-01-09 16:38:03,310 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=291, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2025-01-09 16:38:03,311 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2025-01-09 16:38:03,311 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 291 flow [2025-01-09 16:38:03,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:03,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:03,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:03,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 16:38:03,312 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:03,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1958890030, now seen corresponding path program 3 times [2025-01-09 16:38:03,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:03,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933898611] [2025-01-09 16:38:03,312 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:03,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:03,318 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-01-09 16:38:03,329 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 21 statements. [2025-01-09 16:38:03,329 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:38:03,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:03,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:03,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933898611] [2025-01-09 16:38:03,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933898611] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:03,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:03,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 16:38:03,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664175852] [2025-01-09 16:38:03,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:03,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 16:38:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:03,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 16:38:03,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:38:03,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:03,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 291 flow. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:03,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:03,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:03,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:03,723 INFO L124 PetriNetUnfolderBase]: 312/575 cut-off events. [2025-01-09 16:38:03,723 INFO L125 PetriNetUnfolderBase]: For 1549/1572 co-relation queries the response was YES. [2025-01-09 16:38:03,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 575 events. 312/575 cut-off events. For 1549/1572 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2523 event pairs, 59 based on Foata normal form. 1/574 useless extension candidates. Maximal degree in co-relation 2065. Up to 275 conditions per place. [2025-01-09 16:38:03,725 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 50 selfloop transitions, 15 changer transitions 6/74 dead transitions. [2025-01-09 16:38:03,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 74 transitions, 563 flow [2025-01-09 16:38:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2025-01-09 16:38:03,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2025-01-09 16:38:03,726 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 291 flow. Second operand 9 states and 109 transitions. [2025-01-09 16:38:03,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 74 transitions, 563 flow [2025-01-09 16:38:03,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 541 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:03,729 INFO L231 Difference]: Finished difference. Result has 64 places, 44 transitions, 342 flow [2025-01-09 16:38:03,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=342, PETRI_PLACES=64, PETRI_TRANSITIONS=44} [2025-01-09 16:38:03,729 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2025-01-09 16:38:03,730 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 44 transitions, 342 flow [2025-01-09 16:38:03,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:03,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:03,730 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:03,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 16:38:03,730 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:03,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:03,730 INFO L85 PathProgramCache]: Analyzing trace with hash 352481558, now seen corresponding path program 4 times [2025-01-09 16:38:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:03,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763219444] [2025-01-09 16:38:03,731 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:03,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:03,736 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-09 16:38:03,742 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 16:38:03,742 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:03,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:03,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763219444] [2025-01-09 16:38:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763219444] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:03,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:03,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 16:38:03,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857392448] [2025-01-09 16:38:03,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:03,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:38:03,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:03,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:38:03,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:38:03,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:03,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 44 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-01-09 16:38:03,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:03,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:03,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:04,044 INFO L124 PetriNetUnfolderBase]: 418/769 cut-off events. [2025-01-09 16:38:04,044 INFO L125 PetriNetUnfolderBase]: For 2287/2314 co-relation queries the response was YES. [2025-01-09 16:38:04,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 769 events. 418/769 cut-off events. For 2287/2314 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3594 event pairs, 92 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 2843. Up to 400 conditions per place. [2025-01-09 16:38:04,048 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 58 selfloop transitions, 15 changer transitions 6/82 dead transitions. [2025-01-09 16:38:04,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 708 flow [2025-01-09 16:38:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:38:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:38:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2025-01-09 16:38:04,049 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2025-01-09 16:38:04,049 INFO L175 Difference]: Start difference. First operand has 64 places, 44 transitions, 342 flow. Second operand 8 states and 99 transitions. [2025-01-09 16:38:04,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 708 flow [2025-01-09 16:38:04,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 668 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-01-09 16:38:04,052 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 409 flow [2025-01-09 16:38:04,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=409, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2025-01-09 16:38:04,052 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2025-01-09 16:38:04,052 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 409 flow [2025-01-09 16:38:04,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-01-09 16:38:04,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:04,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:04,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-09 16:38:04,053 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:04,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash -679836774, now seen corresponding path program 5 times [2025-01-09 16:38:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202788762] [2025-01-09 16:38:04,053 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:04,058 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 16:38:04,068 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 16:38:04,068 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:04,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202788762] [2025-01-09 16:38:04,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202788762] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:04,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027023992] [2025-01-09 16:38:04,449 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:04,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:04,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:04,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:04,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:38:04,495 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 16:38:04,515 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 16:38:04,516 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:04,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:04,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 16:38:04,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:04,713 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:38:04,714 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2025-01-09 16:38:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:04,736 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:38:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027023992] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:04,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:38:04,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2025-01-09 16:38:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011556709] [2025-01-09 16:38:04,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:04,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:04,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:04,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:04,737 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:38:04,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:04,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 409 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:04,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:04,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:05,000 INFO L124 PetriNetUnfolderBase]: 414/764 cut-off events. [2025-01-09 16:38:05,001 INFO L125 PetriNetUnfolderBase]: For 3034/3061 co-relation queries the response was YES. [2025-01-09 16:38:05,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 764 events. 414/764 cut-off events. For 3034/3061 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3585 event pairs, 160 based on Foata normal form. 1/759 useless extension candidates. Maximal degree in co-relation 3016. Up to 404 conditions per place. [2025-01-09 16:38:05,005 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 58 selfloop transitions, 19 changer transitions 6/86 dead transitions. [2025-01-09 16:38:05,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 782 flow [2025-01-09 16:38:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:05,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2025-01-09 16:38:05,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-01-09 16:38:05,006 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 409 flow. Second operand 9 states and 108 transitions. [2025-01-09 16:38:05,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 782 flow [2025-01-09 16:38:05,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 761 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-01-09 16:38:05,011 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 543 flow [2025-01-09 16:38:05,011 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=543, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2025-01-09 16:38:05,011 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 51 predicate places. [2025-01-09 16:38:05,012 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 543 flow [2025-01-09 16:38:05,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:05,012 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:05,012 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:05,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:05,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 16:38:05,213 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:05,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:05,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1699612314, now seen corresponding path program 6 times [2025-01-09 16:38:05,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:05,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881302087] [2025-01-09 16:38:05,214 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:05,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:05,221 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-01-09 16:38:05,229 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 19 of 21 statements. [2025-01-09 16:38:05,230 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-01-09 16:38:05,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:05,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:05,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881302087] [2025-01-09 16:38:05,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881302087] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:05,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:05,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-09 16:38:05,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871561421] [2025-01-09 16:38:05,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:05,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 16:38:05,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:05,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 16:38:05,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:38:05,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:05,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 543 flow. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:05,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:05,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:05,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:05,671 INFO L124 PetriNetUnfolderBase]: 404/742 cut-off events. [2025-01-09 16:38:05,671 INFO L125 PetriNetUnfolderBase]: For 3874/3901 co-relation queries the response was YES. [2025-01-09 16:38:05,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3150 conditions, 742 events. 404/742 cut-off events. For 3874/3901 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3407 event pairs, 83 based on Foata normal form. 1/739 useless extension candidates. Maximal degree in co-relation 3107. Up to 399 conditions per place. [2025-01-09 16:38:05,675 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 55 selfloop transitions, 20 changer transitions 6/84 dead transitions. [2025-01-09 16:38:05,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 840 flow [2025-01-09 16:38:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:05,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2025-01-09 16:38:05,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2025-01-09 16:38:05,676 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 543 flow. Second operand 9 states and 106 transitions. [2025-01-09 16:38:05,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 840 flow [2025-01-09 16:38:05,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 807 flow, removed 9 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:05,682 INFO L231 Difference]: Finished difference. Result has 83 places, 57 transitions, 601 flow [2025-01-09 16:38:05,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=601, PETRI_PLACES=83, PETRI_TRANSITIONS=57} [2025-01-09 16:38:05,682 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 57 predicate places. [2025-01-09 16:38:05,682 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 57 transitions, 601 flow [2025-01-09 16:38:05,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:05,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:05,683 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] [2025-01-09 16:38:05,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-01-09 16:38:05,683 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:05,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:05,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1178214916, now seen corresponding path program 1 times [2025-01-09 16:38:05,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619060982] [2025-01-09 16:38:05,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:05,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:05,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:05,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:05,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:05,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:05,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619060982] [2025-01-09 16:38:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619060982] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783432120] [2025-01-09 16:38:05,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:05,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:05,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:05,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:05,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 16:38:05,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:05,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:05,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:05,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:05,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 16:38:05,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:06,023 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-01-09 16:38:06,023 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-01-09 16:38:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:06,031 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:06,102 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-01-09 16:38:06,103 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2025-01-09 16:38:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:06,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783432120] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:06,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:06,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2025-01-09 16:38:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734357454] [2025-01-09 16:38:06,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:06,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:38:06,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:06,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:38:06,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:38:06,143 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:06,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 57 transitions, 601 flow. Second operand has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 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) [2025-01-09 16:38:06,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:06,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:06,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:06,465 INFO L124 PetriNetUnfolderBase]: 429/792 cut-off events. [2025-01-09 16:38:06,465 INFO L125 PetriNetUnfolderBase]: For 4499/4520 co-relation queries the response was YES. [2025-01-09 16:38:06,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3436 conditions, 792 events. 429/792 cut-off events. For 4499/4520 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3876 event pairs, 40 based on Foata normal form. 12/804 useless extension candidates. Maximal degree in co-relation 3391. Up to 356 conditions per place. [2025-01-09 16:38:06,472 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 81 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2025-01-09 16:38:06,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 106 transitions, 1104 flow [2025-01-09 16:38:06,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:38:06,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:38:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2025-01-09 16:38:06,473 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.425 [2025-01-09 16:38:06,473 INFO L175 Difference]: Start difference. First operand has 83 places, 57 transitions, 601 flow. Second operand 10 states and 119 transitions. [2025-01-09 16:38:06,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 106 transitions, 1104 flow [2025-01-09 16:38:06,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 1035 flow, removed 14 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:06,482 INFO L231 Difference]: Finished difference. Result has 86 places, 59 transitions, 622 flow [2025-01-09 16:38:06,482 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=622, PETRI_PLACES=86, PETRI_TRANSITIONS=59} [2025-01-09 16:38:06,482 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 60 predicate places. [2025-01-09 16:38:06,482 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 59 transitions, 622 flow [2025-01-09 16:38:06,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 17 states have internal predecessors, (126), 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) [2025-01-09 16:38:06,483 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:06,483 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] [2025-01-09 16:38:06,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 16:38:06,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 16:38:06,687 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:06,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:06,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1668855342, now seen corresponding path program 1 times [2025-01-09 16:38:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:06,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461662507] [2025-01-09 16:38:06,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:06,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:06,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:06,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:06,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:06,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:06,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461662507] [2025-01-09 16:38:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461662507] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:06,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2814990] [2025-01-09 16:38:06,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:06,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:06,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:06,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:06,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 16:38:06,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:06,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:06,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:06,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:06,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 16:38:06,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:07,019 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-01-09 16:38:07,019 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-01-09 16:38:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:07,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:07,096 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:38:07,096 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-01-09 16:38:07,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:07,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2814990] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:07,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:07,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2025-01-09 16:38:07,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443360164] [2025-01-09 16:38:07,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:07,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:38:07,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:07,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:38:07,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:38:07,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:07,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 59 transitions, 622 flow. Second operand has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2025-01-09 16:38:07,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:07,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:07,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:07,481 INFO L124 PetriNetUnfolderBase]: 509/933 cut-off events. [2025-01-09 16:38:07,481 INFO L125 PetriNetUnfolderBase]: For 5265/5294 co-relation queries the response was YES. [2025-01-09 16:38:07,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 933 events. 509/933 cut-off events. For 5265/5294 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4591 event pairs, 211 based on Foata normal form. 10/938 useless extension candidates. Maximal degree in co-relation 4082. Up to 468 conditions per place. [2025-01-09 16:38:07,487 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 72 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2025-01-09 16:38:07,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 1020 flow [2025-01-09 16:38:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:38:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:38:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2025-01-09 16:38:07,488 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2025-01-09 16:38:07,488 INFO L175 Difference]: Start difference. First operand has 86 places, 59 transitions, 622 flow. Second operand 10 states and 123 transitions. [2025-01-09 16:38:07,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 1020 flow [2025-01-09 16:38:07,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 99 transitions, 948 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:07,495 INFO L231 Difference]: Finished difference. Result has 90 places, 62 transitions, 656 flow [2025-01-09 16:38:07,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=656, PETRI_PLACES=90, PETRI_TRANSITIONS=62} [2025-01-09 16:38:07,496 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2025-01-09 16:38:07,496 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 62 transitions, 656 flow [2025-01-09 16:38:07,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 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) [2025-01-09 16:38:07,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:07,496 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] [2025-01-09 16:38:07,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:07,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:07,697 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:07,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 485039886, now seen corresponding path program 2 times [2025-01-09 16:38:07,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376097243] [2025-01-09 16:38:07,698 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:07,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:07,704 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:07,720 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:07,720 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:07,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:07,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:07,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376097243] [2025-01-09 16:38:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376097243] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:07,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:07,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:07,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323781388] [2025-01-09 16:38:07,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:07,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:07,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:07,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:07,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:07,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:07,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 62 transitions, 656 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:07,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:07,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:07,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:08,220 INFO L124 PetriNetUnfolderBase]: 504/922 cut-off events. [2025-01-09 16:38:08,220 INFO L125 PetriNetUnfolderBase]: For 4682/4716 co-relation queries the response was YES. [2025-01-09 16:38:08,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 922 events. 504/922 cut-off events. For 4682/4716 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4636 event pairs, 179 based on Foata normal form. 5/925 useless extension candidates. Maximal degree in co-relation 3971. Up to 468 conditions per place. [2025-01-09 16:38:08,229 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 68 selfloop transitions, 21 changer transitions 10/102 dead transitions. [2025-01-09 16:38:08,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 102 transitions, 1058 flow [2025-01-09 16:38:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2025-01-09 16:38:08,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2025-01-09 16:38:08,230 INFO L175 Difference]: Start difference. First operand has 90 places, 62 transitions, 656 flow. Second operand 9 states and 106 transitions. [2025-01-09 16:38:08,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 102 transitions, 1058 flow [2025-01-09 16:38:08,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 102 transitions, 991 flow, removed 4 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:08,239 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 604 flow [2025-01-09 16:38:08,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=604, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2025-01-09 16:38:08,240 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 65 predicate places. [2025-01-09 16:38:08,240 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 604 flow [2025-01-09 16:38:08,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:08,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:08,241 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] [2025-01-09 16:38:08,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-01-09 16:38:08,241 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:08,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:08,241 INFO L85 PathProgramCache]: Analyzing trace with hash 545505090, now seen corresponding path program 3 times [2025-01-09 16:38:08,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149167171] [2025-01-09 16:38:08,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:08,248 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:08,251 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:08,252 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:38:08,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:08,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149167171] [2025-01-09 16:38:08,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149167171] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:08,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:08,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138250168] [2025-01-09 16:38:08,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:08,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:08,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:08,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:08,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:08,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 604 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:08,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:08,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:08,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:08,678 INFO L124 PetriNetUnfolderBase]: 516/938 cut-off events. [2025-01-09 16:38:08,678 INFO L125 PetriNetUnfolderBase]: For 5122/5156 co-relation queries the response was YES. [2025-01-09 16:38:08,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4171 conditions, 938 events. 516/938 cut-off events. For 5122/5156 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4591 event pairs, 239 based on Foata normal form. 10/942 useless extension candidates. Maximal degree in co-relation 4125. Up to 480 conditions per place. [2025-01-09 16:38:08,685 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 64 selfloop transitions, 26 changer transitions 0/93 dead transitions. [2025-01-09 16:38:08,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 93 transitions, 987 flow [2025-01-09 16:38:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2025-01-09 16:38:08,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2025-01-09 16:38:08,688 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 604 flow. Second operand 9 states and 110 transitions. [2025-01-09 16:38:08,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 93 transitions, 987 flow [2025-01-09 16:38:08,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 924 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:08,696 INFO L231 Difference]: Finished difference. Result has 92 places, 66 transitions, 707 flow [2025-01-09 16:38:08,696 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=707, PETRI_PLACES=92, PETRI_TRANSITIONS=66} [2025-01-09 16:38:08,697 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2025-01-09 16:38:08,697 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 66 transitions, 707 flow [2025-01-09 16:38:08,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:08,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:08,697 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] [2025-01-09 16:38:08,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-09 16:38:08,698 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:08,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1850971394, now seen corresponding path program 4 times [2025-01-09 16:38:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:08,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929551314] [2025-01-09 16:38:08,698 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:08,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:08,705 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:08,714 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:08,714 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:08,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:08,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929551314] [2025-01-09 16:38:08,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929551314] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:08,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518343703] [2025-01-09 16:38:08,822 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:08,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:08,823 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:08,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 16:38:08,871 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:08,891 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:08,891 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:08,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:08,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:38:08,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:08,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:38:08,967 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2025-01-09 16:38:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:08,988 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:09,069 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-01-09 16:38:09,069 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2025-01-09 16:38:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:09,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518343703] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:09,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:09,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 17 [2025-01-09 16:38:09,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346703015] [2025-01-09 16:38:09,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:09,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:09,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:09,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:09,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:38:09,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:09,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 66 transitions, 707 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:09,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:09,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:09,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:09,371 INFO L124 PetriNetUnfolderBase]: 582/1071 cut-off events. [2025-01-09 16:38:09,372 INFO L125 PetriNetUnfolderBase]: For 5221/5253 co-relation queries the response was YES. [2025-01-09 16:38:09,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4797 conditions, 1071 events. 