./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/popl20-more-sorted.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 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:41:26,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:41:26,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:41:26,744 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:41:26,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:41:26,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:41:26,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:41:26,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:41:26,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:41:26,765 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:41:26,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:41:26,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:41:26,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:41:26,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:41:26,767 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:41:26,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:41:26,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:41:26,767 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:41:26,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:41:26,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:41:26,768 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:41:26,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:41:26,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:41:26,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:41:26,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:41:26,769 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:41:26,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:41:26,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:41:26,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:41:26,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:41:26,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:41:26,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:41:26,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:41:26,770 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 -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2025-02-06 04:41:27,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:41:27,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:41:27,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:41:27,036 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:41:27,036 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:41:27,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2025-02-06 04:41:28,198 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2978bcc9c/5239f5526208447898a5d3d20f571413/FLAG59c9b62df [2025-02-06 04:41:28,464 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:41:28,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2025-02-06 04:41:28,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2978bcc9c/5239f5526208447898a5d3d20f571413/FLAG59c9b62df [2025-02-06 04:41:28,784 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2978bcc9c/5239f5526208447898a5d3d20f571413 [2025-02-06 04:41:28,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:41:28,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:41:28,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:41:28,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:41:28,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:41:28,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:41:28" (1/1) ... [2025-02-06 04:41:28,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3641e6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:28, skipping insertion in model container [2025-02-06 04:41:28,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:41:28" (1/1) ... [2025-02-06 04:41:28,811 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:41:28,958 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/popl20-more-sorted.wvr.c[2473,2486] [2025-02-06 04:41:28,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:41:28,976 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:41:28,996 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/popl20-more-sorted.wvr.c[2473,2486] [2025-02-06 04:41:28,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:41:29,015 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:41:29,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29 WrapperNode [2025-02-06 04:41:29,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:41:29,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:41:29,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:41:29,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:41:29,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,053 INFO L138 Inliner]: procedures = 23, calls = 22, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 87 [2025-02-06 04:41:29,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:41:29,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:41:29,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:41:29,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:41:29,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,064 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,081 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-06 04:41:29,082 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,086 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,088 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:41:29,090 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:41:29,090 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:41:29,091 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:41:29,091 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (1/1) ... [2025-02-06 04:41:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:41:29,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:29,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:41:29,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:41:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:41:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:41:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:41:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:41:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:41:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:41:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:41:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:41:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:41:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:41:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:41:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:41:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:41:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:41:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:41:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:41:29,150 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:41:29,239 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:41:29,242 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:41:29,498 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:41:29,499 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:41:29,645 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:41:29,645 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:41:29,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:41:29 BoogieIcfgContainer [2025-02-06 04:41:29,646 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:41:29,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:41:29,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:41:29,651 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:41:29,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:41:28" (1/3) ... [2025-02-06 04:41:29,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3690b35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:41:29, skipping insertion in model container [2025-02-06 04:41:29,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:41:29" (2/3) ... [2025-02-06 04:41:29,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3690b35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:41:29, skipping insertion in model container [2025-02-06 04:41:29,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:41:29" (3/3) ... [2025-02-06 04:41:29,653 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2025-02-06 04:41:29,664 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:41:29,665 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-sorted.wvr.c that has 4 procedures, 24 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-06 04:41:29,666 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:41:29,726 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:41:29,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 27 transitions, 75 flow [2025-02-06 04:41:29,770 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-02-06 04:41:29,772 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:41:29,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 4/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-02-06 04:41:29,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 27 transitions, 75 flow [2025-02-06 04:41:29,776 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 23 transitions, 64 flow [2025-02-06 04:41:29,782 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:41:29,790 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;@12de3855, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:41:29,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:41:29,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:41:29,822 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2025-02-06 04:41:29,822 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:41:29,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:29,823 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:41:29,823 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:29,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1375377675, now seen corresponding path program 1 times [2025-02-06 04:41:29,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:29,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518132631] [2025-02-06 04:41:29,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:29,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:29,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:41:29,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:41:29,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:29,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:30,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:30,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:30,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518132631] [2025-02-06 04:41:30,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518132631] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:30,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:30,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:41:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238988540] [2025-02-06 04:41:30,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:30,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:41:30,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:30,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:41:30,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:41:30,150 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:30,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:30,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:30,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:30,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:30,275 INFO L124 PetriNetUnfolderBase]: 200/296 cut-off events. [2025-02-06 04:41:30,275 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2025-02-06 04:41:30,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 296 events. 