582/1071 cut-off events. For 5221/5253 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5559 event pairs, 204 based on Foata normal form. 10/1076 useless extension candidates. Maximal degree in co-relation 4750. Up to 505 conditions per place. [2025-01-09 16:38:09,382 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 86 selfloop transitions, 28 changer transitions 0/117 dead transitions. [2025-01-09 16:38:09,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 117 transitions, 1300 flow [2025-01-09 16:38:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2025-01-09 16:38:09,386 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2025-01-09 16:38:09,386 INFO L175 Difference]: Start difference. First operand has 92 places, 66 transitions, 707 flow. Second operand 7 states and 105 transitions. [2025-01-09 16:38:09,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 117 transitions, 1300 flow [2025-01-09 16:38:09,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 1232 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:09,408 INFO L231 Difference]: Finished difference. Result has 97 places, 75 transitions, 885 flow [2025-01-09 16:38:09,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=885, PETRI_PLACES=97, PETRI_TRANSITIONS=75} [2025-01-09 16:38:09,408 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2025-01-09 16:38:09,411 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 75 transitions, 885 flow [2025-01-09 16:38:09,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:09,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:09,412 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] [2025-01-09 16:38:09,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:09,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:09,612 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:09,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:09,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1558197622, now seen corresponding path program 5 times [2025-01-09 16:38:09,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:09,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553661428] [2025-01-09 16:38:09,613 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:09,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:09,623 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:09,632 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:09,633 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:09,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:09,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:09,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553661428] [2025-01-09 16:38:09,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553661428] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:09,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798777952] [2025-01-09 16:38:09,874 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:09,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:09,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:09,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:09,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 16:38:09,921 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:09,939 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:09,939 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:09,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:09,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 16:38:09,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:10,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:10,098 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:38:10,098 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-01-09 16:38:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:10,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798777952] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:10,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:10,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 7] total 20 [2025-01-09 16:38:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24011816] [2025-01-09 16:38:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:10,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:10,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:10,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:10,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2025-01-09 16:38:10,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:10,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 75 transitions, 885 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:10,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:10,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:10,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:10,347 INFO L124 PetriNetUnfolderBase]: 602/1130 cut-off events. [2025-01-09 16:38:10,347 INFO L125 PetriNetUnfolderBase]: For 6026/6059 co-relation queries the response was YES. [2025-01-09 16:38:10,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5064 conditions, 1130 events. 602/1130 cut-off events. For 6026/6059 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6031 event pairs, 248 based on Foata normal form. 10/1131 useless extension candidates. Maximal degree in co-relation 5014. Up to 505 conditions per place. [2025-01-09 16:38:10,352 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 79 selfloop transitions, 32 changer transitions 0/114 dead transitions. [2025-01-09 16:38:10,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 114 transitions, 1323 flow [2025-01-09 16:38:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2025-01-09 16:38:10,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5561224489795918 [2025-01-09 16:38:10,353 INFO L175 Difference]: Start difference. First operand has 97 places, 75 transitions, 885 flow. Second operand 7 states and 109 transitions. [2025-01-09 16:38:10,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 114 transitions, 1323 flow [2025-01-09 16:38:10,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 114 transitions, 1287 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-01-09 16:38:10,363 INFO L231 Difference]: Finished difference. Result has 105 places, 80 transitions, 1028 flow [2025-01-09 16:38:10,363 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1028, PETRI_PLACES=105, PETRI_TRANSITIONS=80} [2025-01-09 16:38:10,363 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 79 predicate places. [2025-01-09 16:38:10,364 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 80 transitions, 1028 flow [2025-01-09 16:38:10,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:10,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:10,364 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] [2025-01-09 16:38:10,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 16:38:10,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:10,568 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:10,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:10,568 INFO L85 PathProgramCache]: Analyzing trace with hash 340232384, now seen corresponding path program 2 times [2025-01-09 16:38:10,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:10,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061577969] [2025-01-09 16:38:10,568 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:10,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:10,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:10,578 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:10,578 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:38:10,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:10,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:10,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061577969] [2025-01-09 16:38:10,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061577969] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:10,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:10,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:10,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749396100] [2025-01-09 16:38:10,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:10,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:10,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:10,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:10,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:10,792 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:10,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 80 transitions, 1028 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:10,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:10,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:10,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:11,161 INFO L124 PetriNetUnfolderBase]: 687/1291 cut-off events. [2025-01-09 16:38:11,161 INFO L125 PetriNetUnfolderBase]: For 6530/6567 co-relation queries the response was YES. [2025-01-09 16:38:11,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5828 conditions, 1291 events. 687/1291 cut-off events. For 6530/6567 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7227 event pairs, 264 based on Foata normal form. 12/1300 useless extension candidates. Maximal degree in co-relation 5774. Up to 514 conditions per place. [2025-01-09 16:38:11,169 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 86 selfloop transitions, 36 changer transitions 0/125 dead transitions. [2025-01-09 16:38:11,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 125 transitions, 1518 flow [2025-01-09 16:38:11,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:11,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:11,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2025-01-09 16:38:11,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-01-09 16:38:11,170 INFO L175 Difference]: Start difference. First operand has 105 places, 80 transitions, 1028 flow. Second operand 9 states and 117 transitions. [2025-01-09 16:38:11,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 125 transitions, 1518 flow [2025-01-09 16:38:11,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 125 transitions, 1446 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-01-09 16:38:11,183 INFO L231 Difference]: Finished difference. Result has 112 places, 84 transitions, 1096 flow [2025-01-09 16:38:11,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1096, PETRI_PLACES=112, PETRI_TRANSITIONS=84} [2025-01-09 16:38:11,183 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 86 predicate places. [2025-01-09 16:38:11,183 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 84 transitions, 1096 flow [2025-01-09 16:38:11,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:11,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:11,183 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] [2025-01-09 16:38:11,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-01-09 16:38:11,184 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:11,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:11,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1979121912, now seen corresponding path program 3 times [2025-01-09 16:38:11,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:11,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753750065] [2025-01-09 16:38:11,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:11,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:11,189 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:11,193 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:11,193 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:38:11,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:11,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:11,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753750065] [2025-01-09 16:38:11,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753750065] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:11,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116298231] [2025-01-09 16:38:11,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:11,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:11,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:11,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:11,459 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:11,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 84 transitions, 1096 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:11,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:11,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:11,808 INFO L124 PetriNetUnfolderBase]: 675/1279 cut-off events. [2025-01-09 16:38:11,808 INFO L125 PetriNetUnfolderBase]: For 6673/6708 co-relation queries the response was YES. [2025-01-09 16:38:11,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1279 events. 675/1279 cut-off events. For 6673/6708 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7210 event pairs, 284 based on Foata normal form. 12/1287 useless extension candidates. Maximal degree in co-relation 5786. Up to 616 conditions per place. [2025-01-09 16:38:11,815 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 77 selfloop transitions, 37 changer transitions 0/117 dead transitions. [2025-01-09 16:38:11,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 1494 flow [2025-01-09 16:38:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2025-01-09 16:38:11,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-01-09 16:38:11,815 INFO L175 Difference]: Start difference. First operand has 112 places, 84 transitions, 1096 flow. Second operand 9 states and 108 transitions. [2025-01-09 16:38:11,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 1494 flow [2025-01-09 16:38:11,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 1426 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:11,830 INFO L231 Difference]: Finished difference. Result has 118 places, 86 transitions, 1144 flow [2025-01-09 16:38:11,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1144, PETRI_PLACES=118, PETRI_TRANSITIONS=86} [2025-01-09 16:38:11,830 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2025-01-09 16:38:11,830 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 86 transitions, 1144 flow [2025-01-09 16:38:11,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:11,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:11,830 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] [2025-01-09 16:38:11,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-01-09 16:38:11,831 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:11,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:11,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2015717942, now seen corresponding path program 6 times [2025-01-09 16:38:11,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:11,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444401558] [2025-01-09 16:38:11,831 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:11,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:11,838 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:11,843 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:11,843 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-01-09 16:38:11,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:12,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:12,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444401558] [2025-01-09 16:38:12,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444401558] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:12,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:12,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:12,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021670127] [2025-01-09 16:38:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:12,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:12,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:12,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:12,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:12,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:12,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 86 transitions, 1144 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:12,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:12,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:12,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:12,387 INFO L124 PetriNetUnfolderBase]: 675/1283 cut-off events. [2025-01-09 16:38:12,387 INFO L125 PetriNetUnfolderBase]: For 6321/6356 co-relation queries the response was YES. [2025-01-09 16:38:12,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 1283 events. 675/1283 cut-off events. For 6321/6356 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7272 event pairs, 292 based on Foata normal form. 5/1283 useless extension candidates. Maximal degree in co-relation 5834. Up to 635 conditions per place. [2025-01-09 16:38:12,402 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 72 selfloop transitions, 35 changer transitions 4/114 dead transitions. [2025-01-09 16:38:12,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 114 transitions, 1488 flow [2025-01-09 16:38:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:12,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2025-01-09 16:38:12,407 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2025-01-09 16:38:12,407 INFO L175 Difference]: Start difference. First operand has 118 places, 86 transitions, 1144 flow. Second operand 9 states and 104 transitions. [2025-01-09 16:38:12,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 114 transitions, 1488 flow [2025-01-09 16:38:12,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 114 transitions, 1408 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-01-09 16:38:12,424 INFO L231 Difference]: Finished difference. Result has 121 places, 85 transitions, 1125 flow [2025-01-09 16:38:12,425 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1125, PETRI_PLACES=121, PETRI_TRANSITIONS=85} [2025-01-09 16:38:12,425 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 95 predicate places. [2025-01-09 16:38:12,425 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 85 transitions, 1125 flow [2025-01-09 16:38:12,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:12,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:12,425 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] [2025-01-09 16:38:12,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-01-09 16:38:12,425 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:12,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1982118714, now seen corresponding path program 7 times [2025-01-09 16:38:12,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:12,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515414845] [2025-01-09 16:38:12,426 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:38:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:12,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:12,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:12,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:12,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:12,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:12,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515414845] [2025-01-09 16:38:12,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515414845] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:12,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:12,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:12,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620236030] [2025-01-09 16:38:12,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:12,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:12,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:12,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:12,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:12,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:12,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 85 transitions, 1125 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:12,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:12,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:12,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:12,863 INFO L124 PetriNetUnfolderBase]: 643/1210 cut-off events. [2025-01-09 16:38:12,864 INFO L125 PetriNetUnfolderBase]: For 5999/6034 co-relation queries the response was YES. [2025-01-09 16:38:12,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5630 conditions, 1210 events. 643/1210 cut-off events. For 5999/6034 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6666 event pairs, 274 based on Foata normal form. 5/1210 useless extension candidates. Maximal degree in co-relation 5584. Up to 635 conditions per place. [2025-01-09 16:38:12,871 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 71 selfloop transitions, 32 changer transitions 8/114 dead transitions. [2025-01-09 16:38:12,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 114 transitions, 1449 flow [2025-01-09 16:38:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:12,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2025-01-09 16:38:12,872 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-01-09 16:38:12,872 INFO L175 Difference]: Start difference. First operand has 121 places, 85 transitions, 1125 flow. Second operand 9 states and 105 transitions. [2025-01-09 16:38:12,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 114 transitions, 1449 flow [2025-01-09 16:38:12,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 114 transitions, 1374 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:12,884 INFO L231 Difference]: Finished difference. Result has 120 places, 82 transitions, 1063 flow [2025-01-09 16:38:12,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1063, PETRI_PLACES=120, PETRI_TRANSITIONS=82} [2025-01-09 16:38:12,884 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 94 predicate places. [2025-01-09 16:38:12,884 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 82 transitions, 1063 flow [2025-01-09 16:38:12,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:12,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:12,885 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] [2025-01-09 16:38:12,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-01-09 16:38:12,885 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:12,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 102686848, now seen corresponding path program 4 times [2025-01-09 16:38:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:12,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252174117] [2025-01-09 16:38:12,886 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:12,890 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:12,894 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:12,894 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:12,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:12,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:12,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252174117] [2025-01-09 16:38:12,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252174117] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:12,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:12,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:38:12,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376175175] [2025-01-09 16:38:13,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:13,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:13,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:13,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:13,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:38:13,019 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:13,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 82 transitions, 1063 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:13,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:13,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:13,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:13,230 INFO L124 PetriNetUnfolderBase]: 610/1136 cut-off events. [2025-01-09 16:38:13,230 INFO L125 PetriNetUnfolderBase]: For 5752/5785 co-relation queries the response was YES. [2025-01-09 16:38:13,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5365 conditions, 1136 events. 610/1136 cut-off events. For 5752/5785 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6084 event pairs, 254 based on Foata normal form. 4/1136 useless extension candidates. Maximal degree in co-relation 5319. Up to 588 conditions per place. [2025-01-09 16:38:13,236 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 71 selfloop transitions, 30 changer transitions 3/107 dead transitions. [2025-01-09 16:38:13,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 107 transitions, 1367 flow [2025-01-09 16:38:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2025-01-09 16:38:13,237 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2025-01-09 16:38:13,237 INFO L175 Difference]: Start difference. First operand has 120 places, 82 transitions, 1063 flow. Second operand 7 states and 90 transitions. [2025-01-09 16:38:13,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 107 transitions, 1367 flow [2025-01-09 16:38:13,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 107 transitions, 1291 flow, removed 1 selfloop flow, removed 9 redundant places. [2025-01-09 16:38:13,247 INFO L231 Difference]: Finished difference. Result has 115 places, 80 transitions, 1011 flow [2025-01-09 16:38:13,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1011, PETRI_PLACES=115, PETRI_TRANSITIONS=80} [2025-01-09 16:38:13,248 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 89 predicate places. [2025-01-09 16:38:13,248 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 80 transitions, 1011 flow [2025-01-09 16:38:13,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:13,248 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:13,248 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] [2025-01-09 16:38:13,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-01-09 16:38:13,248 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:13,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1349710520, now seen corresponding path program 5 times [2025-01-09 16:38:13,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:13,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049328730] [2025-01-09 16:38:13,249 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:13,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:13,253 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:13,258 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:13,258 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:13,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:13,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:13,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049328730] [2025-01-09 16:38:13,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049328730] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:13,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924831775] [2025-01-09 16:38:13,422 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:13,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:13,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:13,426 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:13,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 16:38:13,477 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:13,493 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:13,494 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:13,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:13,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 16:38:13,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:13,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:13,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:13,602 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:38:13,602 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-01-09 16:38:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:13,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924831775] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:13,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:13,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2025-01-09 16:38:13,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031124384] [2025-01-09 16:38:13,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:13,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:38:13,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:13,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:38:13,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:38:13,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:13,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 80 transitions, 1011 flow. Second operand has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 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) [2025-01-09 16:38:13,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:13,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:13,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:13,935 INFO L124 PetriNetUnfolderBase]: 693/1287 cut-off events. [2025-01-09 16:38:13,935 INFO L125 PetriNetUnfolderBase]: For 7152/7186 co-relation queries the response was YES. [2025-01-09 16:38:13,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6035 conditions, 1287 events. 693/1287 cut-off events. For 7152/7186 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7061 event pairs, 270 based on Foata normal form. 12/1289 useless extension candidates. Maximal degree in co-relation 5991. Up to 600 conditions per place. [2025-01-09 16:38:13,942 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 78 selfloop transitions, 37 changer transitions 0/118 dead transitions. [2025-01-09 16:38:13,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 118 transitions, 1429 flow [2025-01-09 16:38:13,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:13,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2025-01-09 16:38:13,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-01-09 16:38:13,943 INFO L175 Difference]: Start difference. First operand has 115 places, 80 transitions, 1011 flow. Second operand 9 states and 120 transitions. [2025-01-09 16:38:13,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 118 transitions, 1429 flow [2025-01-09 16:38:13,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 1369 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:13,957 INFO L231 Difference]: Finished difference. Result has 119 places, 83 transitions, 1081 flow [2025-01-09 16:38:13,957 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1081, PETRI_PLACES=119, PETRI_TRANSITIONS=83} [2025-01-09 16:38:13,958 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2025-01-09 16:38:13,958 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 83 transitions, 1081 flow [2025-01-09 16:38:13,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 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) [2025-01-09 16:38:13,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:13,958 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] [2025-01-09 16:38:13,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:14,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-09 16:38:14,159 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:14,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:14,160 INFO L85 PathProgramCache]: Analyzing trace with hash 265815764, now seen corresponding path program 8 times [2025-01-09 16:38:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:14,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266031602] [2025-01-09 16:38:14,160 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:14,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:14,167 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:14,171 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:14,172 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:38:14,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:14,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:14,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266031602] [2025-01-09 16:38:14,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266031602] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:14,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:14,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612887889] [2025-01-09 16:38:14,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:14,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:14,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:14,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:14,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:14,365 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:14,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 83 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:14,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:14,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:14,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:14,559 INFO L124 PetriNetUnfolderBase]: 663/1217 cut-off events. [2025-01-09 16:38:14,559 INFO L125 PetriNetUnfolderBase]: For 7382/7417 co-relation queries the response was YES. [2025-01-09 16:38:14,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5915 conditions, 1217 events. 663/1217 cut-off events. For 7382/7417 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6539 event pairs, 305 based on Foata normal form. 5/1209 useless extension candidates. Maximal degree in co-relation 5869. Up to 730 conditions per place. [2025-01-09 16:38:14,566 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 65 selfloop transitions, 34 changer transitions 4/106 dead transitions. [2025-01-09 16:38:14,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 106 transitions, 1358 flow [2025-01-09 16:38:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2025-01-09 16:38:14,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2025-01-09 16:38:14,567 INFO L175 Difference]: Start difference. First operand has 119 places, 83 transitions, 1081 flow. Second operand 9 states and 107 transitions. [2025-01-09 16:38:14,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 106 transitions, 1358 flow [2025-01-09 16:38:14,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 106 transitions, 1292 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:14,579 INFO L231 Difference]: Finished difference. Result has 122 places, 81 transitions, 1050 flow [2025-01-09 16:38:14,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1050, PETRI_PLACES=122, PETRI_TRANSITIONS=81} [2025-01-09 16:38:14,579 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 96 predicate places. [2025-01-09 16:38:14,579 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 81 transitions, 1050 flow [2025-01-09 16:38:14,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:14,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:14,580 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] [2025-01-09 16:38:14,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-01-09 16:38:14,580 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:14,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:14,580 INFO L85 PathProgramCache]: Analyzing trace with hash -140024978, now seen corresponding path program 6 times [2025-01-09 16:38:14,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:14,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723902272] [2025-01-09 16:38:14,581 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:14,585 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:14,594 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:14,594 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:38:14,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:14,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:14,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723902272] [2025-01-09 16:38:14,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723902272] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:14,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:14,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869140436] [2025-01-09 16:38:14,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:14,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:14,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:14,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:14,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:14,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 81 transitions, 1050 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:14,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:14,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:14,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:14,989 INFO L124 PetriNetUnfolderBase]: 661/1213 cut-off events. [2025-01-09 16:38:14,990 INFO L125 PetriNetUnfolderBase]: For 6904/6941 co-relation queries the response was YES. [2025-01-09 16:38:14,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5887 conditions, 1213 events. 661/1213 cut-off events. For 6904/6941 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6510 event pairs, 313 based on Foata normal form. 4/1206 useless extension candidates. Maximal degree in co-relation 5840. Up to 730 conditions per place. [2025-01-09 16:38:14,996 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 66 selfloop transitions, 32 changer transitions 4/105 dead transitions. [2025-01-09 16:38:14,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 105 transitions, 1355 flow [2025-01-09 16:38:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:14,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2025-01-09 16:38:14,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2025-01-09 16:38:14,997 INFO L175 Difference]: Start difference. First operand has 122 places, 81 transitions, 1050 flow. Second operand 9 states and 104 transitions. [2025-01-09 16:38:14,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 105 transitions, 1355 flow [2025-01-09 16:38:15,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 105 transitions, 1287 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:15,009 INFO L231 Difference]: Finished difference. Result has 123 places, 80 transitions, 1032 flow [2025-01-09 16:38:15,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1032, PETRI_PLACES=123, PETRI_TRANSITIONS=80} [2025-01-09 16:38:15,010 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 97 predicate places. [2025-01-09 16:38:15,010 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 80 transitions, 1032 flow [2025-01-09 16:38:15,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:15,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:15,010 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] [2025-01-09 16:38:15,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-01-09 16:38:15,010 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:15,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:15,011 INFO L85 PathProgramCache]: Analyzing trace with hash -522858730, now seen corresponding path program 7 times [2025-01-09 16:38:15,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:15,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201259347] [2025-01-09 16:38:15,011 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:38:15,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:15,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:15,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:15,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:15,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:15,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:15,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201259347] [2025-01-09 16:38:15,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201259347] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:15,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:15,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167119661] [2025-01-09 16:38:15,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:15,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:15,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:15,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:15,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:15,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:15,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 80 transitions, 1032 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:15,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:15,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:15,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:15,511 INFO L124 PetriNetUnfolderBase]: 672/1230 cut-off events. [2025-01-09 16:38:15,511 INFO L125 PetriNetUnfolderBase]: For 7711/7748 co-relation queries the response was YES. [2025-01-09 16:38:15,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6002 conditions, 1230 events. 672/1230 cut-off events. For 7711/7748 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6588 event pairs, 313 based on Foata normal form. 12/1231 useless extension candidates. Maximal degree in co-relation 5954. Up to 740 conditions per place. [2025-01-09 16:38:15,517 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 70 selfloop transitions, 34 changer transitions 0/107 dead transitions. [2025-01-09 16:38:15,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 107 transitions, 1373 flow [2025-01-09 16:38:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:15,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2025-01-09 16:38:15,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2025-01-09 16:38:15,518 INFO L175 Difference]: Start difference. First operand has 123 places, 80 transitions, 1032 flow. Second operand 9 states and 109 transitions. [2025-01-09 16:38:15,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 107 transitions, 1373 flow [2025-01-09 16:38:15,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 107 transitions, 1296 flow, removed 1 selfloop flow, removed 9 redundant places. [2025-01-09 16:38:15,557 INFO L231 Difference]: Finished difference. Result has 123 places, 83 transitions, 1086 flow [2025-01-09 16:38:15,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1086, PETRI_PLACES=123, PETRI_TRANSITIONS=83} [2025-01-09 16:38:15,557 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 97 predicate places. [2025-01-09 16:38:15,557 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 83 transitions, 1086 flow [2025-01-09 16:38:15,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:15,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:15,561 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] [2025-01-09 16:38:15,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-01-09 16:38:15,561 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:15,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:15,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1851556150, now seen corresponding path program 8 times [2025-01-09 16:38:15,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:15,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665776012] [2025-01-09 16:38:15,561 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:15,566 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:15,577 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:15,580 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:15,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:15,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665776012] [2025-01-09 16:38:15,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665776012] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:15,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250176371] [2025-01-09 16:38:15,733 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:15,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:15,737 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:15,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 16:38:15,784 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:15,802 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:15,802 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:15,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:15,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 16:38:15,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:15,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:38:15,850 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-01-09 16:38:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:15,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:15,922 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:38:15,922 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-01-09 16:38:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:15,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250176371] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:15,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:15,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2025-01-09 16:38:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054311947] [2025-01-09 16:38:15,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:15,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:15,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:15,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:15,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:38:15,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:15,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 83 transitions, 1086 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:15,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:15,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:15,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:16,171 INFO L124 PetriNetUnfolderBase]: 686/1284 cut-off events. [2025-01-09 16:38:16,171 INFO L125 PetriNetUnfolderBase]: For 7681/7717 co-relation queries the response was YES. [2025-01-09 16:38:16,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 1284 events. 686/1284 cut-off events. For 7681/7717 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7127 event pairs, 303 based on Foata normal form. 12/1286 useless extension candidates. Maximal degree in co-relation 6077. Up to 735 conditions per place. [2025-01-09 16:38:16,178 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 79 selfloop transitions, 32 changer transitions 0/114 dead transitions. [2025-01-09 16:38:16,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 114 transitions, 1431 flow [2025-01-09 16:38:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2025-01-09 16:38:16,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-01-09 16:38:16,178 INFO L175 Difference]: Start difference. First operand has 123 places, 83 transitions, 1086 flow. Second operand 7 states and 104 transitions. [2025-01-09 16:38:16,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 114 transitions, 1431 flow [2025-01-09 16:38:16,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 114 transitions, 1344 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:16,190 INFO L231 Difference]: Finished difference. Result has 123 places, 84 transitions, 1090 flow [2025-01-09 16:38:16,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1090, PETRI_PLACES=123, PETRI_TRANSITIONS=84} [2025-01-09 16:38:16,190 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 97 predicate places. [2025-01-09 16:38:16,190 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 84 transitions, 1090 flow [2025-01-09 16:38:16,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:16,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:16,191 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] [2025-01-09 16:38:16,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:16,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-01-09 16:38:16,391 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:16,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:16,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1966603584, now seen corresponding path program 9 times [2025-01-09 16:38:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:16,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163612387] [2025-01-09 16:38:16,392 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:16,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:16,398 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:16,404 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:16,404 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:38:16,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:16,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:16,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163612387] [2025-01-09 16:38:16,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163612387] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:16,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:16,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:16,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998185862] [2025-01-09 16:38:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:16,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:16,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:16,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:16,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:16,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:16,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 84 transitions, 1090 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:16,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:16,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:16,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:16,768 INFO L124 PetriNetUnfolderBase]: 660/1222 cut-off events. [2025-01-09 16:38:16,768 INFO L125 PetriNetUnfolderBase]: For 6772/6807 co-relation queries the response was YES. [2025-01-09 16:38:16,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 1222 events. 660/1222 cut-off events. For 6772/6807 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6649 event pairs, 308 based on Foata normal form. 4/1212 useless extension candidates. Maximal degree in co-relation 5845. Up to 747 conditions per place. [2025-01-09 16:38:16,773 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 66 selfloop transitions, 33 changer transitions 3/105 dead transitions. [2025-01-09 16:38:16,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 105 transitions, 1342 flow [2025-01-09 16:38:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:16,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2025-01-09 16:38:16,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-01-09 16:38:16,774 INFO L175 Difference]: Start difference. First operand has 123 places, 84 transitions, 1090 flow. Second operand 9 states and 105 transitions. [2025-01-09 16:38:16,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 105 transitions, 1342 flow [2025-01-09 16:38:16,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 105 transitions, 1292 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:16,785 INFO L231 Difference]: Finished difference. Result has 127 places, 82 transitions, 1072 flow [2025-01-09 16:38:16,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1072, PETRI_PLACES=127, PETRI_TRANSITIONS=82} [2025-01-09 16:38:16,785 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 101 predicate places. [2025-01-09 16:38:16,785 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 82 transitions, 1072 flow [2025-01-09 16:38:16,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:16,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:16,785 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] [2025-01-09 16:38:16,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-01-09 16:38:16,785 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:16,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash 740652718, now seen corresponding path program 9 times [2025-01-09 16:38:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:16,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672056610] [2025-01-09 16:38:16,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:16,790 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:16,794 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:16,795 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:16,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:16,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:16,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672056610] [2025-01-09 16:38:16,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672056610] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:16,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:16,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:16,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873384141] [2025-01-09 16:38:16,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:16,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:16,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:16,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:16,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:16,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:16,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 82 transitions, 1072 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:16,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:16,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:16,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:17,145 INFO L124 PetriNetUnfolderBase]: 658/1220 cut-off events. [2025-01-09 16:38:17,145 INFO L125 PetriNetUnfolderBase]: For 6801/6839 co-relation queries the response was YES. [2025-01-09 16:38:17,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5872 conditions, 1220 events. 658/1220 cut-off events. For 6801/6839 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6671 event pairs, 308 based on Foata normal form. 5/1214 useless extension candidates. Maximal degree in co-relation 5824. Up to 747 conditions per place. [2025-01-09 16:38:17,151 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 65 selfloop transitions, 30 changer transitions 5/103 dead transitions. [2025-01-09 16:38:17,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 103 transitions, 1341 flow [2025-01-09 16:38:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:17,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2025-01-09 16:38:17,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2025-01-09 16:38:17,151 INFO L175 Difference]: Start difference. First operand has 127 places, 82 transitions, 1072 flow. Second operand 9 states and 103 transitions. [2025-01-09 16:38:17,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 103 transitions, 1341 flow [2025-01-09 16:38:17,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 103 transitions, 1263 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:17,162 INFO L231 Difference]: Finished difference. Result has 126 places, 80 transitions, 1028 flow [2025-01-09 16:38:17,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1028, PETRI_PLACES=126, PETRI_TRANSITIONS=80} [2025-01-09 16:38:17,163 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 100 predicate places. [2025-01-09 16:38:17,163 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 80 transitions, 1028 flow [2025-01-09 16:38:17,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:17,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:17,163 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] [2025-01-09 16:38:17,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-01-09 16:38:17,163 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:17,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1587256056, now seen corresponding path program 10 times [2025-01-09 16:38:17,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:17,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152189728] [2025-01-09 16:38:17,164 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:17,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:17,168 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:17,176 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:17,179 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:17,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:17,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:17,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152189728] [2025-01-09 16:38:17,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152189728] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:17,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:38:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549884216] [2025-01-09 16:38:17,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:17,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:17,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:17,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:17,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:38:17,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:17,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 80 transitions, 1028 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:17,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:17,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:17,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:17,474 INFO L124 PetriNetUnfolderBase]: 625/1146 cut-off events. [2025-01-09 16:38:17,474 INFO L125 PetriNetUnfolderBase]: For 6577/6613 co-relation queries the response was YES. [2025-01-09 16:38:17,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5589 conditions, 1146 events. 625/1146 cut-off events. For 6577/6613 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6085 event pairs, 288 based on Foata normal form. 4/1140 useless extension candidates. Maximal degree in co-relation 5541. Up to 700 conditions per place. [2025-01-09 16:38:17,479 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 64 selfloop transitions, 28 changer transitions 3/98 dead transitions. [2025-01-09 16:38:17,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 98 transitions, 1260 flow [2025-01-09 16:38:17,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2025-01-09 16:38:17,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-01-09 16:38:17,480 INFO L175 Difference]: Start difference. First operand has 126 places, 80 transitions, 1028 flow. Second operand 7 states and 91 transitions. [2025-01-09 16:38:17,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 98 transitions, 1260 flow [2025-01-09 16:38:17,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 98 transitions, 1179 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-01-09 16:38:17,491 INFO L231 Difference]: Finished difference. Result has 119 places, 78 transitions, 968 flow [2025-01-09 16:38:17,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=968, PETRI_PLACES=119, PETRI_TRANSITIONS=78} [2025-01-09 16:38:17,491 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2025-01-09 16:38:17,491 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 78 transitions, 968 flow [2025-01-09 16:38:17,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:17,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:17,492 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] [2025-01-09 16:38:17,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-01-09 16:38:17,492 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:17,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1278508296, now seen corresponding path program 10 times [2025-01-09 16:38:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:17,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642797614] [2025-01-09 16:38:17,492 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:17,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:17,500 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:17,503 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:17,503 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:17,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:17,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:17,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642797614] [2025-01-09 16:38:17,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642797614] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:17,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:17,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:38:17,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185362279] [2025-01-09 16:38:17,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:17,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:17,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:17,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:17,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:38:17,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:17,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 78 transitions, 968 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:17,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:17,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:17,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:17,785 INFO L124 PetriNetUnfolderBase]: 593/1077 cut-off events. [2025-01-09 16:38:17,786 INFO L125 PetriNetUnfolderBase]: For 6370/6405 co-relation queries the response was YES. [2025-01-09 16:38:17,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5338 conditions, 1077 events. 593/1077 cut-off events. For 6370/6405 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5556 event pairs, 276 based on Foata normal form. 5/1073 useless extension candidates. Maximal degree in co-relation 5293. Up to 700 conditions per place. [2025-01-09 16:38:17,791 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 62 selfloop transitions, 26 changer transitions 4/95 dead transitions. [2025-01-09 16:38:17,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 95 transitions, 1194 flow [2025-01-09 16:38:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:17,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2025-01-09 16:38:17,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45408163265306123 [2025-01-09 16:38:17,791 INFO L175 Difference]: Start difference. First operand has 119 places, 78 transitions, 968 flow. Second operand 7 states and 89 transitions. [2025-01-09 16:38:17,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 95 transitions, 1194 flow [2025-01-09 16:38:17,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 95 transitions, 1140 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:17,801 INFO L231 Difference]: Finished difference. Result has 118 places, 76 transitions, 937 flow [2025-01-09 16:38:17,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=118, PETRI_TRANSITIONS=76} [2025-01-09 16:38:17,801 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2025-01-09 16:38:17,801 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 76 transitions, 937 flow [2025-01-09 16:38:17,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:17,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:17,801 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] [2025-01-09 16:38:17,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-01-09 16:38:17,802 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:17,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash -252088840, now seen corresponding path program 11 times [2025-01-09 16:38:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:17,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492683186] [2025-01-09 16:38:17,802 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:17,809 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:17,813 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:17,814 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:17,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:17,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492683186] [2025-01-09 16:38:17,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492683186] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:17,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65577051] [2025-01-09 16:38:17,969 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:17,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:17,972 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:17,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 16:38:18,025 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:18,047 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:18,048 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:18,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:18,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 16:38:18,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:18,104 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:38:18,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65577051] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:18,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:38:18,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 11 [2025-01-09 16:38:18,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731409102] [2025-01-09 16:38:18,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:18,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:18,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:18,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:18,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:38:18,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:18,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 76 transitions, 937 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:18,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:18,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:18,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:18,340 INFO L124 PetriNetUnfolderBase]: 688/1247 cut-off events. [2025-01-09 16:38:18,340 INFO L125 PetriNetUnfolderBase]: For 7766/7805 co-relation queries the response was YES. [2025-01-09 16:38:18,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 1247 events. 688/1247 cut-off events. For 7766/7805 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6689 event pairs, 236 based on Foata normal form. 10/1253 useless extension candidates. Maximal degree in co-relation 6203. Up to 622 conditions per place. [2025-01-09 16:38:18,347 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 84 selfloop transitions, 36 changer transitions 0/123 dead transitions. [2025-01-09 16:38:18,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 1539 flow [2025-01-09 16:38:18,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:18,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2025-01-09 16:38:18,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2025-01-09 16:38:18,347 INFO L175 Difference]: Start difference. First operand has 118 places, 76 transitions, 937 flow. Second operand 7 states and 104 transitions. [2025-01-09 16:38:18,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 1539 flow [2025-01-09 16:38:18,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 123 transitions, 1477 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-01-09 16:38:18,360 INFO L231 Difference]: Finished difference. Result has 121 places, 85 transitions, 1142 flow [2025-01-09 16:38:18,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1142, PETRI_PLACES=121, PETRI_TRANSITIONS=85} [2025-01-09 16:38:18,360 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 95 predicate places. [2025-01-09 16:38:18,360 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 85 transitions, 1142 flow [2025-01-09 16:38:18,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:18,360 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:18,360 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] [2025-01-09 16:38:18,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 16:38:18,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:18,561 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:18,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash -109664948, now seen corresponding path program 12 times [2025-01-09 16:38:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:18,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402081361] [2025-01-09 16:38:18,561 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:18,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:18,566 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:18,575 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:18,575 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:38:18,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:18,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:18,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402081361] [2025-01-09 16:38:18,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402081361] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:18,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233383407] [2025-01-09 16:38:18,857 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:18,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:18,858 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:18,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 16:38:18,909 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:18,927 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:18,927 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:38:18,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:18,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 16:38:18,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:19,029 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-09 16:38:19,030 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-01-09 16:38:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:19,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:19,126 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:38:19,126 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-01-09 16:38:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:19,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233383407] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:19,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:19,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2025-01-09 16:38:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115672307] [2025-01-09 16:38:19,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:19,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:38:19,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:19,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:38:19,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:38:19,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:19,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 85 transitions, 1142 flow. Second operand has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 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) [2025-01-09 16:38:19,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:19,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:19,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:19,461 INFO L124 PetriNetUnfolderBase]: 768/1394 cut-off events. [2025-01-09 16:38:19,462 INFO L125 PetriNetUnfolderBase]: For 10184/10227 co-relation queries the response was YES. [2025-01-09 16:38:19,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 1394 events. 