200/296 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 685 event pairs, 124 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 534. Up to 295 conditions per place. [2025-02-06 04:41:30,282 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 21 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2025-02-06 04:41:30,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 112 flow [2025-02-06 04:41:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:41:30,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:41:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2025-02-06 04:41:30,291 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 04:41:30,293 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 64 flow. Second operand 3 states and 36 transitions. [2025-02-06 04:41:30,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 112 flow [2025-02-06 04:41:30,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:41:30,299 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 64 flow [2025-02-06 04:41:30,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2025-02-06 04:41:30,305 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2025-02-06 04:41:30,306 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 64 flow [2025-02-06 04:41:30,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:30,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:30,306 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] [2025-02-06 04:41:30,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:41:30,307 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:30,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1348069956, now seen corresponding path program 1 times [2025-02-06 04:41:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:30,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308798408] [2025-02-06 04:41:30,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:30,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 04:41:30,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 04:41:30,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:30,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:30,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308798408] [2025-02-06 04:41:30,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308798408] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:30,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:30,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:41:30,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617916857] [2025-02-06 04:41:30,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:30,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:41:30,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:30,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:41:30,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:41:30,615 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:30,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:30,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:30,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:30,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:30,754 INFO L124 PetriNetUnfolderBase]: 387/568 cut-off events. [2025-02-06 04:41:30,755 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-02-06 04:41:30,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 568 events. 387/568 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1767 event pairs, 124 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1156. Up to 352 conditions per place. [2025-02-06 04:41:30,759 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 35 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2025-02-06 04:41:30,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 183 flow [2025-02-06 04:41:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:41:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:41:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2025-02-06 04:41:30,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2025-02-06 04:41:30,761 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 64 flow. Second operand 3 states and 52 transitions. [2025-02-06 04:41:30,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 183 flow [2025-02-06 04:41:30,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 41 transitions, 179 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:41:30,762 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 86 flow [2025-02-06 04:41:30,762 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2025-02-06 04:41:30,762 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2025-02-06 04:41:30,763 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 86 flow [2025-02-06 04:41:30,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:30,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:30,763 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] [2025-02-06 04:41:30,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:41:30,763 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:30,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash 438726264, now seen corresponding path program 1 times [2025-02-06 04:41:30,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:30,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890734024] [2025-02-06 04:41:30,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:30,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:30,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:41:30,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:30,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:30,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890734024] [2025-02-06 04:41:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890734024] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603105973] [2025-02-06 04:41:30,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:30,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:30,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:31,000 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) [2025-02-06 04:41:31,002 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 [2025-02-06 04:41:31,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:41:31,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:31,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:31,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:31,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:41:31,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:31,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:31,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603105973] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:31,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:31,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 04:41:31,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687858158] [2025-02-06 04:41:31,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:31,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:41:31,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:31,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:41:31,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:41:31,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:31,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 86 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:31,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:31,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:31,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:31,513 INFO L124 PetriNetUnfolderBase]: 721/1078 cut-off events. [2025-02-06 04:41:31,513 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2025-02-06 04:41:31,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2598 conditions, 1078 events. 721/1078 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3942 event pairs, 417 based on Foata normal form. 42/1120 useless extension candidates. Maximal degree in co-relation 1376. Up to 567 conditions per place. [2025-02-06 04:41:31,520 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 53 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2025-02-06 04:41:31,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 60 transitions, 307 flow [2025-02-06 04:41:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:41:31,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:41:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2025-02-06 04:41:31,521 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2025-02-06 04:41:31,521 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 86 flow. Second operand 6 states and 77 transitions. [2025-02-06 04:41:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 60 transitions, 307 flow [2025-02-06 04:41:31,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 60 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:41:31,523 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 128 flow [2025-02-06 04:41:31,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2025-02-06 04:41:31,524 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2025-02-06 04:41:31,524 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 128 flow [2025-02-06 04:41:31,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:31,524 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:31,524 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] [2025-02-06 04:41:31,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:41:31,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:31,730 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:31,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 40395592, now seen corresponding path program 1 times [2025-02-06 04:41:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119290943] [2025-02-06 04:41:31,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:31,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:31,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:41:31,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:31,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:31,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:31,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:31,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119290943] [2025-02-06 04:41:31,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119290943] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:31,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796959491] [2025-02-06 04:41:31,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:31,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:31,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:31,843 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) [2025-02-06 04:41:31,844 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 [2025-02-06 04:41:31,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:41:31,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:31,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:31,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:31,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:41:31,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:31,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:32,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796959491] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:32,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:32,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-06 04:41:32,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148298383] [2025-02-06 04:41:32,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:32,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 04:41:32,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:32,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 04:41:32,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:41:32,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:32,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 128 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:32,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:32,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:32,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:32,225 INFO L124 PetriNetUnfolderBase]: 636/970 cut-off events. [2025-02-06 04:41:32,226 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2025-02-06 04:41:32,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 970 events. 636/970 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3624 event pairs, 391 based on Foata normal form. 42/1012 useless extension candidates. Maximal degree in co-relation 1440. Up to 567 conditions per place. [2025-02-06 04:41:32,231 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 51 selfloop transitions, 6 changer transitions 0/58 dead transitions. [2025-02-06 04:41:32,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 322 flow [2025-02-06 04:41:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:41:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:41:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2025-02-06 04:41:32,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2025-02-06 04:41:32,232 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 128 flow. Second operand 6 states and 77 transitions. [2025-02-06 04:41:32,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 322 flow [2025-02-06 04:41:32,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 312 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 04:41:32,235 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 147 flow [2025-02-06 04:41:32,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2025-02-06 04:41:32,236 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2025-02-06 04:41:32,236 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 147 flow [2025-02-06 04:41:32,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:32,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:32,236 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] [2025-02-06 04:41:32,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 04:41:32,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:32,437 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:32,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash -836740367, now seen corresponding path program 1 times [2025-02-06 04:41:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:32,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727986735] [2025-02-06 04:41:32,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:32,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:41:32,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:32,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:32,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:32,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727986735] [2025-02-06 04:41:32,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727986735] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108945168] [2025-02-06 04:41:32,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:32,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:32,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:32,540 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) [2025-02-06 04:41:32,541 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 [2025-02-06 04:41:32,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:41:32,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:41:32,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:32,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:32,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:41:32,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:32,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:32,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:32,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108945168] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:32,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:32,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-02-06 04:41:32,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027651477] [2025-02-06 04:41:32,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:32,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:41:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:32,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:41:32,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:41:32,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:32,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 147 flow. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:32,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:32,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:32,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:32,926 INFO L124 PetriNetUnfolderBase]: 511/785 cut-off events. [2025-02-06 04:41:32,926 INFO L125 PetriNetUnfolderBase]: For 689/689 co-relation queries the response was YES. [2025-02-06 04:41:32,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 785 events. 511/785 cut-off events. For 689/689 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2742 event pairs, 324 based on Foata normal form. 27/812 useless extension candidates. Maximal degree in co-relation 1590. Up to 567 conditions per place. [2025-02-06 04:41:32,929 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 3 changer transitions 24/52 dead transitions. [2025-02-06 04:41:32,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 311 flow [2025-02-06 04:41:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:41:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:41:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2025-02-06 04:41:32,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2025-02-06 04:41:32,930 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 147 flow. Second operand 6 states and 73 transitions. [2025-02-06 04:41:32,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 311 flow [2025-02-06 04:41:32,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 04:41:32,933 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 118 flow [2025-02-06 04:41:32,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2025-02-06 04:41:32,933 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2025-02-06 04:41:32,933 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 118 flow [2025-02-06 04:41:32,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:32,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:32,934 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] [2025-02-06 04:41:32,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 04:41:33,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:33,135 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:33,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash -264439399, now seen corresponding path program 2 times [2025-02-06 04:41:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:33,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487509481] [2025-02-06 04:41:33,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:33,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:33,142 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:33,152 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:33,152 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:33,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:33,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:33,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487509481] [2025-02-06 04:41:33,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487509481] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:33,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101471189] [2025-02-06 04:41:33,222 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:33,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:33,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:33,228 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) [2025-02-06 04:41:33,230 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 [2025-02-06 04:41:33,275 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:33,295 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:33,295 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:33,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:33,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:41:33,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:33,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101471189] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:33,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:41:33,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2025-02-06 04:41:33,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831327369] [2025-02-06 04:41:33,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:33,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:41:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:33,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:41:33,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:41:33,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:33,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 118 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:33,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:33,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:33,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:33,662 INFO L124 PetriNetUnfolderBase]: 517/765 cut-off events. [2025-02-06 04:41:33,662 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES. [2025-02-06 04:41:33,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2340 conditions, 765 events. 517/765 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2635 event pairs, 150 based on Foata normal form. 14/779 useless extension candidates. Maximal degree in co-relation 2317. Up to 379 conditions per place. [2025-02-06 04:41:33,668 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 55 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2025-02-06 04:41:33,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 406 flow [2025-02-06 04:41:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:41:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:41:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2025-02-06 04:41:33,671 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41203703703703703 [2025-02-06 04:41:33,671 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 118 flow. Second operand 8 states and 89 transitions. [2025-02-06 04:41:33,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 406 flow [2025-02-06 04:41:33,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 66 transitions, 332 flow, removed 34 selfloop flow, removed 9 redundant places. [2025-02-06 04:41:33,675 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 149 flow [2025-02-06 04:41:33,675 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=149, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2025-02-06 04:41:33,676 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2025-02-06 04:41:33,677 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 149 flow [2025-02-06 04:41:33,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:33,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:33,677 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] [2025-02-06 04:41:33,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:41:33,877 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,SelfDestructingSolverStorable5 [2025-02-06 04:41:33,877 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:33,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:33,878 INFO L85 PathProgramCache]: Analyzing trace with hash 383011149, now seen corresponding path program 3 times [2025-02-06 04:41:33,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:33,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427746931] [2025-02-06 04:41:33,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:33,889 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:33,900 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:33,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:41:33,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:33,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:33,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427746931] [2025-02-06 04:41:33,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427746931] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:33,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640718219] [2025-02-06 04:41:33,975 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:33,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:33,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:33,979 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) [2025-02-06 04:41:33,981 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 [2025-02-06 04:41:34,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:34,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:34,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:41:34,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:34,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:41:34,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:34,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:34,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640718219] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:34,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:41:34,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2025-02-06 04:41:34,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505173165] [2025-02-06 04:41:34,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:34,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:41:34,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:34,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:41:34,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:41:34,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:34,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 149 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:34,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:34,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:34,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:34,405 INFO L124 PetriNetUnfolderBase]: 678/1006 cut-off events. [2025-02-06 04:41:34,405 INFO L125 PetriNetUnfolderBase]: For 907/907 co-relation queries the response was YES. [2025-02-06 04:41:34,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 1006 events. 