768/1394 cut-off events. For 10184/10227 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7676 event pairs, 303 based on Foata normal form. 10/1397 useless extension candidates. Maximal degree in co-relation 7310. Up to 754 conditions per place. [2025-01-09 16:38:19,468 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 83 selfloop transitions, 37 changer transitions 0/123 dead transitions. [2025-01-09 16:38:19,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 123 transitions, 1628 flow [2025-01-09 16:38:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:38:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:38:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2025-01-09 16:38:19,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2025-01-09 16:38:19,469 INFO L175 Difference]: Start difference. First operand has 121 places, 85 transitions, 1142 flow. Second operand 10 states and 123 transitions. [2025-01-09 16:38:19,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 123 transitions, 1628 flow [2025-01-09 16:38:19,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 123 transitions, 1558 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-01-09 16:38:19,484 INFO L231 Difference]: Finished difference. Result has 131 places, 90 transitions, 1270 flow [2025-01-09 16:38:19,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1270, PETRI_PLACES=131, PETRI_TRANSITIONS=90} [2025-01-09 16:38:19,484 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 105 predicate places. [2025-01-09 16:38:19,484 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 90 transitions, 1270 flow [2025-01-09 16:38:19,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.4375) internal successors, (119), 16 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) [2025-01-09 16:38:19,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:19,484 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] [2025-01-09 16:38:19,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:19,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-01-09 16:38:19,685 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:19,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash -329348984, now seen corresponding path program 13 times [2025-01-09 16:38:19,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:19,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264985505] [2025-01-09 16:38:19,685 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:38:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:19,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:19,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:19,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:19,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264985505] [2025-01-09 16:38:19,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264985505] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:19,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620845979] [2025-01-09 16:38:19,836 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:38:19,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:19,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:19,839 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:19,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 16:38:19,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:19,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:19,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:19,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:19,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 16:38:19,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:19,947 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-01-09 16:38:19,947 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2025-01-09 16:38:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:19,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:20,019 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2025-01-09 16:38:20,019 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2025-01-09 16:38:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:20,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620845979] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:20,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:20,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2025-01-09 16:38:20,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366642007] [2025-01-09 16:38:20,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:20,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:38:20,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:20,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:38:20,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:38:20,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:20,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 90 transitions, 1270 flow. Second operand has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 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) [2025-01-09 16:38:20,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:20,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:20,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:20,359 INFO L124 PetriNetUnfolderBase]: 733/1338 cut-off events. [2025-01-09 16:38:20,359 INFO L125 PetriNetUnfolderBase]: For 9203/9235 co-relation queries the response was YES. [2025-01-09 16:38:20,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 1338 events. 733/1338 cut-off events. For 9203/9235 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7373 event pairs, 77 based on Foata normal form. 10/1348 useless extension candidates. Maximal degree in co-relation 7203. Up to 693 conditions per place. [2025-01-09 16:38:20,366 INFO L140 encePairwiseOnDemand]: 17/28 looper letters, 84 selfloop transitions, 38 changer transitions 1/126 dead transitions. [2025-01-09 16:38:20,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 126 transitions, 1731 flow [2025-01-09 16:38:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:38:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:38:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2025-01-09 16:38:20,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2025-01-09 16:38:20,367 INFO L175 Difference]: Start difference. First operand has 131 places, 90 transitions, 1270 flow. Second operand 10 states and 113 transitions. [2025-01-09 16:38:20,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 126 transitions, 1731 flow [2025-01-09 16:38:20,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 1675 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-01-09 16:38:20,383 INFO L231 Difference]: Finished difference. Result has 138 places, 92 transitions, 1340 flow [2025-01-09 16:38:20,383 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1340, PETRI_PLACES=138, PETRI_TRANSITIONS=92} [2025-01-09 16:38:20,383 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 112 predicate places. [2025-01-09 16:38:20,383 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 92 transitions, 1340 flow [2025-01-09 16:38:20,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 17 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) [2025-01-09 16:38:20,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:20,383 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] [2025-01-09 16:38:20,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:20,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-01-09 16:38:20,588 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:20,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash -194936128, now seen corresponding path program 11 times [2025-01-09 16:38:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:20,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008650586] [2025-01-09 16:38:20,588 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:20,592 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:20,597 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:20,597 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:20,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:20,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:20,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008650586] [2025-01-09 16:38:20,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008650586] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:20,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936060553] [2025-01-09 16:38:20,831 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:20,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:20,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:20,837 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:20,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 16:38:20,888 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:20,904 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:20,905 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:20,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:20,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-09 16:38:20,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:21,065 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-01-09 16:38:21,065 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 9 [2025-01-09 16:38:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:21,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:21,183 INFO L349 Elim1Store]: treesize reduction 11, result has 85.7 percent of original size [2025-01-09 16:38:21,184 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 77 [2025-01-09 16:38:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936060553] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:21,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:21,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2025-01-09 16:38:21,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323020215] [2025-01-09 16:38:21,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:21,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 16:38:21,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:21,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 16:38:21,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2025-01-09 16:38:21,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-01-09 16:38:21,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 92 transitions, 1340 flow. Second operand has 30 states, 30 states have (on average 5.866666666666666) internal successors, (176), 30 states have internal predecessors, (176), 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) [2025-01-09 16:38:21,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:21,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-01-09 16:38:21,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:22,998 INFO L124 PetriNetUnfolderBase]: 2484/4393 cut-off events. [2025-01-09 16:38:22,998 INFO L125 PetriNetUnfolderBase]: For 34509/34579 co-relation queries the response was YES. [2025-01-09 16:38:23,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24452 conditions, 4393 events. 2484/4393 cut-off events. For 34509/34579 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 29250 event pairs, 544 based on Foata normal form. 38/4431 useless extension candidates. Maximal degree in co-relation 24398. Up to 948 conditions per place. [2025-01-09 16:38:23,022 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 301 selfloop transitions, 141 changer transitions 2/446 dead transitions. [2025-01-09 16:38:23,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 446 transitions, 6229 flow [2025-01-09 16:38:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-09 16:38:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-01-09 16:38:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 423 transitions. [2025-01-09 16:38:23,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3975563909774436 [2025-01-09 16:38:23,023 INFO L175 Difference]: Start difference. First operand has 138 places, 92 transitions, 1340 flow. Second operand 38 states and 423 transitions. [2025-01-09 16:38:23,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 446 transitions, 6229 flow [2025-01-09 16:38:23,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 446 transitions, 5838 flow, removed 48 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:23,082 INFO L231 Difference]: Finished difference. Result has 179 places, 199 transitions, 3418 flow [2025-01-09 16:38:23,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3418, PETRI_PLACES=179, PETRI_TRANSITIONS=199} [2025-01-09 16:38:23,082 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 153 predicate places. [2025-01-09 16:38:23,082 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 199 transitions, 3418 flow [2025-01-09 16:38:23,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.866666666666666) internal successors, (176), 30 states have internal predecessors, (176), 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) [2025-01-09 16:38:23,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:23,082 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] [2025-01-09 16:38:23,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:23,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:23,287 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:23,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:23,287 INFO L85 PathProgramCache]: Analyzing trace with hash -189538548, now seen corresponding path program 14 times [2025-01-09 16:38:23,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:23,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523627420] [2025-01-09 16:38:23,287 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:23,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:23,291 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:23,294 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:23,294 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:38:23,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:23,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:23,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523627420] [2025-01-09 16:38:23,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523627420] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:23,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:23,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:23,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924536559] [2025-01-09 16:38:23,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:23,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:23,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:23,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:23,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:23,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:23,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 199 transitions, 3418 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:23,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:23,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:23,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:23,942 INFO L124 PetriNetUnfolderBase]: 2235/4069 cut-off events. [2025-01-09 16:38:23,942 INFO L125 PetriNetUnfolderBase]: For 33920/34042 co-relation queries the response was YES. [2025-01-09 16:38:23,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23119 conditions, 4069 events. 2235/4069 cut-off events. For 33920/34042 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 27977 event pairs, 819 based on Foata normal form. 30/4079 useless extension candidates. Maximal degree in co-relation 23055. Up to 2409 conditions per place. [2025-01-09 16:38:23,966 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 117 selfloop transitions, 119 changer transitions 0/239 dead transitions. [2025-01-09 16:38:23,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 239 transitions, 4245 flow [2025-01-09 16:38:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2025-01-09 16:38:23,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-01-09 16:38:23,967 INFO L175 Difference]: Start difference. First operand has 179 places, 199 transitions, 3418 flow. Second operand 9 states and 105 transitions. [2025-01-09 16:38:23,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 239 transitions, 4245 flow [2025-01-09 16:38:24,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 239 transitions, 3870 flow, removed 103 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:24,040 INFO L231 Difference]: Finished difference. Result has 183 places, 206 transitions, 3468 flow [2025-01-09 16:38:24,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3468, PETRI_PLACES=183, PETRI_TRANSITIONS=206} [2025-01-09 16:38:24,040 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 157 predicate places. [2025-01-09 16:38:24,040 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 206 transitions, 3468 flow [2025-01-09 16:38:24,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:24,040 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:24,040 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] [2025-01-09 16:38:24,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-01-09 16:38:24,040 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -976716734, now seen corresponding path program 15 times [2025-01-09 16:38:24,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:24,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949545132] [2025-01-09 16:38:24,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:24,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:24,045 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:24,050 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:24,050 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:24,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:24,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949545132] [2025-01-09 16:38:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949545132] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662871809] [2025-01-09 16:38:24,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:24,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:24,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:24,202 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:24,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 16:38:24,256 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:24,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:24,274 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:24,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:24,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 16:38:24,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:24,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 16:38:24,320 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2025-01-09 16:38:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:24,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:24,401 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:38:24,401 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2025-01-09 16:38:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:24,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662871809] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:24,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:24,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2025-01-09 16:38:24,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650805904] [2025-01-09 16:38:24,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:24,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:24,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:24,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:24,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:38:24,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:24,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 206 transitions, 3468 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:24,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:24,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:24,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:24,921 INFO L124 PetriNetUnfolderBase]: 2391/4382 cut-off events. [2025-01-09 16:38:24,921 INFO L125 PetriNetUnfolderBase]: For 34954/35080 co-relation queries the response was YES. [2025-01-09 16:38:24,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24710 conditions, 4382 events. 2391/4382 cut-off events. For 34954/35080 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 30762 event pairs, 929 based on Foata normal form. 30/4391 useless extension candidates. Maximal degree in co-relation 24645. Up to 2503 conditions per place. [2025-01-09 16:38:24,949 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 126 selfloop transitions, 122 changer transitions 0/251 dead transitions. [2025-01-09 16:38:24,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 251 transitions, 4409 flow [2025-01-09 16:38:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2025-01-09 16:38:24,950 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2025-01-09 16:38:24,950 INFO L175 Difference]: Start difference. First operand has 183 places, 206 transitions, 3468 flow. Second operand 7 states and 103 transitions. [2025-01-09 16:38:24,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 251 transitions, 4409 flow [2025-01-09 16:38:25,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 251 transitions, 4141 flow, removed 13 selfloop flow, removed 6 redundant places. [2025-01-09 16:38:25,041 INFO L231 Difference]: Finished difference. Result has 186 places, 219 transitions, 3774 flow [2025-01-09 16:38:25,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3220, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3774, PETRI_PLACES=186, PETRI_TRANSITIONS=219} [2025-01-09 16:38:25,041 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 160 predicate places. [2025-01-09 16:38:25,041 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 219 transitions, 3774 flow [2025-01-09 16:38:25,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:25,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:25,042 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] [2025-01-09 16:38:25,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:25,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:25,246 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:25,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2002244552, now seen corresponding path program 16 times [2025-01-09 16:38:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:25,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999207409] [2025-01-09 16:38:25,246 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:25,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:25,251 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:25,254 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:25,254 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:25,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:25,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999207409] [2025-01-09 16:38:25,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999207409] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:25,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:25,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:38:25,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687037242] [2025-01-09 16:38:25,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:25,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:25,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:25,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:38:25,358 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:25,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 219 transitions, 3774 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:25,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:25,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:25,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:25,792 INFO L124 PetriNetUnfolderBase]: 2361/4347 cut-off events. [2025-01-09 16:38:25,792 INFO L125 PetriNetUnfolderBase]: For 32660/32784 co-relation queries the response was YES. [2025-01-09 16:38:25,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24222 conditions, 4347 events. 2361/4347 cut-off events. For 32660/32784 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 30683 event pairs, 978 based on Foata normal form. 30/4348 useless extension candidates. Maximal degree in co-relation 24154. Up to 2650 conditions per place. [2025-01-09 16:38:25,824 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 121 selfloop transitions, 126 changer transitions 2/252 dead transitions. [2025-01-09 16:38:25,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 252 transitions, 4546 flow [2025-01-09 16:38:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2025-01-09 16:38:25,826 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2025-01-09 16:38:25,826 INFO L175 Difference]: Start difference. First operand has 186 places, 219 transitions, 3774 flow. Second operand 7 states and 100 transitions. [2025-01-09 16:38:25,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 252 transitions, 4546 flow [2025-01-09 16:38:25,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 252 transitions, 4345 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-01-09 16:38:25,913 INFO L231 Difference]: Finished difference. Result has 191 places, 224 transitions, 3942 flow [2025-01-09 16:38:25,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3942, PETRI_PLACES=191, PETRI_TRANSITIONS=224} [2025-01-09 16:38:25,913 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 165 predicate places. [2025-01-09 16:38:25,914 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 224 transitions, 3942 flow [2025-01-09 16:38:25,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:25,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:25,914 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] [2025-01-09 16:38:25,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-01-09 16:38:25,914 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:25,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:25,916 INFO L85 PathProgramCache]: Analyzing trace with hash 419850790, now seen corresponding path program 12 times [2025-01-09 16:38:25,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:25,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086513194] [2025-01-09 16:38:25,916 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:25,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:25,920 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:25,927 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:25,928 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:38:25,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:26,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:26,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086513194] [2025-01-09 16:38:26,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086513194] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:26,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:26,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:26,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414773904] [2025-01-09 16:38:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:26,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:26,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:26,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:26,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:26,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:26,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 224 transitions, 3942 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:26,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:26,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:26,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:26,599 INFO L124 PetriNetUnfolderBase]: 2331/4291 cut-off events. [2025-01-09 16:38:26,600 INFO L125 PetriNetUnfolderBase]: For 28284/28406 co-relation queries the response was YES. [2025-01-09 16:38:26,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23804 conditions, 4291 events. 2331/4291 cut-off events. For 28284/28406 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 30393 event pairs, 831 based on Foata normal form. 12/4273 useless extension candidates. Maximal degree in co-relation 23734. Up to 2643 conditions per place. [2025-01-09 16:38:26,631 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 128 selfloop transitions, 115 changer transitions 11/257 dead transitions. [2025-01-09 16:38:26,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 257 transitions, 4661 flow [2025-01-09 16:38:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2025-01-09 16:38:26,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2025-01-09 16:38:26,632 INFO L175 Difference]: Start difference. First operand has 191 places, 224 transitions, 3942 flow. Second operand 9 states and 100 transitions. [2025-01-09 16:38:26,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 257 transitions, 4661 flow [2025-01-09 16:38:26,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 257 transitions, 4284 flow, removed 22 selfloop flow, removed 14 redundant places. [2025-01-09 16:38:26,748 INFO L231 Difference]: Finished difference. Result has 186 places, 217 transitions, 3642 flow [2025-01-09 16:38:26,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3491, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3642, PETRI_PLACES=186, PETRI_TRANSITIONS=217} [2025-01-09 16:38:26,749 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 160 predicate places. [2025-01-09 16:38:26,749 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 217 transitions, 3642 flow [2025-01-09 16:38:26,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:26,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:26,749 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] [2025-01-09 16:38:26,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2025-01-09 16:38:26,750 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:26,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:26,751 INFO L85 PathProgramCache]: Analyzing trace with hash -568310772, now seen corresponding path program 13 times [2025-01-09 16:38:26,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:26,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139039069] [2025-01-09 16:38:26,752 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:38:26,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:26,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:26,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:26,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:26,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:26,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:26,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139039069] [2025-01-09 16:38:26,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139039069] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:26,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:26,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:26,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153681018] [2025-01-09 16:38:26,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:26,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:26,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:26,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:26,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:26,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:26,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 217 transitions, 3642 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:26,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:26,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:26,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:27,473 INFO L124 PetriNetUnfolderBase]: 2305/4258 cut-off events. [2025-01-09 16:38:27,473 INFO L125 PetriNetUnfolderBase]: For 27197/27316 co-relation queries the response was YES. [2025-01-09 16:38:27,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23216 conditions, 4258 events. 2305/4258 cut-off events. For 27197/27316 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 30104 event pairs, 966 based on Foata normal form. 12/4247 useless extension candidates. Maximal degree in co-relation 23155. Up to 2643 conditions per place. [2025-01-09 16:38:27,500 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 110 selfloop transitions, 122 changer transitions 4/239 dead transitions. [2025-01-09 16:38:27,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 239 transitions, 4237 flow [2025-01-09 16:38:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2025-01-09 16:38:27,501 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2025-01-09 16:38:27,501 INFO L175 Difference]: Start difference. First operand has 186 places, 217 transitions, 3642 flow. Second operand 9 states and 106 transitions. [2025-01-09 16:38:27,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 239 transitions, 4237 flow [2025-01-09 16:38:27,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 239 transitions, 3985 flow, removed 11 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:27,577 INFO L231 Difference]: Finished difference. Result has 184 places, 215 transitions, 3603 flow [2025-01-09 16:38:27,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3603, PETRI_PLACES=184, PETRI_TRANSITIONS=215} [2025-01-09 16:38:27,578 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 158 predicate places. [2025-01-09 16:38:27,578 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 215 transitions, 3603 flow [2025-01-09 16:38:27,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:27,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:27,578 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] [2025-01-09 16:38:27,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2025-01-09 16:38:27,578 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:27,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:27,579 INFO L85 PathProgramCache]: Analyzing trace with hash -768768734, now seen corresponding path program 14 times [2025-01-09 16:38:27,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:27,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101788550] [2025-01-09 16:38:27,579 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:27,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:27,584 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:27,588 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:27,588 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:38:27,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:27,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101788550] [2025-01-09 16:38:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101788550] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:27,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:27,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:27,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882556843] [2025-01-09 16:38:27,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:27,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:27,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:27,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:27,763 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:27,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 215 transitions, 3603 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:27,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:27,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:27,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:28,243 INFO L124 PetriNetUnfolderBase]: 2299/4252 cut-off events. [2025-01-09 16:38:28,244 INFO L125 PetriNetUnfolderBase]: For 25554/25673 co-relation queries the response was YES. [2025-01-09 16:38:28,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22948 conditions, 4252 events. 