678/1006 cut-off events. For 907/907 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3615 event pairs, 240 based on Foata normal form. 12/1018 useless extension candidates. Maximal degree in co-relation 3023. Up to 593 conditions per place. [2025-02-06 04:41:34,409 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 57 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2025-02-06 04:41:34,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 447 flow [2025-02-06 04:41:34,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:41:34,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:41:34,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2025-02-06 04:41:34,411 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39351851851851855 [2025-02-06 04:41:34,411 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 149 flow. Second operand 8 states and 85 transitions. [2025-02-06 04:41:34,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 447 flow [2025-02-06 04:41:34,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 71 transitions, 410 flow, removed 10 selfloop flow, removed 4 redundant places. [2025-02-06 04:41:34,413 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 206 flow [2025-02-06 04:41:34,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2025-02-06 04:41:34,414 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2025-02-06 04:41:34,414 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 206 flow [2025-02-06 04:41:34,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:34,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:34,414 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] [2025-02-06 04:41:34,420 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 [2025-02-06 04:41:34,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:34,619 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:34,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:34,620 INFO L85 PathProgramCache]: Analyzing trace with hash 512570425, now seen corresponding path program 4 times [2025-02-06 04:41:34,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:34,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363231488] [2025-02-06 04:41:34,620 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:41:34,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:34,628 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:34,636 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:34,638 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:41:34,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:34,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:34,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363231488] [2025-02-06 04:41:34,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363231488] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:34,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141021097] [2025-02-06 04:41:34,711 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:41:34,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:34,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:34,713 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) [2025-02-06 04:41:34,716 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 [2025-02-06 04:41:34,757 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:34,774 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:34,774 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:41:34,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:34,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:41:34,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:34,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141021097] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:34,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:41:34,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2025-02-06 04:41:34,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176457910] [2025-02-06 04:41:34,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:34,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:41:34,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:34,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:41:34,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:41:34,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:34,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:34,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:34,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:34,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:35,088 INFO L124 PetriNetUnfolderBase]: 784/1168 cut-off events. [2025-02-06 04:41:35,088 INFO L125 PetriNetUnfolderBase]: For 1935/1935 co-relation queries the response was YES. [2025-02-06 04:41:35,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4080 conditions, 1168 events. 784/1168 cut-off events. For 1935/1935 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4384 event pairs, 319 based on Foata normal form. 14/1182 useless extension candidates. Maximal degree in co-relation 4048. Up to 820 conditions per place. [2025-02-06 04:41:35,095 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 56 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2025-02-06 04:41:35,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 75 transitions, 531 flow [2025-02-06 04:41:35,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:41:35,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:41:35,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2025-02-06 04:41:35,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2025-02-06 04:41:35,096 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 206 flow. Second operand 8 states and 87 transitions. [2025-02-06 04:41:35,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 75 transitions, 531 flow [2025-02-06 04:41:35,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 488 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-02-06 04:41:35,099 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 303 flow [2025-02-06 04:41:35,099 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=303, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2025-02-06 04:41:35,100 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2025-02-06 04:41:35,100 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 303 flow [2025-02-06 04:41:35,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:35,100 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:35,100 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] [2025-02-06 04:41:35,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 04:41:35,303 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,SelfDestructingSolverStorable7 [2025-02-06 04:41:35,303 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:35,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -824638035, now seen corresponding path program 5 times [2025-02-06 04:41:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:35,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925297065] [2025-02-06 04:41:35,304 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:41:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:35,310 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:35,315 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:35,315 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:35,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:35,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:35,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925297065] [2025-02-06 04:41:35,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925297065] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:35,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834403787] [2025-02-06 04:41:35,400 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:41:35,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:35,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:35,405 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) [2025-02-06 04:41:35,407 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 [2025-02-06 04:41:35,447 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:35,464 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:35,464 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:35,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:35,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:41:35,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:35,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:35,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834403787] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:35,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:35,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-02-06 04:41:35,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938768433] [2025-02-06 04:41:35,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:35,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:41:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:35,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:41:35,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:41:35,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:35,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 303 flow. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:35,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:35,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:35,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:36,052 INFO L124 PetriNetUnfolderBase]: 770/1154 cut-off events. [2025-02-06 04:41:36,052 INFO L125 PetriNetUnfolderBase]: For 3005/3005 co-relation queries the response was YES. [2025-02-06 04:41:36,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 1154 events. 770/1154 cut-off events. For 3005/3005 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4480 event pairs, 143 based on Foata normal form. 14/1168 useless extension candidates. Maximal degree in co-relation 4412. Up to 385 conditions per place. [2025-02-06 04:41:36,058 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 92 selfloop transitions, 72 changer transitions 0/165 dead transitions. [2025-02-06 04:41:36,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 165 transitions, 1348 flow [2025-02-06 04:41:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 04:41:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-06 04:41:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 187 transitions. [2025-02-06 04:41:36,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3645224171539961 [2025-02-06 04:41:36,060 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 303 flow. Second operand 19 states and 187 transitions. [2025-02-06 04:41:36,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 165 transitions, 1348 flow [2025-02-06 04:41:36,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 165 transitions, 1226 flow, removed 18 selfloop flow, removed 5 redundant places. [2025-02-06 04:41:36,066 INFO L231 Difference]: Finished difference. Result has 66 places, 100 transitions, 840 flow [2025-02-06 04:41:36,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=840, PETRI_PLACES=66, PETRI_TRANSITIONS=100} [2025-02-06 04:41:36,067 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2025-02-06 04:41:36,067 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 100 transitions, 840 flow [2025-02-06 04:41:36,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:36,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:36,067 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] [2025-02-06 04:41:36,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 04:41:36,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:36,268 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:36,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:36,269 INFO L85 PathProgramCache]: Analyzing trace with hash -583937171, now seen corresponding path program 6 times [2025-02-06 04:41:36,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:36,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453992658] [2025-02-06 04:41:36,269 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:41:36,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:36,275 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:36,281 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:36,281 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:41:36,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:36,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:36,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453992658] [2025-02-06 04:41:36,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453992658] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:36,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051941992] [2025-02-06 04:41:36,354 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:41:36,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:36,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:36,356 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) [2025-02-06 04:41:36,358 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 [2025-02-06 04:41:36,408 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:36,427 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:36,427 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:41:36,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:36,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:41:36,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:36,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:36,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:36,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051941992] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:36,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:41:36,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2025-02-06 04:41:36,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854379226] [2025-02-06 04:41:36,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:36,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:41:36,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:36,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:41:36,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:41:36,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:36,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 100 transitions, 840 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:36,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:36,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:36,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:36,769 INFO L124 PetriNetUnfolderBase]: 753/1119 cut-off events. [2025-02-06 04:41:36,770 INFO L125 PetriNetUnfolderBase]: For 3218/3218 co-relation queries the response was YES. [2025-02-06 04:41:36,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 1119 events. 