2299/4252 cut-off events. For 25554/25673 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 30061 event pairs, 865 based on Foata normal form. 12/4241 useless extension candidates. Maximal degree in co-relation 22889. Up to 2643 conditions per place. [2025-01-09 16:38:28,264 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 111 selfloop transitions, 123 changer transitions 4/241 dead transitions. [2025-01-09 16:38:28,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 241 transitions, 4240 flow [2025-01-09 16:38:28,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:28,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2025-01-09 16:38:28,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2025-01-09 16:38:28,265 INFO L175 Difference]: Start difference. First operand has 184 places, 215 transitions, 3603 flow. Second operand 9 states and 101 transitions. [2025-01-09 16:38:28,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 241 transitions, 4240 flow [2025-01-09 16:38:28,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 241 transitions, 3996 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:28,323 INFO L231 Difference]: Finished difference. Result has 185 places, 213 transitions, 3580 flow [2025-01-09 16:38:28,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3580, PETRI_PLACES=185, PETRI_TRANSITIONS=213} [2025-01-09 16:38:28,323 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 159 predicate places. [2025-01-09 16:38:28,323 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 213 transitions, 3580 flow [2025-01-09 16:38:28,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:28,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:28,323 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] [2025-01-09 16:38:28,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2025-01-09 16:38:28,324 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:28,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:28,324 INFO L85 PathProgramCache]: Analyzing trace with hash 191609592, now seen corresponding path program 15 times [2025-01-09 16:38:28,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:28,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98638792] [2025-01-09 16:38:28,324 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:28,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:28,328 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:28,336 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:28,336 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:28,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:28,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:28,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98638792] [2025-01-09 16:38:28,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98638792] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:28,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:28,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:28,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725581647] [2025-01-09 16:38:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:28,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:28,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:28,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:28,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:28,529 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:28,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 213 transitions, 3580 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:28,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:28,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:28,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:29,025 INFO L124 PetriNetUnfolderBase]: 2305/4270 cut-off events. [2025-01-09 16:38:29,025 INFO L125 PetriNetUnfolderBase]: For 26290/26409 co-relation queries the response was YES. [2025-01-09 16:38:29,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23201 conditions, 4270 events. 2305/4270 cut-off events. For 26290/26409 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 30287 event pairs, 865 based on Foata normal form. 12/4259 useless extension candidates. Maximal degree in co-relation 23141. Up to 2643 conditions per place. [2025-01-09 16:38:29,049 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 116 selfloop transitions, 115 changer transitions 9/243 dead transitions. [2025-01-09 16:38:29,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 243 transitions, 4270 flow [2025-01-09 16:38:29,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:29,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2025-01-09 16:38:29,050 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2025-01-09 16:38:29,050 INFO L175 Difference]: Start difference. First operand has 185 places, 213 transitions, 3580 flow. Second operand 9 states and 101 transitions. [2025-01-09 16:38:29,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 243 transitions, 4270 flow [2025-01-09 16:38:29,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 243 transitions, 4018 flow, removed 3 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:29,110 INFO L231 Difference]: Finished difference. Result has 186 places, 211 transitions, 3537 flow [2025-01-09 16:38:29,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3328, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3537, PETRI_PLACES=186, PETRI_TRANSITIONS=211} [2025-01-09 16:38:29,111 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 160 predicate places. [2025-01-09 16:38:29,111 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 211 transitions, 3537 flow [2025-01-09 16:38:29,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:29,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:29,111 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] [2025-01-09 16:38:29,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2025-01-09 16:38:29,111 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:29,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:29,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1963206152, now seen corresponding path program 16 times [2025-01-09 16:38:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141247966] [2025-01-09 16:38:29,112 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:29,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:29,117 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:29,120 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:29,120 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:29,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:29,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:29,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141247966] [2025-01-09 16:38:29,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141247966] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:29,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:29,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:38:29,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098753403] [2025-01-09 16:38:29,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:29,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:29,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:29,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:29,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:38:29,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:29,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 211 transitions, 3537 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:29,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:29,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:29,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:29,600 INFO L124 PetriNetUnfolderBase]: 2287/4238 cut-off events. [2025-01-09 16:38:29,600 INFO L125 PetriNetUnfolderBase]: For 26766/26887 co-relation queries the response was YES. [2025-01-09 16:38:29,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23006 conditions, 4238 events. 2287/4238 cut-off events. For 26766/26887 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 29992 event pairs, 972 based on Foata normal form. 12/4227 useless extension candidates. Maximal degree in co-relation 22945. Up to 2656 conditions per place. [2025-01-09 16:38:29,627 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 116 selfloop transitions, 109 changer transitions 7/235 dead transitions. [2025-01-09 16:38:29,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 235 transitions, 4158 flow [2025-01-09 16:38:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:38:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:38:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2025-01-09 16:38:29,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2025-01-09 16:38:29,628 INFO L175 Difference]: Start difference. First operand has 186 places, 211 transitions, 3537 flow. Second operand 7 states and 93 transitions. [2025-01-09 16:38:29,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 235 transitions, 4158 flow [2025-01-09 16:38:29,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 235 transitions, 3912 flow, removed 8 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:29,692 INFO L231 Difference]: Finished difference. Result has 183 places, 208 transitions, 3466 flow [2025-01-09 16:38:29,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3466, PETRI_PLACES=183, PETRI_TRANSITIONS=208} [2025-01-09 16:38:29,692 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 157 predicate places. [2025-01-09 16:38:29,692 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 208 transitions, 3466 flow [2025-01-09 16:38:29,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2025-01-09 16:38:29,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:29,692 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] [2025-01-09 16:38:29,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2025-01-09 16:38:29,693 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:29,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2015520358, now seen corresponding path program 17 times [2025-01-09 16:38:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:29,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886602747] [2025-01-09 16:38:29,693 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:29,697 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:29,701 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:29,701 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:29,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:29,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886602747] [2025-01-09 16:38:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886602747] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:29,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783828251] [2025-01-09 16:38:29,845 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:29,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:29,847 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:29,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 16:38:29,906 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:29,923 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:29,923 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:29,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:29,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 16:38:29,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:30,034 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:38:30,034 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2025-01-09 16:38:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:30,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:38:30,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783828251] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:30,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:38:30,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2025-01-09 16:38:30,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884978924] [2025-01-09 16:38:30,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:30,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:30,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:30,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:38:30,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:30,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 208 transitions, 3466 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:30,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:30,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:30,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:30,473 INFO L124 PetriNetUnfolderBase]: 2240/4139 cut-off events. [2025-01-09 16:38:30,474 INFO L125 PetriNetUnfolderBase]: For 25521/25643 co-relation queries the response was YES. [2025-01-09 16:38:30,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22283 conditions, 4139 events. 2240/4139 cut-off events. For 25521/25643 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 29095 event pairs, 970 based on Foata normal form. 12/4121 useless extension candidates. Maximal degree in co-relation 22223. Up to 2643 conditions per place. [2025-01-09 16:38:30,499 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 88 selfloop transitions, 129 changer transitions 4/224 dead transitions. [2025-01-09 16:38:30,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 224 transitions, 3957 flow [2025-01-09 16:38:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2025-01-09 16:38:30,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2025-01-09 16:38:30,500 INFO L175 Difference]: Start difference. First operand has 183 places, 208 transitions, 3466 flow. Second operand 9 states and 99 transitions. [2025-01-09 16:38:30,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 224 transitions, 3957 flow [2025-01-09 16:38:30,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 224 transitions, 3669 flow, removed 4 selfloop flow, removed 9 redundant places. [2025-01-09 16:38:30,565 INFO L231 Difference]: Finished difference. Result has 180 places, 206 transitions, 3419 flow [2025-01-09 16:38:30,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3106, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3419, PETRI_PLACES=180, PETRI_TRANSITIONS=206} [2025-01-09 16:38:30,565 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 154 predicate places. [2025-01-09 16:38:30,565 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 206 transitions, 3419 flow [2025-01-09 16:38:30,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:30,565 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:30,565 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] [2025-01-09 16:38:30,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:30,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-01-09 16:38:30,766 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:30,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1458075770, now seen corresponding path program 17 times [2025-01-09 16:38:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:30,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144283120] [2025-01-09 16:38:30,767 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:30,771 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:30,776 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:30,776 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:30,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:30,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144283120] [2025-01-09 16:38:30,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144283120] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089047982] [2025-01-09 16:38:30,957 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:30,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:30,959 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:30,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 16:38:31,013 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:31,029 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:31,029 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:31,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:31,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 16:38:31,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:31,202 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:38:31,202 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2025-01-09 16:38:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:31,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:38:31,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089047982] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:31,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:38:31,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2025-01-09 16:38:31,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976210334] [2025-01-09 16:38:31,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:31,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:31,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:31,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:38:31,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:31,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 206 transitions, 3419 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:31,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:31,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:31,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:31,662 INFO L124 PetriNetUnfolderBase]: 2144/3933 cut-off events. [2025-01-09 16:38:31,662 INFO L125 PetriNetUnfolderBase]: For 23275/23393 co-relation queries the response was YES. [2025-01-09 16:38:31,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21434 conditions, 3933 events. 2144/3933 cut-off events. For 23275/23393 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 27182 event pairs, 786 based on Foata normal form. 15/3925 useless extension candidates. Maximal degree in co-relation 21377. Up to 2466 conditions per place. [2025-01-09 16:38:31,689 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 104 selfloop transitions, 112 changer transitions 6/225 dead transitions. [2025-01-09 16:38:31,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 225 transitions, 3898 flow [2025-01-09 16:38:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2025-01-09 16:38:31,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2025-01-09 16:38:31,690 INFO L175 Difference]: Start difference. First operand has 180 places, 206 transitions, 3419 flow. Second operand 9 states and 98 transitions. [2025-01-09 16:38:31,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 225 transitions, 3898 flow [2025-01-09 16:38:31,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 225 transitions, 3630 flow, removed 14 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:31,746 INFO L231 Difference]: Finished difference. Result has 176 places, 200 transitions, 3261 flow [2025-01-09 16:38:31,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3082, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3261, PETRI_PLACES=176, PETRI_TRANSITIONS=200} [2025-01-09 16:38:31,747 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 150 predicate places. [2025-01-09 16:38:31,747 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 200 transitions, 3261 flow [2025-01-09 16:38:31,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:31,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:31,747 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] [2025-01-09 16:38:31,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:31,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:31,951 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:31,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1921810038, now seen corresponding path program 18 times [2025-01-09 16:38:31,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460115770] [2025-01-09 16:38:31,956 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:31,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:31,967 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:31,974 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 22 statements. [2025-01-09 16:38:31,974 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-01-09 16:38:31,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:32,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:32,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460115770] [2025-01-09 16:38:32,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460115770] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:32,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:32,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:32,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705944713] [2025-01-09 16:38:32,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:32,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:32,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:32,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:32,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:32,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 200 transitions, 3261 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:32,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:32,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:32,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:32,703 INFO L124 PetriNetUnfolderBase]: 2048/3731 cut-off events. [2025-01-09 16:38:32,703 INFO L125 PetriNetUnfolderBase]: For 24121/24234 co-relation queries the response was YES. [2025-01-09 16:38:32,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20801 conditions, 3731 events. 2048/3731 cut-off events. For 24121/24234 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 25203 event pairs, 835 based on Foata normal form. 15/3735 useless extension candidates. Maximal degree in co-relation 20747. Up to 2289 conditions per place. [2025-01-09 16:38:32,730 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 100 selfloop transitions, 107 changer transitions 6/216 dead transitions. [2025-01-09 16:38:32,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 216 transitions, 3688 flow [2025-01-09 16:38:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2025-01-09 16:38:32,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2025-01-09 16:38:32,731 INFO L175 Difference]: Start difference. First operand has 176 places, 200 transitions, 3261 flow. Second operand 9 states and 103 transitions. [2025-01-09 16:38:32,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 216 transitions, 3688 flow [2025-01-09 16:38:32,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 216 transitions, 3552 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-09 16:38:32,791 INFO L231 Difference]: Finished difference. Result has 177 places, 194 transitions, 3228 flow [2025-01-09 16:38:32,791 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3228, PETRI_PLACES=177, PETRI_TRANSITIONS=194} [2025-01-09 16:38:32,791 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 151 predicate places. [2025-01-09 16:38:32,791 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 194 transitions, 3228 flow [2025-01-09 16:38:32,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:32,792 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:32,792 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] [2025-01-09 16:38:32,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2025-01-09 16:38:32,792 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:32,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1256406060, now seen corresponding path program 19 times [2025-01-09 16:38:32,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:32,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350260470] [2025-01-09 16:38:32,793 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:38:32,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:32,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 16:38:32,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:32,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:32,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:33,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350260470] [2025-01-09 16:38:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350260470] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:33,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:33,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:33,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43596406] [2025-01-09 16:38:33,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:33,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:33,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:33,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:33,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:33,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:33,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 194 transitions, 3228 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:33,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:33,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:33,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:33,504 INFO L124 PetriNetUnfolderBase]: 2042/3725 cut-off events. [2025-01-09 16:38:33,504 INFO L125 PetriNetUnfolderBase]: For 24848/24961 co-relation queries the response was YES. [2025-01-09 16:38:33,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20758 conditions, 3725 events. 2042/3725 cut-off events. For 24848/24961 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 25250 event pairs, 844 based on Foata normal form. 15/3729 useless extension candidates. Maximal degree in co-relation 20704. Up to 2289 conditions per place. [2025-01-09 16:38:33,525 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 88 selfloop transitions, 114 changer transitions 6/211 dead transitions. [2025-01-09 16:38:33,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 211 transitions, 3706 flow [2025-01-09 16:38:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2025-01-09 16:38:33,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2025-01-09 16:38:33,526 INFO L175 Difference]: Start difference. First operand has 177 places, 194 transitions, 3228 flow. Second operand 9 states and 99 transitions. [2025-01-09 16:38:33,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 211 transitions, 3706 flow [2025-01-09 16:38:33,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 211 transitions, 3492 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:33,574 INFO L231 Difference]: Finished difference. Result has 177 places, 191 transitions, 3212 flow [2025-01-09 16:38:33,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3212, PETRI_PLACES=177, PETRI_TRANSITIONS=191} [2025-01-09 16:38:33,575 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 151 predicate places. [2025-01-09 16:38:33,575 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 191 transitions, 3212 flow [2025-01-09 16:38:33,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:33,578 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:33,578 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] [2025-01-09 16:38:33,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2025-01-09 16:38:33,579 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:33,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1794261638, now seen corresponding path program 20 times [2025-01-09 16:38:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752309776] [2025-01-09 16:38:33,579 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:33,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:33,586 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-01-09 16:38:33,600 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:38:33,600 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:33,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:33,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:33,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752309776] [2025-01-09 16:38:33,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752309776] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:33,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:33,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411728614] [2025-01-09 16:38:33,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:33,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:33,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:33,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:33,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:33,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 191 transitions, 3212 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:33,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:33,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:33,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:34,194 INFO L124 PetriNetUnfolderBase]: 1946/3509 cut-off events. [2025-01-09 16:38:34,194 INFO L125 PetriNetUnfolderBase]: For 24216/24326 co-relation queries the response was YES. [2025-01-09 16:38:34,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20002 conditions, 3509 events. 1946/3509 cut-off events. For 24216/24326 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 23296 event pairs, 769 based on Foata normal form. 15/3513 useless extension candidates. Maximal degree in co-relation 19948. Up to 2112 conditions per place. [2025-01-09 16:38:34,213 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 85 selfloop transitions, 107 changer transitions 10/205 dead transitions. [2025-01-09 16:38:34,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 205 transitions, 3609 flow [2025-01-09 16:38:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2025-01-09 16:38:34,214 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38492063492063494 [2025-01-09 16:38:34,214 INFO L175 Difference]: Start difference. First operand has 177 places, 191 transitions, 3212 flow. Second operand 9 states and 97 transitions. [2025-01-09 16:38:34,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 205 transitions, 3609 flow [2025-01-09 16:38:34,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 205 transitions, 3379 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:34,262 INFO L231 Difference]: Finished difference. Result has 176 places, 184 transitions, 3069 flow [2025-01-09 16:38:34,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3069, PETRI_PLACES=176, PETRI_TRANSITIONS=184} [2025-01-09 16:38:34,263 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 150 predicate places. [2025-01-09 16:38:34,263 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 184 transitions, 3069 flow [2025-01-09 16:38:34,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:34,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:34,263 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] [2025-01-09 16:38:34,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2025-01-09 16:38:34,263 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:34,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:34,264 INFO L85 PathProgramCache]: Analyzing trace with hash -47718710, now seen corresponding path program 18 times [2025-01-09 16:38:34,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:34,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470396107] [2025-01-09 16:38:34,264 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:34,268 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 2 equivalence classes. [2025-01-09 16:38:34,273 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 16:38:34,273 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:38:34,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:38:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:34,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470396107] [2025-01-09 16:38:34,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470396107] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:34,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813617291] [2025-01-09 16:38:34,419 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:38:34,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:34,422 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:34,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 16:38:34,483 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 2 equivalence classes. [2025-01-09 16:38:34,502 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 16:38:34,502 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:38:34,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:34,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 16:38:34,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:34,792 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:38:34,793 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 17 [2025-01-09 16:38:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:34,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:34,956 INFO L349 Elim1Store]: treesize reduction 15, result has 80.5 percent of original size [2025-01-09 16:38:34,956 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 77 [2025-01-09 16:38:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:35,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813617291] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:35,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:35,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2025-01-09 16:38:35,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914574965] [2025-01-09 16:38:35,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:35,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-09 16:38:35,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:35,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-09 16:38:35,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 16:38:35,345 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:35,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 184 transitions, 3069 flow. Second operand has 33 states, 33 states have (on average 6.757575757575758) internal successors, (223), 33 states have internal predecessors, (223), 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) [2025-01-09 16:38:35,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:35,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:35,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:36,889 INFO L124 PetriNetUnfolderBase]: 3292/5934 cut-off events. [2025-01-09 16:38:36,889 INFO L125 PetriNetUnfolderBase]: For 49908/50089 co-relation queries the response was YES. [2025-01-09 16:38:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34091 conditions, 5934 events. 