753/1119 cut-off events. For 3218/3218 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4215 event pairs, 234 based on Foata normal form. 12/1131 useless extension candidates. Maximal degree in co-relation 4741. Up to 806 conditions per place. [2025-02-06 04:41:36,776 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 85 selfloop transitions, 47 changer transitions 0/133 dead transitions. [2025-02-06 04:41:36,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 133 transitions, 1250 flow [2025-02-06 04:41:36,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:41:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:41:36,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2025-02-06 04:41:36,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39094650205761317 [2025-02-06 04:41:36,778 INFO L175 Difference]: Start difference. First operand has 66 places, 100 transitions, 840 flow. Second operand 9 states and 95 transitions. [2025-02-06 04:41:36,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 133 transitions, 1250 flow [2025-02-06 04:41:36,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 1113 flow, removed 42 selfloop flow, removed 5 redundant places. [2025-02-06 04:41:36,799 INFO L231 Difference]: Finished difference. Result has 70 places, 104 transitions, 848 flow [2025-02-06 04:41:36,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=848, PETRI_PLACES=70, PETRI_TRANSITIONS=104} [2025-02-06 04:41:36,800 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2025-02-06 04:41:36,800 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 104 transitions, 848 flow [2025-02-06 04:41:36,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:36,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:36,800 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] [2025-02-06 04:41:36,811 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 [2025-02-06 04:41:37,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:37,001 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:37,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:37,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1757237107, now seen corresponding path program 7 times [2025-02-06 04:41:37,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:37,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279957832] [2025-02-06 04:41:37,001 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:41:37,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:37,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:41:37,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:37,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:37,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:37,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279957832] [2025-02-06 04:41:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279957832] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:37,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419546589] [2025-02-06 04:41:37,135 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:41:37,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:37,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:37,137 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) [2025-02-06 04:41:37,138 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 [2025-02-06 04:41:37,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:41:37,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:37,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:37,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:37,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 04:41:37,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:37,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:37,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419546589] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:37,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:41:37,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2025-02-06 04:41:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644251458] [2025-02-06 04:41:37,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:37,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:41:37,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:37,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:41:37,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2025-02-06 04:41:37,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:37,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 104 transitions, 848 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:37,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:37,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:37,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:37,553 INFO L124 PetriNetUnfolderBase]: 736/1084 cut-off events. [2025-02-06 04:41:37,553 INFO L125 PetriNetUnfolderBase]: For 3263/3263 co-relation queries the response was YES. [2025-02-06 04:41:37,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 1084 events. 736/1084 cut-off events. For 3263/3263 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4021 event pairs, 211 based on Foata normal form. 12/1096 useless extension candidates. Maximal degree in co-relation 4616. Up to 619 conditions per place. [2025-02-06 04:41:37,560 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 68 selfloop transitions, 51 changer transitions 0/120 dead transitions. [2025-02-06 04:41:37,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 1122 flow [2025-02-06 04:41:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:41:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:41:37,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2025-02-06 04:41:37,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2025-02-06 04:41:37,562 INFO L175 Difference]: Start difference. First operand has 70 places, 104 transitions, 848 flow. Second operand 8 states and 86 transitions. [2025-02-06 04:41:37,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 1122 flow [2025-02-06 04:41:37,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 120 transitions, 1016 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-02-06 04:41:37,571 INFO L231 Difference]: Finished difference. Result has 68 places, 100 transitions, 812 flow [2025-02-06 04:41:37,571 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=812, PETRI_PLACES=68, PETRI_TRANSITIONS=100} [2025-02-06 04:41:37,571 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2025-02-06 04:41:37,571 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 100 transitions, 812 flow [2025-02-06 04:41:37,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:37,572 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:37,572 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] [2025-02-06 04:41:37,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 04:41:37,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:37,773 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:37,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:37,773 INFO L85 PathProgramCache]: Analyzing trace with hash -152755277, now seen corresponding path program 2 times [2025-02-06 04:41:37,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:37,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730622643] [2025-02-06 04:41:37,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:37,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:37,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:37,783 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:37,783 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:37,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:37,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:37,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730622643] [2025-02-06 04:41:37,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730622643] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:41:37,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:41:37,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:41:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332511165] [2025-02-06 04:41:37,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:37,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:41:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:37,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:41:37,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:41:37,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:37,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 100 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2025-02-06 04:41:37,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:37,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:37,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:38,011 INFO L124 PetriNetUnfolderBase]: 980/1460 cut-off events. [2025-02-06 04:41:38,011 INFO L125 PetriNetUnfolderBase]: For 4390/4390 co-relation queries the response was YES. [2025-02-06 04:41:38,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6028 conditions, 1460 events. 980/1460 cut-off events. For 4390/4390 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6065 event pairs, 214 based on Foata normal form. 28/1488 useless extension candidates. Maximal degree in co-relation 5988. Up to 814 conditions per place. [2025-02-06 04:41:38,018 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 160 selfloop transitions, 20 changer transitions 3/184 dead transitions. [2025-02-06 04:41:38,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 184 transitions, 1802 flow [2025-02-06 04:41:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:41:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:41:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2025-02-06 04:41:38,019 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2025-02-06 04:41:38,019 INFO L175 Difference]: Start difference. First operand has 68 places, 100 transitions, 812 flow. Second operand 6 states and 82 transitions. [2025-02-06 04:41:38,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 184 transitions, 1802 flow [2025-02-06 04:41:38,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 184 transitions, 1639 flow, removed 5 selfloop flow, removed 7 redundant places. [2025-02-06 04:41:38,028 INFO L231 Difference]: Finished difference. Result has 69 places, 112 transitions, 893 flow [2025-02-06 04:41:38,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=893, PETRI_PLACES=69, PETRI_TRANSITIONS=112} [2025-02-06 04:41:38,029 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2025-02-06 04:41:38,029 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 112 transitions, 893 flow [2025-02-06 04:41:38,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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) [2025-02-06 04:41:38,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:38,029 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] [2025-02-06 04:41:38,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:41:38,029 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:38,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1081657204, now seen corresponding path program 2 times [2025-02-06 04:41:38,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:38,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129912106] [2025-02-06 04:41:38,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:38,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:38,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:38,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:38,045 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:38,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:38,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:38,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129912106] [2025-02-06 04:41:38,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129912106] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:38,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668510470] [2025-02-06 04:41:38,111 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:38,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:38,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:38,113 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) [2025-02-06 04:41:38,114 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 [2025-02-06 04:41:38,156 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 04:41:38,175 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:41:38,176 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:38,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:38,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:41:38,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:38,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:41:38,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668510470] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:38,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:41:38,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2025-02-06 04:41:38,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695379407] [2025-02-06 04:41:38,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:41:38,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:41:38,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:38,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:41:38,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:41:38,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:38,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 112 transitions, 893 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) [2025-02-06 04:41:38,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:38,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:38,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:38,356 INFO L124 PetriNetUnfolderBase]: 721/1054 cut-off events. [2025-02-06 04:41:38,357 INFO L125 PetriNetUnfolderBase]: For 3550/3550 co-relation queries the response was YES. [2025-02-06 04:41:38,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 1054 events. 721/1054 cut-off events. For 3550/3550 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3844 event pairs, 207 based on Foata normal form. 70/1124 useless extension candidates. Maximal degree in co-relation 4539. Up to 816 conditions per place. [2025-02-06 04:41:38,362 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 114 selfloop transitions, 11 changer transitions 0/126 dead transitions. [2025-02-06 04:41:38,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 126 transitions, 1201 flow [2025-02-06 04:41:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:41:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:41:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2025-02-06 04:41:38,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3765432098765432 [2025-02-06 04:41:38,364 INFO L175 Difference]: Start difference. First operand has 69 places, 112 transitions, 893 flow. Second operand 6 states and 61 transitions. [2025-02-06 04:41:38,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 126 transitions, 1201 flow [2025-02-06 04:41:38,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 126 transitions, 1161 flow, removed 15 selfloop flow, removed 4 redundant places. [2025-02-06 04:41:38,369 INFO L231 Difference]: Finished difference. Result has 68 places, 101 transitions, 754 flow [2025-02-06 04:41:38,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=754, PETRI_PLACES=68, PETRI_TRANSITIONS=101} [2025-02-06 04:41:38,370 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2025-02-06 04:41:38,370 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 101 transitions, 754 flow [2025-02-06 04:41:38,370 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) [2025-02-06 04:41:38,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:38,370 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] [2025-02-06 04:41:38,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 04:41:38,574 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,SelfDestructingSolverStorable12 [2025-02-06 04:41:38,574 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:38,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1238676715, now seen corresponding path program 1 times [2025-02-06 04:41:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391878626] [2025-02-06 04:41:38,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:38,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:38,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:41:38,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:38,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:38,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:39,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:39,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:39,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391878626] [2025-02-06 04:41:39,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391878626] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:39,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807288057] [2025-02-06 04:41:39,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:39,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:39,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:39,701 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) [2025-02-06 04:41:39,701 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 [2025-02-06 04:41:39,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:41:39,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:39,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:39,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:39,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-06 04:41:39,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:39,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:41:40,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:40,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2025-02-06 04:41:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:40,329 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:41,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2025-02-06 04:41:41,590 INFO L349 Elim1Store]: treesize reduction 23, result has 34.3 percent of original size [2025-02-06 04:41:41,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 118 treesize of output 91 [2025-02-06 04:41:41,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2025-02-06 04:41:41,629 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2025-02-06 04:41:41,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 122 treesize of output 1 [2025-02-06 04:41:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:41,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807288057] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:41,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:41,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2025-02-06 04:41:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435325361] [2025-02-06 04:41:41,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:41,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 04:41:41,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:41,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 04:41:41,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2025-02-06 04:41:41,682 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:41,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 101 transitions, 754 flow. Second operand has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:41,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:41,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:41,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:43,124 INFO L124 PetriNetUnfolderBase]: 1831/2662 cut-off events. [2025-02-06 04:41:43,124 INFO L125 PetriNetUnfolderBase]: For 6967/6967 co-relation queries the response was YES. [2025-02-06 04:41:43,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11424 conditions, 2662 events. 1831/2662 cut-off events. For 6967/6967 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11614 event pairs, 197 based on Foata normal form. 1/2663 useless extension candidates. Maximal degree in co-relation 7529. Up to 1051 conditions per place. [2025-02-06 04:41:43,141 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 261 selfloop transitions, 120 changer transitions 1/383 dead transitions. [2025-02-06 04:41:43,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 383 transitions, 3662 flow [2025-02-06 04:41:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 04:41:43,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 04:41:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 185 transitions. [2025-02-06 04:41:43,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4894179894179894 [2025-02-06 04:41:43,143 INFO L175 Difference]: Start difference. First operand has 68 places, 101 transitions, 754 flow. Second operand 14 states and 185 transitions. [2025-02-06 04:41:43,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 383 transitions, 3662 flow [2025-02-06 04:41:43,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 383 transitions, 3612 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 04:41:43,158 INFO L231 Difference]: Finished difference. Result has 82 places, 197 transitions, 1966 flow [2025-02-06 04:41:43,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1966, PETRI_PLACES=82, PETRI_TRANSITIONS=197} [2025-02-06 04:41:43,158 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2025-02-06 04:41:43,158 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 197 transitions, 1966 flow [2025-02-06 04:41:43,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.538461538461538) internal successors, (170), 26 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:43,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:43,159 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] [2025-02-06 04:41:43,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 04:41:43,359 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,SelfDestructingSolverStorable13 [2025-02-06 04:41:43,359 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:43,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash 382942184, now seen corresponding path program 1 times [2025-02-06 04:41:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576230202] [2025-02-06 04:41:43,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:43,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:41:43,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:43,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:43,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576230202] [2025-02-06 04:41:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576230202] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248313885] [2025-02-06 04:41:44,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:41:44,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:44,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:44,225 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) [2025-02-06 04:41:44,226 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 [2025-02-06 04:41:44,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 04:41:44,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:44,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:41:44,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:44,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 04:41:44,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:44,485 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:44,486 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 72 treesize of output 32 [2025-02-06 04:41:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:44,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:44,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:44,826 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 147 treesize of output 132 [2025-02-06 04:41:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:45,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248313885] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:45,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:45,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2025-02-06 04:41:45,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335361870] [2025-02-06 04:41:45,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:45,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 04:41:45,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:45,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 04:41:45,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:41:45,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:45,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 197 transitions, 1966 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) [2025-02-06 04:41:45,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:45,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:45,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:45,698 INFO L124 PetriNetUnfolderBase]: 2303/3319 cut-off events. [2025-02-06 04:41:45,698 INFO L125 PetriNetUnfolderBase]: For 12404/12404 co-relation queries the response was YES. [2025-02-06 04:41:45,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16427 conditions, 3319 events. 