3292/5934 cut-off events. For 49908/50089 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 42750 event pairs, 1291 based on Foata normal form. 60/5989 useless extension candidates. Maximal degree in co-relation 34037. Up to 2148 conditions per place. [2025-01-09 16:38:36,926 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 233 selfloop transitions, 181 changer transitions 0/417 dead transitions. [2025-01-09 16:38:36,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 417 transitions, 6890 flow [2025-01-09 16:38:36,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 16:38:36,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-01-09 16:38:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 308 transitions. [2025-01-09 16:38:36,928 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2025-01-09 16:38:36,928 INFO L175 Difference]: Start difference. First operand has 176 places, 184 transitions, 3069 flow. Second operand 28 states and 308 transitions. [2025-01-09 16:38:36,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 417 transitions, 6890 flow [2025-01-09 16:38:37,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 417 transitions, 6275 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-01-09 16:38:37,033 INFO L231 Difference]: Finished difference. Result has 190 places, 257 transitions, 4407 flow [2025-01-09 16:38:37,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2718, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4407, PETRI_PLACES=190, PETRI_TRANSITIONS=257} [2025-01-09 16:38:37,033 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 164 predicate places. [2025-01-09 16:38:37,034 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 257 transitions, 4407 flow [2025-01-09 16:38:37,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.757575757575758) internal successors, (223), 33 states have internal predecessors, (223), 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) [2025-01-09 16:38:37,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:37,034 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] [2025-01-09 16:38:37,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:37,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:37,238 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:37,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash 964973822, now seen corresponding path program 19 times [2025-01-09 16:38:37,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:37,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330616114] [2025-01-09 16:38:37,238 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:38:37,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:37,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 16:38:37,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 16:38:37,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:37,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:38:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330616114] [2025-01-09 16:38:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330616114] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:37,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:37,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 16:38:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903792960] [2025-01-09 16:38:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:37,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:37,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:37,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:38:37,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:37,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 257 transitions, 4407 flow. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:37,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:37,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:37,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:38,100 INFO L124 PetriNetUnfolderBase]: 3377/6082 cut-off events. [2025-01-09 16:38:38,101 INFO L125 PetriNetUnfolderBase]: For 59949/60129 co-relation queries the response was YES. [2025-01-09 16:38:38,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35312 conditions, 6082 events. 3377/6082 cut-off events. For 59949/60129 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 44029 event pairs, 1291 based on Foata normal form. 60/6128 useless extension candidates. Maximal degree in co-relation 35256. Up to 3640 conditions per place. [2025-01-09 16:38:38,140 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 96 selfloop transitions, 183 changer transitions 0/282 dead transitions. [2025-01-09 16:38:38,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 282 transitions, 5183 flow [2025-01-09 16:38:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:38:38,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:38:38,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2025-01-09 16:38:38,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2025-01-09 16:38:38,141 INFO L175 Difference]: Start difference. First operand has 190 places, 257 transitions, 4407 flow. Second operand 9 states and 99 transitions. [2025-01-09 16:38:38,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 282 transitions, 5183 flow [2025-01-09 16:38:38,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 282 transitions, 5051 flow, removed 22 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:38,251 INFO L231 Difference]: Finished difference. Result has 191 places, 263 transitions, 4776 flow [2025-01-09 16:38:38,252 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4776, PETRI_PLACES=191, PETRI_TRANSITIONS=263} [2025-01-09 16:38:38,252 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 165 predicate places. [2025-01-09 16:38:38,252 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 263 transitions, 4776 flow [2025-01-09 16:38:38,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:38,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:38,252 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] [2025-01-09 16:38:38,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2025-01-09 16:38:38,252 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:38,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1819315270, now seen corresponding path program 20 times [2025-01-09 16:38:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:38,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452200728] [2025-01-09 16:38:38,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:38,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:38,257 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-09 16:38:38,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 16:38:38,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:38,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:38:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452200728] [2025-01-09 16:38:38,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452200728] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629086106] [2025-01-09 16:38:38,465 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:38,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:38,467 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:38,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 16:38:38,525 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-09 16:38:38,543 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 16:38:38,543 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:38,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:38,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 16:38:38,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:38,815 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:38:38,816 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 17 [2025-01-09 16:38:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:38,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:38,992 INFO L349 Elim1Store]: treesize reduction 15, result has 78.3 percent of original size [2025-01-09 16:38:38,992 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 71 [2025-01-09 16:38:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:38:39,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629086106] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:39,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:39,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2025-01-09 16:38:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900250623] [2025-01-09 16:38:39,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:39,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-09 16:38:39,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:39,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-09 16:38:39,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=896, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 16:38:39,278 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:39,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 263 transitions, 4776 flow. Second operand has 33 states, 33 states have (on average 6.757575757575758) internal successors, (223), 33 states have internal predecessors, (223), 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) [2025-01-09 16:38:39,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:39,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:39,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:40,530 INFO L124 PetriNetUnfolderBase]: 3207/5759 cut-off events. [2025-01-09 16:38:40,530 INFO L125 PetriNetUnfolderBase]: For 49874/50035 co-relation queries the response was YES. [2025-01-09 16:38:40,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33911 conditions, 5759 events. 3207/5759 cut-off events. For 49874/50035 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 41372 event pairs, 1046 based on Foata normal form. 60/5802 useless extension candidates. Maximal degree in co-relation 33854. Up to 2184 conditions per place. [2025-01-09 16:38:40,577 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 230 selfloop transitions, 197 changer transitions 7/437 dead transitions. [2025-01-09 16:38:40,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 437 transitions, 7249 flow [2025-01-09 16:38:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 16:38:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-01-09 16:38:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 311 transitions. [2025-01-09 16:38:40,579 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3830049261083744 [2025-01-09 16:38:40,579 INFO L175 Difference]: Start difference. First operand has 191 places, 263 transitions, 4776 flow. Second operand 29 states and 311 transitions. [2025-01-09 16:38:40,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 437 transitions, 7249 flow [2025-01-09 16:38:40,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 437 transitions, 6947 flow, removed 32 selfloop flow, removed 6 redundant places. [2025-01-09 16:38:40,764 INFO L231 Difference]: Finished difference. Result has 214 places, 282 transitions, 5108 flow [2025-01-09 16:38:40,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4495, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5108, PETRI_PLACES=214, PETRI_TRANSITIONS=282} [2025-01-09 16:38:40,764 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 188 predicate places. [2025-01-09 16:38:40,765 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 282 transitions, 5108 flow [2025-01-09 16:38:40,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.757575757575758) internal successors, (223), 33 states have internal predecessors, (223), 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) [2025-01-09 16:38:40,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:40,765 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] [2025-01-09 16:38:40,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 16:38:40,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:40,966 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:40,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash 115999810, now seen corresponding path program 1 times [2025-01-09 16:38:40,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:40,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651133264] [2025-01-09 16:38:40,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:40,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:38:40,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:38:40,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:40,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:41,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:41,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651133264] [2025-01-09 16:38:41,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651133264] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:41,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960364951] [2025-01-09 16:38:41,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:41,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:41,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:41,053 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:41,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 16:38:41,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:38:41,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:38:41,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:41,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:41,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 16:38:41,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:41,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960364951] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:41,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:41,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2025-01-09 16:38:41,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092143610] [2025-01-09 16:38:41,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:41,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 16:38:41,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:41,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 16:38:41,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2025-01-09 16:38:41,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:41,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 282 transitions, 5108 flow. Second operand has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2025-01-09 16:38:41,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:41,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:41,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:42,173 INFO L124 PetriNetUnfolderBase]: 3242/5823 cut-off events. [2025-01-09 16:38:42,174 INFO L125 PetriNetUnfolderBase]: For 39442/39606 co-relation queries the response was YES. [2025-01-09 16:38:42,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34248 conditions, 5823 events. 3242/5823 cut-off events. For 39442/39606 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 41820 event pairs, 1499 based on Foata normal form. 1/5820 useless extension candidates. Maximal degree in co-relation 34190. Up to 3283 conditions per place. [2025-01-09 16:38:42,221 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 381 selfloop transitions, 20 changer transitions 1/405 dead transitions. [2025-01-09 16:38:42,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 405 transitions, 7206 flow [2025-01-09 16:38:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:38:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:38:42,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2025-01-09 16:38:42,223 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-01-09 16:38:42,223 INFO L175 Difference]: Start difference. First operand has 214 places, 282 transitions, 5108 flow. Second operand 11 states and 143 transitions. [2025-01-09 16:38:42,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 405 transitions, 7206 flow [2025-01-09 16:38:42,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 405 transitions, 6263 flow, removed 25 selfloop flow, removed 33 redundant places. [2025-01-09 16:38:42,326 INFO L231 Difference]: Finished difference. Result has 191 places, 288 transitions, 4410 flow [2025-01-09 16:38:42,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4410, PETRI_PLACES=191, PETRI_TRANSITIONS=288} [2025-01-09 16:38:42,326 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 165 predicate places. [2025-01-09 16:38:42,326 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 288 transitions, 4410 flow [2025-01-09 16:38:42,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.1) internal successors, (142), 20 states have internal predecessors, (142), 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) [2025-01-09 16:38:42,327 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:42,327 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] [2025-01-09 16:38:42,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:42,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-01-09 16:38:42,528 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:42,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:42,528 INFO L85 PathProgramCache]: Analyzing trace with hash 338795420, now seen corresponding path program 1 times [2025-01-09 16:38:42,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:42,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986774512] [2025-01-09 16:38:42,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:42,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:42,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:38:42,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:38:42,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:42,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:42,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986774512] [2025-01-09 16:38:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986774512] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061365981] [2025-01-09 16:38:42,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:42,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:42,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:42,597 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:42,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 16:38:42,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:38:42,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:38:42,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:42,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:42,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 16:38:42,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:42,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:42,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061365981] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:42,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:42,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2025-01-09 16:38:42,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587885377] [2025-01-09 16:38:42,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:42,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:38:42,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:42,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:38:42,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:38:42,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:42,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 288 transitions, 4410 flow. Second operand has 16 states, 16 states have (on average 7.8125) internal successors, (125), 16 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) [2025-01-09 16:38:42,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:42,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:42,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:43,423 INFO L124 PetriNetUnfolderBase]: 2227/4171 cut-off events. [2025-01-09 16:38:43,423 INFO L125 PetriNetUnfolderBase]: For 19167/19328 co-relation queries the response was YES. [2025-01-09 16:38:43,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23306 conditions, 4171 events. 2227/4171 cut-off events. For 19167/19328 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 30088 event pairs, 597 based on Foata normal form. 174/4345 useless extension candidates. Maximal degree in co-relation 23261. Up to 1097 conditions per place. [2025-01-09 16:38:43,458 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 333 selfloop transitions, 90 changer transitions 0/426 dead transitions. [2025-01-09 16:38:43,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 426 transitions, 6345 flow [2025-01-09 16:38:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 16:38:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-09 16:38:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 217 transitions. [2025-01-09 16:38:43,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2025-01-09 16:38:43,459 INFO L175 Difference]: Start difference. First operand has 191 places, 288 transitions, 4410 flow. Second operand 17 states and 217 transitions. [2025-01-09 16:38:43,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 426 transitions, 6345 flow [2025-01-09 16:38:43,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 426 transitions, 6299 flow, removed 9 selfloop flow, removed 10 redundant places. [2025-01-09 16:38:43,532 INFO L231 Difference]: Finished difference. Result has 196 places, 316 transitions, 5089 flow [2025-01-09 16:38:43,532 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5089, PETRI_PLACES=196, PETRI_TRANSITIONS=316} [2025-01-09 16:38:43,532 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 170 predicate places. [2025-01-09 16:38:43,532 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 316 transitions, 5089 flow [2025-01-09 16:38:43,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.8125) internal successors, (125), 16 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) [2025-01-09 16:38:43,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:43,533 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] [2025-01-09 16:38:43,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:43,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-01-09 16:38:43,733 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:43,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:43,734 INFO L85 PathProgramCache]: Analyzing trace with hash -163681332, now seen corresponding path program 2 times [2025-01-09 16:38:43,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:43,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53091607] [2025-01-09 16:38:43,734 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:43,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-01-09 16:38:43,741 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 24 statements. [2025-01-09 16:38:43,741 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 16:38:43,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:38:43,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:43,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53091607] [2025-01-09 16:38:43,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53091607] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:43,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:43,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:38:43,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986498124] [2025-01-09 16:38:43,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:43,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:38:43,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:43,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:38:43,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:38:43,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:43,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 316 transitions, 5089 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:43,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:43,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:43,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:44,205 INFO L124 PetriNetUnfolderBase]: 2330/4375 cut-off events. [2025-01-09 16:38:44,205 INFO L125 PetriNetUnfolderBase]: For 22456/22550 co-relation queries the response was YES. [2025-01-09 16:38:44,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24539 conditions, 4375 events. 2330/4375 cut-off events. For 22456/22550 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 31844 event pairs, 192 based on Foata normal form. 4/4379 useless extension candidates. Maximal degree in co-relation 24494. Up to 1591 conditions per place. [2025-01-09 16:38:44,232 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 343 selfloop transitions, 46 changer transitions 1/393 dead transitions. [2025-01-09 16:38:44,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 393 transitions, 6845 flow [2025-01-09 16:38:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:44,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:44,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-01-09 16:38:44,233 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2025-01-09 16:38:44,233 INFO L175 Difference]: Start difference. First operand has 196 places, 316 transitions, 5089 flow. Second operand 5 states and 74 transitions. [2025-01-09 16:38:44,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 393 transitions, 6845 flow [2025-01-09 16:38:44,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 393 transitions, 6814 flow, removed 5 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:44,298 INFO L231 Difference]: Finished difference. Result has 195 places, 323 transitions, 5313 flow [2025-01-09 16:38:44,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5063, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5313, PETRI_PLACES=195, PETRI_TRANSITIONS=323} [2025-01-09 16:38:44,299 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 169 predicate places. [2025-01-09 16:38:44,299 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 323 transitions, 5313 flow [2025-01-09 16:38:44,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:44,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:44,299 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] [2025-01-09 16:38:44,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2025-01-09 16:38:44,299 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:44,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash 170905918, now seen corresponding path program 3 times [2025-01-09 16:38:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:44,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262113840] [2025-01-09 16:38:44,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:44,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:44,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 24 statements into 2 equivalence classes. [2025-01-09 16:38:44,306 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 24 statements. [2025-01-09 16:38:44,306 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-09 16:38:44,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:44,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:44,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262113840] [2025-01-09 16:38:44,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262113840] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:44,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:44,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 16:38:44,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531162461] [2025-01-09 16:38:44,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:44,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 16:38:44,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:44,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 16:38:44,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 16:38:44,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:44,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 323 transitions, 5313 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:44,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:44,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:44,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:44,780 INFO L124 PetriNetUnfolderBase]: 2330/4369 cut-off events. [2025-01-09 16:38:44,780 INFO L125 PetriNetUnfolderBase]: For 25309/25403 co-relation queries the response was YES. [2025-01-09 16:38:44,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25178 conditions, 4369 events. 2330/4369 cut-off events. For 25309/25403 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 31771 event pairs, 251 based on Foata normal form. 3/4372 useless extension candidates. Maximal degree in co-relation 25130. Up to 2388 conditions per place. [2025-01-09 16:38:44,808 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 326 selfloop transitions, 50 changer transitions 1/380 dead transitions. [2025-01-09 16:38:44,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 380 transitions, 6668 flow [2025-01-09 16:38:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 16:38:44,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-09 16:38:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-01-09 16:38:44,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2025-01-09 16:38:44,809 INFO L175 Difference]: Start difference. First operand has 195 places, 323 transitions, 5313 flow. Second operand 5 states and 76 transitions. [2025-01-09 16:38:44,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 380 transitions, 6668 flow [2025-01-09 16:38:44,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 380 transitions, 6649 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-01-09 16:38:44,887 INFO L231 Difference]: Finished difference. Result has 200 places, 327 transitions, 5522 flow [2025-01-09 16:38:44,887 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5294, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5522, PETRI_PLACES=200, PETRI_TRANSITIONS=327} [2025-01-09 16:38:44,888 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 174 predicate places. [2025-01-09 16:38:44,888 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 327 transitions, 5522 flow [2025-01-09 16:38:44,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:38:44,888 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:44,888 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] [2025-01-09 16:38:44,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2025-01-09 16:38:44,888 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:44,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:44,888 INFO L85 PathProgramCache]: Analyzing trace with hash 831062586, now seen corresponding path program 1 times [2025-01-09 16:38:44,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:44,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605952715] [2025-01-09 16:38:44,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:44,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:44,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:38:44,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:38:44,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:44,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:44,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605952715] [2025-01-09 16:38:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605952715] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104369869] [2025-01-09 16:38:44,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:44,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:44,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:44,956 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:44,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 16:38:45,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-09 16:38:45,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-09 16:38:45,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:45,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:45,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 16:38:45,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:45,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104369869] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:45,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:45,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2025-01-09 16:38:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623108958] [2025-01-09 16:38:45,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:45,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:38:45,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:45,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:38:45,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:38:45,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:45,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 327 transitions, 5522 flow. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 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) [2025-01-09 16:38:45,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:45,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:45,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:45,658 INFO L124 PetriNetUnfolderBase]: 1530/3104 cut-off events. [2025-01-09 16:38:45,658 INFO L125 PetriNetUnfolderBase]: For 22573/22665 co-relation queries the response was YES. [2025-01-09 16:38:45,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18717 conditions, 3104 events. 1530/3104 cut-off events. For 22573/22665 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 22877 event pairs, 487 based on Foata normal form. 160/3264 useless extension candidates. Maximal degree in co-relation 18666. Up to 1161 conditions per place. [2025-01-09 16:38:45,676 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 92 selfloop transitions, 6 changer transitions 293/394 dead transitions. [2025-01-09 16:38:45,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 394 transitions, 6660 flow [2025-01-09 16:38:45,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 16:38:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-09 16:38:45,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 199 transitions. [2025-01-09 16:38:45,681 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4180672268907563 [2025-01-09 16:38:45,681 INFO L175 Difference]: Start difference. First operand has 200 places, 327 transitions, 5522 flow. Second operand 17 states and 199 transitions. [2025-01-09 16:38:45,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 394 transitions, 6660 flow [2025-01-09 16:38:45,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 394 transitions, 6637 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-01-09 16:38:45,741 INFO L231 Difference]: Finished difference. Result has 217 places, 101 transitions, 1412 flow [2025-01-09 16:38:45,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=5387, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1412, PETRI_PLACES=217, PETRI_TRANSITIONS=101} [2025-01-09 16:38:45,741 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2025-01-09 16:38:45,741 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 101 transitions, 1412 flow [2025-01-09 16:38:45,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 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) [2025-01-09 16:38:45,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:45,742 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:45,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-09 16:38:45,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:45,943 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:45,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash 940901690, now seen corresponding path program 2 times [2025-01-09 16:38:45,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:45,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036076669] [2025-01-09 16:38:45,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:45,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:45,948 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:45,952 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:38:45,952 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:45,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:46,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:46,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036076669] [2025-01-09 16:38:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036076669] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:46,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410652592] [2025-01-09 16:38:46,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:46,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:46,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:46,026 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:46,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 16:38:46,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:46,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:38:46,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:46,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:46,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 16:38:46,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:46,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:46,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410652592] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:46,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-09 16:38:46,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2025-01-09 16:38:46,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388213965] [2025-01-09 16:38:46,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:46,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:38:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:46,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:38:46,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2025-01-09 16:38:46,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-01-09 16:38:46,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 101 transitions, 1412 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2025-01-09 16:38:46,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:46,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-01-09 16:38:46,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:46,559 INFO L124 PetriNetUnfolderBase]: 1238/2153 cut-off events. [2025-01-09 16:38:46,559 INFO L125 PetriNetUnfolderBase]: For 13725/13770 co-relation queries the response was YES. [2025-01-09 16:38:46,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12234 conditions, 2153 events. 1238/2153 cut-off events. For 13725/13770 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12340 event pairs, 291 based on Foata normal form. 5/2158 useless extension candidates. Maximal degree in co-relation 12179. Up to 875 conditions per place. [2025-01-09 16:38:46,573 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 136 selfloop transitions, 30 changer transitions 13/181 dead transitions. [2025-01-09 16:38:46,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 181 transitions, 2548 flow [2025-01-09 16:38:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:38:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:38:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2025-01-09 16:38:46,574 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2025-01-09 16:38:46,574 INFO L175 Difference]: Start difference. First operand has 217 places, 101 transitions, 1412 flow. Second operand 10 states and 114 transitions. [2025-01-09 16:38:46,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 181 transitions, 2548 flow [2025-01-09 16:38:46,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 181 transitions, 2222 flow, removed 76 selfloop flow, removed 23 redundant places. [2025-01-09 16:38:46,595 INFO L231 Difference]: Finished difference. Result has 145 places, 103 transitions, 1327 flow [2025-01-09 16:38:46,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1327, PETRI_PLACES=145, PETRI_TRANSITIONS=103} [2025-01-09 16:38:46,596 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 119 predicate places. [2025-01-09 16:38:46,596 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 103 transitions, 1327 flow [2025-01-09 16:38:46,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2025-01-09 16:38:46,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:46,596 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:46,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-09 16:38:46,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2025-01-09 16:38:46,797 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:46,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1056811874, now seen corresponding path program 3 times [2025-01-09 16:38:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329400444] [2025-01-09 16:38:46,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:46,802 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:46,805 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:38:46,805 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:46,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329400444] [2025-01-09 16:38:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329400444] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634143851] [2025-01-09 16:38:46,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:46,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:46,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:46,848 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:46,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-09 16:38:46,911 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:46,929 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:38:46,929 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:46,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:46,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:38:46,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:46,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:47,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634143851] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:47,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:47,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-01-09 16:38:47,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663298776] [2025-01-09 16:38:47,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:47,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 16:38:47,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:47,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 16:38:47,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-01-09 16:38:47,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2025-01-09 16:38:47,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 103 transitions, 1327 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 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) [2025-01-09 16:38:47,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:47,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2025-01-09 16:38:47,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:47,605 INFO L124 PetriNetUnfolderBase]: 1810/3161 cut-off events. [2025-01-09 16:38:47,605 INFO L125 PetriNetUnfolderBase]: For 10883/10883 co-relation queries the response was YES. [2025-01-09 16:38:47,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14653 conditions, 3161 events. 1810/3161 cut-off events. For 10883/10883 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18816 event pairs, 195 based on Foata normal form. 24/3185 useless extension candidates. Maximal degree in co-relation 14607. Up to 557 conditions per place. [2025-01-09 16:38:47,620 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 243 selfloop transitions, 89 changer transitions 2/335 dead transitions. [2025-01-09 16:38:47,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 335 transitions, 3629 flow [2025-01-09 16:38:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 16:38:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-09 16:38:47,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 274 transitions. [2025-01-09 16:38:47,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2025-01-09 16:38:47,622 INFO L175 Difference]: Start difference. First operand has 145 places, 103 transitions, 1327 flow. Second operand 21 states and 274 transitions. [2025-01-09 16:38:47,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 335 transitions, 3629 flow [2025-01-09 16:38:47,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 335 transitions, 3518 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:47,640 INFO L231 Difference]: Finished difference. Result has 169 places, 151 transitions, 2178 flow [2025-01-09 16:38:47,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2178, PETRI_PLACES=169, PETRI_TRANSITIONS=151} [2025-01-09 16:38:47,646 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2025-01-09 16:38:47,646 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 151 transitions, 2178 flow [2025-01-09 16:38:47,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 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) [2025-01-09 16:38:47,646 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:47,646 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:47,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-09 16:38:47,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2025-01-09 16:38:47,847 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:47,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash 686755640, now seen corresponding path program 2 times [2025-01-09 16:38:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908073263] [2025-01-09 16:38:47,848 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:47,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:47,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:38:47,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:47,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:47,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908073263] [2025-01-09 16:38:47,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908073263] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265508030] [2025-01-09 16:38:47,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:47,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:47,945 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:47,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-09 16:38:48,010 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:48,029 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:38:48,029 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:48,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:48,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 16:38:48,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:48,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:48,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:48,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265508030] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:48,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:48,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-01-09 16:38:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700157820] [2025-01-09 16:38:48,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:48,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 16:38:48,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:48,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 16:38:48,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2025-01-09 16:38:48,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2025-01-09 16:38:48,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 151 transitions, 2178 flow. Second operand has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 21 states have internal predecessors, (127), 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) [2025-01-09 16:38:48,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:48,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2025-01-09 16:38:48,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:48,680 INFO L124 PetriNetUnfolderBase]: 2023/3624 cut-off events. [2025-01-09 16:38:48,680 INFO L125 PetriNetUnfolderBase]: For 20952/21030 co-relation queries the response was YES. [2025-01-09 16:38:48,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19124 conditions, 3624 events. 2023/3624 cut-off events. For 20952/21030 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22696 event pairs, 501 based on Foata normal form. 85/3704 useless extension candidates. Maximal degree in co-relation 19067. Up to 1113 conditions per place. [2025-01-09 16:38:48,706 INFO L140 encePairwiseOnDemand]: 19/28 looper letters, 178 selfloop transitions, 55 changer transitions 0/236 dead transitions. [2025-01-09 16:38:48,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 236 transitions, 3602 flow [2025-01-09 16:38:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 16:38:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-09 16:38:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 108 transitions. [2025-01-09 16:38:48,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2025-01-09 16:38:48,707 INFO L175 Difference]: Start difference. First operand has 169 places, 151 transitions, 2178 flow. Second operand 12 states and 108 transitions. [2025-01-09 16:38:48,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 236 transitions, 3602 flow [2025-01-09 16:38:48,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 236 transitions, 3409 flow, removed 17 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:48,743 INFO L231 Difference]: Finished difference. Result has 174 places, 155 transitions, 2262 flow [2025-01-09 16:38:48,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2262, PETRI_PLACES=174, PETRI_TRANSITIONS=155} [2025-01-09 16:38:48,744 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 148 predicate places. [2025-01-09 16:38:48,744 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 155 transitions, 2262 flow [2025-01-09 16:38:48,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0476190476190474) internal successors, (127), 21 states have internal predecessors, (127), 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) [2025-01-09 16:38:48,744 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:48,744 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:48,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:48,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:48,945 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:48,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash -538817214, now seen corresponding path program 4 times [2025-01-09 16:38:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:48,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950272988] [2025-01-09 16:38:48,946 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:48,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:48,951 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:48,952 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 19 of 26 statements. [2025-01-09 16:38:48,952 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-09 16:38:48,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:48,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950272988] [2025-01-09 16:38:48,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950272988] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:38:48,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:38:48,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 16:38:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234721430] [2025-01-09 16:38:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:38:48,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 16:38:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:48,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 16:38:48,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-09 16:38:48,984 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2025-01-09 16:38:48,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 155 transitions, 2262 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2025-01-09 16:38:48,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:48,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2025-01-09 16:38:48,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:49,530 INFO L124 PetriNetUnfolderBase]: 2418/4252 cut-off events. [2025-01-09 16:38:49,530 INFO L125 PetriNetUnfolderBase]: For 25147/25147 co-relation queries the response was YES. [2025-01-09 16:38:49,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22822 conditions, 4252 events. 2418/4252 cut-off events. For 25147/25147 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26742 event pairs, 627 based on Foata normal form. 10/4262 useless extension candidates. Maximal degree in co-relation 22767. Up to 1483 conditions per place. [2025-01-09 16:38:49,554 INFO L140 encePairwiseOnDemand]: 20/28 looper letters, 210 selfloop transitions, 83 changer transitions 6/300 dead transitions. [2025-01-09 16:38:49,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 300 transitions, 4041 flow [2025-01-09 16:38:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 16:38:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-09 16:38:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 170 transitions. [2025-01-09 16:38:49,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46703296703296704 [2025-01-09 16:38:49,559 INFO L175 Difference]: Start difference. First operand has 174 places, 155 transitions, 2262 flow. Second operand 13 states and 170 transitions. [2025-01-09 16:38:49,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 300 transitions, 4041 flow [2025-01-09 16:38:49,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 300 transitions, 3930 flow, removed 3 selfloop flow, removed 9 redundant places. [2025-01-09 16:38:49,609 INFO L231 Difference]: Finished difference. Result has 184 places, 188 transitions, 2836 flow [2025-01-09 16:38:49,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2836, PETRI_PLACES=184, PETRI_TRANSITIONS=188} [2025-01-09 16:38:49,609 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 158 predicate places. [2025-01-09 16:38:49,609 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 188 transitions, 2836 flow [2025-01-09 16:38:49,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2025-01-09 16:38:49,609 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:49,609 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:49,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2025-01-09 16:38:49,610 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:49,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:49,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1891652594, now seen corresponding path program 5 times [2025-01-09 16:38:49,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:49,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363666844] [2025-01-09 16:38:49,610 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:49,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:49,615 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:49,618 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:38:49,619 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:49,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363666844] [2025-01-09 16:38:49,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363666844] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435457247] [2025-01-09 16:38:49,681 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:38:49,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:49,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:49,683 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:49,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-09 16:38:49,748 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-09 16:38:49,767 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 16:38:49,767 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:49,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:49,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 16:38:49,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:49,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 16:38:49,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435457247] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:49,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:49,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-01-09 16:38:49,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033061392] [2025-01-09 16:38:49,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:49,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 16:38:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:49,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 16:38:49,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2025-01-09 16:38:50,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 28 [2025-01-09 16:38:50,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 188 transitions, 2836 flow. Second operand has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 23 states have internal predecessors, (127), 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) [2025-01-09 16:38:50,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:50,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 28 [2025-01-09 16:38:50,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:50,638 INFO L124 PetriNetUnfolderBase]: 2323/4058 cut-off events. [2025-01-09 16:38:50,638 INFO L125 PetriNetUnfolderBase]: For 27840/27840 co-relation queries the response was YES. [2025-01-09 16:38:50,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22804 conditions, 4058 events. 2323/4058 cut-off events. For 27840/27840 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 24967 event pairs, 502 based on Foata normal form. 70/4128 useless extension candidates. Maximal degree in co-relation 22743. Up to 1080 conditions per place. [2025-01-09 16:38:50,667 INFO L140 encePairwiseOnDemand]: 16/28 looper letters, 198 selfloop transitions, 110 changer transitions 0/309 dead transitions. [2025-01-09 16:38:50,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 309 transitions, 4621 flow [2025-01-09 16:38:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 16:38:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-09 16:38:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 161 transitions. [2025-01-09 16:38:50,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.359375 [2025-01-09 16:38:50,668 INFO L175 Difference]: Start difference. First operand has 184 places, 188 transitions, 2836 flow. Second operand 16 states and 161 transitions. [2025-01-09 16:38:50,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 309 transitions, 4621 flow [2025-01-09 16:38:50,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 309 transitions, 4456 flow, removed 36 selfloop flow, removed 6 redundant places. [2025-01-09 16:38:50,738 INFO L231 Difference]: Finished difference. Result has 193 places, 198 transitions, 3159 flow [2025-01-09 16:38:50,738 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3159, PETRI_PLACES=193, PETRI_TRANSITIONS=198} [2025-01-09 16:38:50,738 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 167 predicate places. [2025-01-09 16:38:50,738 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 198 transitions, 3159 flow [2025-01-09 16:38:50,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 23 states have internal predecessors, (127), 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) [2025-01-09 16:38:50,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:50,743 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:50,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-09 16:38:50,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2025-01-09 16:38:50,943 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:50,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash -155140818, now seen corresponding path program 1 times [2025-01-09 16:38:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091057901] [2025-01-09 16:38:50,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:50,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 16:38:50,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:38:50,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:50,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:51,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:51,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091057901] [2025-01-09 16:38:51,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091057901] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:51,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320750015] [2025-01-09 16:38:51,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:38:51,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:51,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:51,270 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:51,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-09 16:38:51,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 16:38:51,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:38:51,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:38:51,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:51,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 16:38:51,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:51,472 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2025-01-09 16:38:51,473 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 24 [2025-01-09 16:38:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:51,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:51,690 INFO L349 Elim1Store]: treesize reduction 28, result has 61.6 percent of original size [2025-01-09 16:38:51,690 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 70 [2025-01-09 16:38:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320750015] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:51,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 25 [2025-01-09 16:38:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323364377] [2025-01-09 16:38:51,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:51,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 16:38:51,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:51,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 16:38:51,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2025-01-09 16:38:51,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:51,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 198 transitions, 3159 flow. Second operand has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 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) [2025-01-09 16:38:51,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:51,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:51,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:52,748 INFO L124 PetriNetUnfolderBase]: 2123/3807 cut-off events. [2025-01-09 16:38:52,748 INFO L125 PetriNetUnfolderBase]: For 29052/29137 co-relation queries the response was YES. [2025-01-09 16:38:52,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21907 conditions, 3807 events. 2123/3807 cut-off events. For 29052/29137 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 24471 event pairs, 546 based on Foata normal form. 5/3793 useless extension candidates. Maximal degree in co-relation 21848. Up to 1585 conditions per place. [2025-01-09 16:38:52,777 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 194 selfloop transitions, 81 changer transitions 6/295 dead transitions. [2025-01-09 16:38:52,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 295 transitions, 4672 flow [2025-01-09 16:38:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 16:38:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-09 16:38:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2025-01-09 16:38:52,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40934065934065933 [2025-01-09 16:38:52,778 INFO L175 Difference]: Start difference. First operand has 193 places, 198 transitions, 3159 flow. Second operand 13 states and 149 transitions. [2025-01-09 16:38:52,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 295 transitions, 4672 flow [2025-01-09 16:38:52,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 295 transitions, 4629 flow, removed 15 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:52,840 INFO L231 Difference]: Finished difference. Result has 202 places, 203 transitions, 3406 flow [2025-01-09 16:38:52,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3132, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3406, PETRI_PLACES=202, PETRI_TRANSITIONS=203} [2025-01-09 16:38:52,841 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2025-01-09 16:38:52,841 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 203 transitions, 3406 flow [2025-01-09 16:38:52,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.32) internal successors, (183), 25 states have internal predecessors, (183), 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) [2025-01-09 16:38:52,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:52,841 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:52,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:53,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:53,043 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:53,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:53,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1391152042, now seen corresponding path program 2 times [2025-01-09 16:38:53,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:53,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353884361] [2025-01-09 16:38:53,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:53,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:53,049 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:38:53,061 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:38:53,061 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:53,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:38:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353884361] [2025-01-09 16:38:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353884361] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213855754] [2025-01-09 16:38:53,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:38:53,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:53,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:53,356 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:53,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-01-09 16:38:53,423 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:38:53,444 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:38:53,444 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:38:53,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:53,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 16:38:53,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:53,618 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:38:53,618 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2025-01-09 16:38:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:53,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:53,771 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:38:53,771 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 74 [2025-01-09 16:38:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:53,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213855754] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:53,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:53,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 9] total 29 [2025-01-09 16:38:53,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063173577] [2025-01-09 16:38:53,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:53,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 16:38:53,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:53,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 16:38:53,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=706, Unknown=0, NotChecked=0, Total=812 [2025-01-09 16:38:54,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:54,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 203 transitions, 3406 flow. Second operand has 29 states, 29 states have (on average 7.310344827586207) internal successors, (212), 29 states have internal predecessors, (212), 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) [2025-01-09 16:38:54,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:54,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:54,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:55,897 INFO L124 PetriNetUnfolderBase]: 5212/9553 cut-off events. [2025-01-09 16:38:55,897 INFO L125 PetriNetUnfolderBase]: For 75171/75397 co-relation queries the response was YES. [2025-01-09 16:38:55,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54706 conditions, 9553 events. 5212/9553 cut-off events. For 75171/75397 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 72670 event pairs, 1067 based on Foata normal form. 8/9526 useless extension candidates. Maximal degree in co-relation 54643. Up to 2054 conditions per place. [2025-01-09 16:38:55,977 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 377 selfloop transitions, 269 changer transitions 20/680 dead transitions. [2025-01-09 16:38:55,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 680 transitions, 10579 flow [2025-01-09 16:38:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-09 16:38:55,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-01-09 16:38:55,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 437 transitions. [2025-01-09 16:38:55,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4459183673469388 [2025-01-09 16:38:55,981 INFO L175 Difference]: Start difference. First operand has 202 places, 203 transitions, 3406 flow. Second operand 35 states and 437 transitions. [2025-01-09 16:38:55,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 680 transitions, 10579 flow [2025-01-09 16:38:56,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 680 transitions, 10033 flow, removed 78 selfloop flow, removed 8 redundant places. [2025-01-09 16:38:56,188 INFO L231 Difference]: Finished difference. Result has 246 places, 382 transitions, 7175 flow [2025-01-09 16:38:56,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7175, PETRI_PLACES=246, PETRI_TRANSITIONS=382} [2025-01-09 16:38:56,188 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 220 predicate places. [2025-01-09 16:38:56,189 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 382 transitions, 7175 flow [2025-01-09 16:38:56,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.310344827586207) internal successors, (212), 29 states have internal predecessors, (212), 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) [2025-01-09 16:38:56,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:56,189 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:56,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-01-09 16:38:56,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:56,390 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:56,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash -369222158, now seen corresponding path program 3 times [2025-01-09 16:38:56,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:56,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978741922] [2025-01-09 16:38:56,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:56,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:56,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:38:56,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:38:56,406 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:56,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:56,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:56,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978741922] [2025-01-09 16:38:56,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978741922] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:56,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698438605] [2025-01-09 16:38:56,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:38:56,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:56,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:56,590 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:56,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-01-09 16:38:56,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:38:56,680 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:38:56,680 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:38:56,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:56,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-09 16:38:56,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:56,776 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:38:56,776 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2025-01-09 16:38:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:38:56,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:38:56,947 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2025-01-09 16:38:56,947 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 78 [2025-01-09 16:38:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:57,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698438605] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:38:57,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:38:57,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 22 [2025-01-09 16:38:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567993135] [2025-01-09 16:38:57,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:38:57,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 16:38:57,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:38:57,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 16:38:57,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2025-01-09 16:38:57,085 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:38:57,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 382 transitions, 7175 flow. Second operand has 22 states, 22 states have (on average 7.545454545454546) internal successors, (166), 22 states have internal predecessors, (166), 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) [2025-01-09 16:38:57,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:38:57,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:38:57,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:38:58,852 INFO L124 PetriNetUnfolderBase]: 5172/9447 cut-off events. [2025-01-09 16:38:58,852 INFO L125 PetriNetUnfolderBase]: For 105756/106006 co-relation queries the response was YES. [2025-01-09 16:38:58,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59621 conditions, 9447 events. 