2303/3319 cut-off events. For 12404/12404 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14800 event pairs, 308 based on Foata normal form. 2/3321 useless extension candidates. Maximal degree in co-relation 15127. Up to 2610 conditions per place. [2025-02-06 04:41:45,713 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 200 selfloop transitions, 140 changer transitions 1/342 dead transitions. [2025-02-06 04:41:45,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 342 transitions, 3955 flow [2025-02-06 04:41:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:45,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2025-02-06 04:41:45,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2025-02-06 04:41:45,715 INFO L175 Difference]: Start difference. First operand has 82 places, 197 transitions, 1966 flow. Second operand 10 states and 119 transitions. [2025-02-06 04:41:45,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 342 transitions, 3955 flow [2025-02-06 04:41:45,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 342 transitions, 3730 flow, removed 74 selfloop flow, removed 4 redundant places. [2025-02-06 04:41:45,741 INFO L231 Difference]: Finished difference. Result has 91 places, 280 transitions, 3096 flow [2025-02-06 04:41:45,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3096, PETRI_PLACES=91, PETRI_TRANSITIONS=280} [2025-02-06 04:41:45,741 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2025-02-06 04:41:45,742 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 280 transitions, 3096 flow [2025-02-06 04:41:45,742 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) [2025-02-06 04:41:45,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:45,742 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] [2025-02-06 04:41:45,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 04:41:45,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:45,946 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:45,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:45,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1226468367, now seen corresponding path program 2 times [2025-02-06 04:41:45,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:45,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071877655] [2025-02-06 04:41:45,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:45,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:45,952 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:41:45,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:45,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:45,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:46,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071877655] [2025-02-06 04:41:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071877655] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058267761] [2025-02-06 04:41:46,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:46,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:46,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:46,558 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) [2025-02-06 04:41:46,562 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 [2025-02-06 04:41:46,607 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:41:46,625 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:46,625 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:46,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:46,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-06 04:41:46,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:46,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:41:46,957 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:46,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2025-02-06 04:41:47,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:47,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:47,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058267761] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:47,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:47,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 31 [2025-02-06 04:41:47,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058341471] [2025-02-06 04:41:47,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:47,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 04:41:47,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:47,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 04:41:47,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2025-02-06 04:41:47,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:47,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 280 transitions, 3096 flow. Second operand has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:47,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:47,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:47,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:49,080 INFO L124 PetriNetUnfolderBase]: 2677/3931 cut-off events. [2025-02-06 04:41:49,080 INFO L125 PetriNetUnfolderBase]: For 18187/18187 co-relation queries the response was YES. [2025-02-06 04:41:49,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21046 conditions, 3931 events. 2677/3931 cut-off events. For 18187/18187 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 18789 event pairs, 274 based on Foata normal form. 2/3933 useless extension candidates. Maximal degree in co-relation 19639. Up to 3129 conditions per place. [2025-02-06 04:41:49,104 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 262 selfloop transitions, 156 changer transitions 4/423 dead transitions. [2025-02-06 04:41:49,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 423 transitions, 5120 flow [2025-02-06 04:41:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 04:41:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-06 04:41:49,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 196 transitions. [2025-02-06 04:41:49,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3820662768031189 [2025-02-06 04:41:49,106 INFO L175 Difference]: Start difference. First operand has 91 places, 280 transitions, 3096 flow. Second operand 19 states and 196 transitions. [2025-02-06 04:41:49,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 423 transitions, 5120 flow [2025-02-06 04:41:49,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 423 transitions, 5061 flow, removed 26 selfloop flow, removed 3 redundant places. [2025-02-06 04:41:49,157 INFO L231 Difference]: Finished difference. Result has 113 places, 348 transitions, 4256 flow [2025-02-06 04:41:49,157 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4256, PETRI_PLACES=113, PETRI_TRANSITIONS=348} [2025-02-06 04:41:49,158 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2025-02-06 04:41:49,158 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 348 transitions, 4256 flow [2025-02-06 04:41:49,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:49,158 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:49,158 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] [2025-02-06 04:41:49,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 04:41:49,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:49,359 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:49,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash 320005051, now seen corresponding path program 3 times [2025-02-06 04:41:49,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:49,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556964495] [2025-02-06 04:41:49,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:49,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:49,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:41:49,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:49,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:41:49,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:50,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:50,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556964495] [2025-02-06 04:41:50,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556964495] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:50,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12146482] [2025-02-06 04:41:50,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:41:50,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:50,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:50,352 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) [2025-02-06 04:41:50,353 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 [2025-02-06 04:41:50,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:41:50,427 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:50,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:41:50,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:50,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-06 04:41:50,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:50,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:41:50,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 04:41:50,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:50,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 56 [2025-02-06 04:41:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:50,951 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:51,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12146482] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:51,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:51,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 31 [2025-02-06 04:41:51,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342406315] [2025-02-06 04:41:51,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:51,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 04:41:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:51,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 04:41:51,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=760, Unknown=0, NotChecked=0, Total=930 [2025-02-06 04:41:51,749 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:51,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 348 transitions, 4256 flow. Second operand has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:51,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:51,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:51,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:56,294 INFO L124 PetriNetUnfolderBase]: 5523/8229 cut-off events. [2025-02-06 04:41:56,294 INFO L125 PetriNetUnfolderBase]: For 46541/46541 co-relation queries the response was YES. [2025-02-06 04:41:56,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46171 conditions, 8229 events. 5523/8229 cut-off events. For 46541/46541 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 46018 event pairs, 256 based on Foata normal form. 4/8233 useless extension candidates. Maximal degree in co-relation 45790. Up to 3855 conditions per place. [2025-02-06 04:41:56,332 INFO L140 encePairwiseOnDemand]: 13/27 looper letters, 309 selfloop transitions, 611 changer transitions 9/930 dead transitions. [2025-02-06 04:41:56,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 930 transitions, 11652 flow [2025-02-06 04:41:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-02-06 04:41:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2025-02-06 04:41:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 535 transitions. [2025-02-06 04:41:56,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2025-02-06 04:41:56,334 INFO L175 Difference]: Start difference. First operand has 113 places, 348 transitions, 4256 flow. Second operand 50 states and 535 transitions. [2025-02-06 04:41:56,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 930 transitions, 11652 flow [2025-02-06 04:41:56,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 930 transitions, 11295 flow, removed 89 selfloop flow, removed 5 redundant places. [2025-02-06 04:41:56,502 INFO L231 Difference]: Finished difference. Result has 180 places, 729 transitions, 10396 flow [2025-02-06 04:41:56,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=10396, PETRI_PLACES=180, PETRI_TRANSITIONS=729} [2025-02-06 04:41:56,503 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2025-02-06 04:41:56,503 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 729 transitions, 10396 flow [2025-02-06 04:41:56,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:56,503 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:41:56,503 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] [2025-02-06 04:41:56,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 04:41:56,706 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,SelfDestructingSolverStorable16 [2025-02-06 04:41:56,707 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:41:56,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:41:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2057675024, now seen corresponding path program 2 times [2025-02-06 04:41:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:41:56,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194963956] [2025-02-06 04:41:56,708 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:56,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:41:56,715 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:41:56,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:56,729 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:56,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:41:57,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:41:57,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194963956] [2025-02-06 04:41:57,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194963956] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:41:57,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229517586] [2025-02-06 04:41:57,269 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:41:57,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:41:57,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:41:57,271 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) [2025-02-06 04:41:57,273 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 [2025-02-06 04:41:57,322 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:41:57,346 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:41:57,346 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:41:57,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:41:57,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 04:41:57,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:41:57,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:57,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 31 [2025-02-06 04:41:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:57,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:41:57,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:41:57,900 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 133 treesize of output 130 [2025-02-06 04:41:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:41:58,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229517586] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:41:58,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:41:58,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2025-02-06 04:41:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318191459] [2025-02-06 04:41:58,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:41:58,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 04:41:58,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:41:58,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 04:41:58,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-02-06 04:41:58,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:41:58,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 729 transitions, 10396 flow. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:41:58,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:41:58,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:41:58,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:41:59,894 INFO L124 PetriNetUnfolderBase]: 6085/9047 cut-off events. [2025-02-06 04:41:59,894 INFO L125 PetriNetUnfolderBase]: For 72281/72281 co-relation queries the response was YES. [2025-02-06 04:41:59,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59979 conditions, 9047 events. 6085/9047 cut-off events. For 72281/72281 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 51129 event pairs, 647 based on Foata normal form. 8/9055 useless extension candidates. Maximal degree in co-relation 59542. Up to 6909 conditions per place. [2025-02-06 04:41:59,952 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 435 selfloop transitions, 461 changer transitions 1/898 dead transitions. [2025-02-06 04:41:59,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 898 transitions, 14295 flow [2025-02-06 04:41:59,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:41:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:41:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2025-02-06 04:41:59,954 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2025-02-06 04:41:59,954 INFO L175 Difference]: Start difference. First operand has 180 places, 729 transitions, 10396 flow. Second operand 10 states and 128 transitions. [2025-02-06 04:41:59,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 898 transitions, 14295 flow [2025-02-06 04:42:00,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 898 transitions, 12654 flow, removed 750 selfloop flow, removed 4 redundant places. [2025-02-06 04:42:00,798 INFO L231 Difference]: Finished difference. Result has 188 places, 820 transitions, 11496 flow [2025-02-06 04:42:00,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=376, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11496, PETRI_PLACES=188, PETRI_TRANSITIONS=820} [2025-02-06 04:42:00,799 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2025-02-06 04:42:00,799 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 820 transitions, 11496 flow [2025-02-06 04:42:00,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:00,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:00,799 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] [2025-02-06 04:42:00,805 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 [2025-02-06 04:42:01,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 04:42:01,001 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:01,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash 782833394, now seen corresponding path program 3 times [2025-02-06 04:42:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:01,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456044656] [2025-02-06 04:42:01,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:01,007 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:01,029 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:01,029 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:01,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:01,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:01,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:01,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456044656] [2025-02-06 04:42:01,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456044656] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:01,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104022793] [2025-02-06 04:42:01,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:42:01,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:01,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:01,734 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) [2025-02-06 04:42:01,736 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 [2025-02-06 04:42:01,789 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:01,816 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:01,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:42:01,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:01,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 04:42:01,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:01,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:01,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 31 [2025-02-06 04:42:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:02,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:02,352 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:02,352 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 147 treesize of output 132 [2025-02-06 04:42:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:02,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104022793] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:02,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:02,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2025-02-06 04:42:02,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443174104] [2025-02-06 04:42:02,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:02,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 04:42:02,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:02,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 04:42:02,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2025-02-06 04:42:02,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:42:02,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 820 transitions, 11496 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:02,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:02,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:42:02,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:04,277 INFO L124 PetriNetUnfolderBase]: 6267/9309 cut-off events. [2025-02-06 04:42:04,277 INFO L125 PetriNetUnfolderBase]: For 63170/63170 co-relation queries the response was YES. [2025-02-06 04:42:04,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58375 conditions, 9309 events. 6267/9309 cut-off events. For 63170/63170 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 53132 event pairs, 834 based on Foata normal form. 4/9313 useless extension candidates. Maximal degree in co-relation 57947. Up to 8247 conditions per place. [2025-02-06 04:42:04,344 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 634 selfloop transitions, 259 changer transitions 1/895 dead transitions. [2025-02-06 04:42:04,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 895 transitions, 14084 flow [2025-02-06 04:42:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:42:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:42:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2025-02-06 04:42:04,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2025-02-06 04:42:04,345 INFO L175 Difference]: Start difference. First operand has 188 places, 820 transitions, 11496 flow. Second operand 10 states and 122 transitions. [2025-02-06 04:42:04,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 895 transitions, 14084 flow [2025-02-06 04:42:04,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 895 transitions, 13675 flow, removed 110 selfloop flow, removed 5 redundant places. [2025-02-06 04:42:04,855 INFO L231 Difference]: Finished difference. Result has 194 places, 838 transitions, 12070 flow [2025-02-06 04:42:04,855 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11087, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12070, PETRI_PLACES=194, PETRI_TRANSITIONS=838} [2025-02-06 04:42:04,856 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2025-02-06 04:42:04,856 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 838 transitions, 12070 flow [2025-02-06 04:42:04,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:04,856 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:04,856 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] [2025-02-06 04:42:04,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 04:42:05,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:05,057 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:05,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:05,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1165254193, now seen corresponding path program 4 times [2025-02-06 04:42:05,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:05,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134220304] [2025-02-06 04:42:05,057 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:05,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:05,062 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:05,074 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:05,077 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:05,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:05,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:05,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:05,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134220304] [2025-02-06 04:42:05,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134220304] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:05,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076514981] [2025-02-06 04:42:05,846 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:05,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:05,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:05,849 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) [2025-02-06 04:42:05,850 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 [2025-02-06 04:42:05,901 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:05,918 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:05,918 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:05,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:05,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-06 04:42:05,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:05,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 04:42:06,241 INFO L349 Elim1Store]: treesize reduction 52, result has 50.5 percent of original size [2025-02-06 04:42:06,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 100 [2025-02-06 04:42:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:06,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:07,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076514981] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:07,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:07,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10] total 28 [2025-02-06 04:42:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748091194] [2025-02-06 04:42:07,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:07,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 04:42:07,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:07,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 04:42:07,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2025-02-06 04:42:07,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:42:07,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 838 transitions, 12070 flow. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 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) [2025-02-06 04:42:07,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:07,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:42:07,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:11,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 04:42:15,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 04:42:22,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 04:42:25,713 INFO L124 PetriNetUnfolderBase]: 6723/9979 cut-off events. [2025-02