5172/9447 cut-off events. For 105756/106006 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 71482 event pairs, 1167 based on Foata normal form. 2/9422 useless extension candidates. Maximal degree in co-relation 59540. Up to 4830 conditions per place. [2025-01-09 16:38:58,936 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 271 selfloop transitions, 157 changer transitions 7/449 dead transitions. [2025-01-09 16:38:58,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 449 transitions, 8686 flow [2025-01-09 16:38:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 16:38:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-09 16:38:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 152 transitions. [2025-01-09 16:38:58,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2025-01-09 16:38:58,941 INFO L175 Difference]: Start difference. First operand has 246 places, 382 transitions, 7175 flow. Second operand 14 states and 152 transitions. [2025-01-09 16:38:58,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 449 transitions, 8686 flow [2025-01-09 16:38:59,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 449 transitions, 8523 flow, removed 72 selfloop flow, removed 7 redundant places. [2025-01-09 16:38:59,365 INFO L231 Difference]: Finished difference. Result has 253 places, 389 transitions, 7519 flow [2025-01-09 16:38:59,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7050, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7519, PETRI_PLACES=253, PETRI_TRANSITIONS=389} [2025-01-09 16:38:59,366 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 227 predicate places. [2025-01-09 16:38:59,366 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 389 transitions, 7519 flow [2025-01-09 16:38:59,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.545454545454546) internal successors, (166), 22 states have internal predecessors, (166), 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) [2025-01-09 16:38:59,366 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:38:59,366 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:38:59,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-01-09 16:38:59,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2025-01-09 16:38:59,567 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:38:59,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:38:59,567 INFO L85 PathProgramCache]: Analyzing trace with hash -823374398, now seen corresponding path program 4 times [2025-01-09 16:38:59,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:38:59,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334385892] [2025-01-09 16:38:59,567 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:59,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:38:59,575 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:38:59,579 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:38:59,579 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:59,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:38:59,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:38:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334385892] [2025-01-09 16:38:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334385892] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:38:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788956700] [2025-01-09 16:38:59,669 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:38:59,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:38:59,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:38:59,674 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:38:59,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-01-09 16:38:59,751 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:38:59,771 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:38:59,771 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:38:59,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:38:59,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 16:38:59,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:38:59,925 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2025-01-09 16:38:59,925 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 24 [2025-01-09 16:38:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 16:38:59,944 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:00,080 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:39:00,081 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 74 [2025-01-09 16:39:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:39:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788956700] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:00,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:00,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 9] total 22 [2025-01-09 16:39:00,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444872044] [2025-01-09 16:39:00,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:00,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 16:39:00,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:00,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 16:39:00,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2025-01-09 16:39:00,189 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:39:00,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 389 transitions, 7519 flow. Second operand has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 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) [2025-01-09 16:39:00,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:00,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:39:00,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:02,135 INFO L124 PetriNetUnfolderBase]: 5369/9862 cut-off events. [2025-01-09 16:39:02,135 INFO L125 PetriNetUnfolderBase]: For 112569/112861 co-relation queries the response was YES. [2025-01-09 16:39:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61588 conditions, 9862 events. 5369/9862 cut-off events. For 112569/112861 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 75829 event pairs, 942 based on Foata normal form. 16/9849 useless extension candidates. Maximal degree in co-relation 61506. Up to 3991 conditions per place. [2025-01-09 16:39:02,262 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 257 selfloop transitions, 230 changer transitions 28/529 dead transitions. [2025-01-09 16:39:02,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 529 transitions, 9730 flow [2025-01-09 16:39:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 16:39:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-09 16:39:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 262 transitions. [2025-01-09 16:39:02,263 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4253246753246753 [2025-01-09 16:39:02,263 INFO L175 Difference]: Start difference. First operand has 253 places, 389 transitions, 7519 flow. Second operand 22 states and 262 transitions. [2025-01-09 16:39:02,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 529 transitions, 9730 flow [2025-01-09 16:39:02,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 529 transitions, 9518 flow, removed 10 selfloop flow, removed 8 redundant places. [2025-01-09 16:39:02,727 INFO L231 Difference]: Finished difference. Result has 276 places, 408 transitions, 8198 flow [2025-01-09 16:39:02,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7317, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8198, PETRI_PLACES=276, PETRI_TRANSITIONS=408} [2025-01-09 16:39:02,727 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 250 predicate places. [2025-01-09 16:39:02,728 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 408 transitions, 8198 flow [2025-01-09 16:39:02,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.636363636363637) internal successors, (168), 22 states have internal predecessors, (168), 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) [2025-01-09 16:39:02,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:02,728 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:02,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-01-09 16:39:02,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:02,928 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:39:02,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash 194618026, now seen corresponding path program 5 times [2025-01-09 16:39:02,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:02,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715165411] [2025-01-09 16:39:02,929 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:39:02,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:02,934 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:39:02,940 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:39:02,940 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:39:02,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:39:03,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:03,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715165411] [2025-01-09 16:39:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715165411] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:03,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801152250] [2025-01-09 16:39:03,225 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:39:03,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:03,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:03,227 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:03,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-01-09 16:39:03,301 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:39:03,323 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:39:03,323 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:39:03,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:03,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-09 16:39:03,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:03,488 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2025-01-09 16:39:03,488 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 24 [2025-01-09 16:39:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:39:03,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:03,675 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2025-01-09 16:39:03,675 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 78 [2025-01-09 16:39:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:39:03,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801152250] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:03,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:03,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 25 [2025-01-09 16:39:03,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307358843] [2025-01-09 16:39:03,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:03,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 16:39:03,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:03,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 16:39:03,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2025-01-09 16:39:03,793 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:39:03,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 408 transitions, 8198 flow. Second operand has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 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) [2025-01-09 16:39:03,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:03,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:39:03,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:06,017 INFO L124 PetriNetUnfolderBase]: 5933/11010 cut-off events. [2025-01-09 16:39:06,017 INFO L125 PetriNetUnfolderBase]: For 134159/134485 co-relation queries the response was YES. [2025-01-09 16:39:06,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69780 conditions, 11010 events. 5933/11010 cut-off events. For 134159/134485 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 87141 event pairs, 2792 based on Foata normal form. 22/11008 useless extension candidates. Maximal degree in co-relation 69688. Up to 7890 conditions per place. [2025-01-09 16:39:06,197 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 360 selfloop transitions, 170 changer transitions 35/579 dead transitions. [2025-01-09 16:39:06,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 579 transitions, 11427 flow [2025-01-09 16:39:06,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 16:39:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-01-09 16:39:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 256 transitions. [2025-01-09 16:39:06,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2025-01-09 16:39:06,202 INFO L175 Difference]: Start difference. First operand has 276 places, 408 transitions, 8198 flow. Second operand 24 states and 256 transitions. [2025-01-09 16:39:06,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 579 transitions, 11427 flow [2025-01-09 16:39:06,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 579 transitions, 11069 flow, removed 48 selfloop flow, removed 13 redundant places. [2025-01-09 16:39:06,955 INFO L231 Difference]: Finished difference. Result has 294 places, 465 transitions, 9486 flow [2025-01-09 16:39:06,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=7912, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9486, PETRI_PLACES=294, PETRI_TRANSITIONS=465} [2025-01-09 16:39:06,956 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 268 predicate places. [2025-01-09 16:39:06,956 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 465 transitions, 9486 flow [2025-01-09 16:39:06,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 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) [2025-01-09 16:39:06,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:06,956 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:06,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-01-09 16:39:07,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:07,157 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:39:07,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash 223722754, now seen corresponding path program 6 times [2025-01-09 16:39:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:07,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476746792] [2025-01-09 16:39:07,158 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:39:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:07,163 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:39:07,169 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 23 of 27 statements. [2025-01-09 16:39:07,169 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-01-09 16:39:07,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:39:07,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:07,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476746792] [2025-01-09 16:39:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476746792] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:39:07,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:39:07,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-01-09 16:39:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449705537] [2025-01-09 16:39:07,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:39:07,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 16:39:07,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:07,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 16:39:07,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:39:07,382 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:39:07,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 465 transitions, 9486 flow. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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) [2025-01-09 16:39:07,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:07,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:39:07,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:09,239 INFO L124 PetriNetUnfolderBase]: 5797/10726 cut-off events. [2025-01-09 16:39:09,239 INFO L125 PetriNetUnfolderBase]: For 144804/145139 co-relation queries the response was YES. [2025-01-09 16:39:09,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70810 conditions, 10726 events. 5797/10726 cut-off events. For 144804/145139 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 84143 event pairs, 1581 based on Foata normal form. 2/10685 useless extension candidates. Maximal degree in co-relation 70710. Up to 8770 conditions per place. [2025-01-09 16:39:09,363 INFO L140 encePairwiseOnDemand]: 18/28 looper letters, 343 selfloop transitions, 148 changer transitions 7/512 dead transitions. [2025-01-09 16:39:09,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 512 transitions, 11089 flow [2025-01-09 16:39:09,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 16:39:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-01-09 16:39:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2025-01-09 16:39:09,364 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-01-09 16:39:09,364 INFO L175 Difference]: Start difference. First operand has 294 places, 465 transitions, 9486 flow. Second operand 12 states and 126 transitions. [2025-01-09 16:39:09,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 512 transitions, 11089 flow [2025-01-09 16:39:10,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 512 transitions, 10919 flow, removed 66 selfloop flow, removed 11 redundant places. [2025-01-09 16:39:10,111 INFO L231 Difference]: Finished difference. Result has 291 places, 477 transitions, 9994 flow [2025-01-09 16:39:10,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9316, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9994, PETRI_PLACES=291, PETRI_TRANSITIONS=477} [2025-01-09 16:39:10,111 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 265 predicate places. [2025-01-09 16:39:10,111 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 477 transitions, 9994 flow [2025-01-09 16:39:10,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 states have internal predecessors, (79), 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) [2025-01-09 16:39:10,111 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:10,111 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:10,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2025-01-09 16:39:10,111 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:39:10,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1031911058, now seen corresponding path program 7 times [2025-01-09 16:39:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629500656] [2025-01-09 16:39:10,112 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:39:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:10,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 16:39:10,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:39:10,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:39:10,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:39:10,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629500656] [2025-01-09 16:39:10,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629500656] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:10,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755344845] [2025-01-09 16:39:10,390 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:39:10,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:10,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:10,392 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:10,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-01-09 16:39:10,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 16:39:10,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:39:10,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:39:10,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:10,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 16:39:10,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:10,700 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2025-01-09 16:39:10,700 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 24 [2025-01-09 16:39:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:39:10,723 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:10,880 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2025-01-09 16:39:10,881 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 78 [2025-01-09 16:39:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:39:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755344845] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:10,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:10,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 26 [2025-01-09 16:39:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575375256] [2025-01-09 16:39:10,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:10,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 16:39:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:10,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 16:39:10,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2025-01-09 16:39:11,088 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:39:11,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 477 transitions, 9994 flow. Second operand has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 26 states have internal predecessors, (187), 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) [2025-01-09 16:39:11,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:11,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:39:11,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:14,622 INFO L124 PetriNetUnfolderBase]: 6447/12132 cut-off events. [2025-01-09 16:39:14,623 INFO L125 PetriNetUnfolderBase]: For 160266/160613 co-relation queries the response was YES. [2025-01-09 16:39:14,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77348 conditions, 12132 events. 6447/12132 cut-off events. For 160266/160613 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 98408 event pairs, 2728 based on Foata normal form. 62/12159 useless extension candidates. Maximal degree in co-relation 77250. Up to 7938 conditions per place. [2025-01-09 16:39:14,739 INFO L140 encePairwiseOnDemand]: 14/28 looper letters, 387 selfloop transitions, 229 changer transitions 39/669 dead transitions. [2025-01-09 16:39:14,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 669 transitions, 13110 flow [2025-01-09 16:39:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-09 16:39:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-01-09 16:39:14,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 373 transitions. [2025-01-09 16:39:14,741 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3918067226890756 [2025-01-09 16:39:14,741 INFO L175 Difference]: Start difference. First operand has 291 places, 477 transitions, 9994 flow. Second operand 34 states and 373 transitions. [2025-01-09 16:39:14,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 669 transitions, 13110 flow [2025-01-09 16:39:15,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 669 transitions, 12834 flow, removed 17 selfloop flow, removed 8 redundant places. [2025-01-09 16:39:15,480 INFO L231 Difference]: Finished difference. Result has 331 places, 517 transitions, 11149 flow [2025-01-09 16:39:15,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=9584, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=11149, PETRI_PLACES=331, PETRI_TRANSITIONS=517} [2025-01-09 16:39:15,481 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 305 predicate places. [2025-01-09 16:39:15,481 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 517 transitions, 11149 flow [2025-01-09 16:39:15,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.1923076923076925) internal successors, (187), 26 states have internal predecessors, (187), 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) [2025-01-09 16:39:15,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:15,481 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:15,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-01-09 16:39:15,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:15,686 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:39:15,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:15,687 INFO L85 PathProgramCache]: Analyzing trace with hash -5061074, now seen corresponding path program 8 times [2025-01-09 16:39:15,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:15,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277057884] [2025-01-09 16:39:15,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:39:15,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:15,692 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:39:15,702 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:39:15,702 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:39:15,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 16:39:15,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:15,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277057884] [2025-01-09 16:39:15,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277057884] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:15,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734252406] [2025-01-09 16:39:15,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:39:15,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:15,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:15,931 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:15,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-01-09 16:39:16,013 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:39:16,039 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:39:16,039 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:39:16,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:16,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-09 16:39:16,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:16,255 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:39:16,255 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2025-01-09 16:39:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-09 16:39:16,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:16,486 INFO L349 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2025-01-09 16:39:16,487 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 78 [2025-01-09 16:39:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:39:16,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734252406] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:16,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:16,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 9] total 30 [2025-01-09 16:39:16,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770822907] [2025-01-09 16:39:16,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:16,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 16:39:16,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:16,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 16:39:16,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2025-01-09 16:39:16,703 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:39:16,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 517 transitions, 11149 flow. Second operand has 30 states, 30 states have (on average 7.433333333333334) internal successors, (223), 30 states have internal predecessors, (223), 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) [2025-01-09 16:39:16,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:16,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:39:16,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:39:22,883 INFO L124 PetriNetUnfolderBase]: 13243/24771 cut-off events. [2025-01-09 16:39:22,883 INFO L125 PetriNetUnfolderBase]: For 403581/404383 co-relation queries the response was YES. [2025-01-09 16:39:23,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169134 conditions, 24771 events. 13243/24771 cut-off events. For 403581/404383 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 223105 event pairs, 3370 based on Foata normal form. 16/24741 useless extension candidates. Maximal degree in co-relation 169021. Up to 8862 conditions per place. [2025-01-09 16:39:23,197 INFO L140 encePairwiseOnDemand]: 15/28 looper letters, 796 selfloop transitions, 421 changer transitions 18/1249 dead transitions. [2025-01-09 16:39:23,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1249 transitions, 27426 flow [2025-01-09 16:39:23,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-01-09 16:39:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2025-01-09 16:39:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 463 transitions. [2025-01-09 16:39:23,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40331010452961674 [2025-01-09 16:39:23,198 INFO L175 Difference]: Start difference. First operand has 331 places, 517 transitions, 11149 flow. Second operand 41 states and 463 transitions. [2025-01-09 16:39:23,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1249 transitions, 27426 flow [2025-01-09 16:39:26,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 1249 transitions, 26356 flow, removed 319 selfloop flow, removed 21 redundant places. [2025-01-09 16:39:26,408 INFO L231 Difference]: Finished difference. Result has 353 places, 760 transitions, 17585 flow [2025-01-09 16:39:26,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=10668, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=17585, PETRI_PLACES=353, PETRI_TRANSITIONS=760} [2025-01-09 16:39:26,408 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 327 predicate places. [2025-01-09 16:39:26,408 INFO L471 AbstractCegarLoop]: Abstraction has has 353 places, 760 transitions, 17585 flow [2025-01-09 16:39:26,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.433333333333334) internal successors, (223), 30 states have internal predecessors, (223), 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) [2025-01-09 16:39:26,409 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:39:26,409 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:39:26,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-01-09 16:39:26,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:26,613 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:39:26,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:39:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash 209026414, now seen corresponding path program 9 times [2025-01-09 16:39:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:39:26,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141938078] [2025-01-09 16:39:26,614 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:39:26,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:39:26,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:39:26,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:39:26,626 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:39:26,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:39:26,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:39:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141938078] [2025-01-09 16:39:26,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141938078] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:39:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860458361] [2025-01-09 16:39:26,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:39:26,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:39:26,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:39:26,830 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:39:26,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-01-09 16:39:26,913 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 2 equivalence classes. [2025-01-09 16:39:26,942 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 16:39:26,942 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:39:26,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:39:26,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-01-09 16:39:26,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:39:27,039 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-01-09 16:39:27,039 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2025-01-09 16:39:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 16:39:27,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:39:27,174 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2025-01-09 16:39:27,174 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 106 treesize of output 74 [2025-01-09 16:39:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 16:39:27,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860458361] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:39:27,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:39:27,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 22 [2025-01-09 16:39:27,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271451812] [2025-01-09 16:39:27,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:39:27,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 16:39:27,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:39:27,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 16:39:27,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2025-01-09 16:39:27,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2025-01-09 16:39:27,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 760 transitions, 17585 flow. Second operand has 22 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 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) [2025-01-09 16:39:27,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:39:27,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2025-01-09 16:39:27,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand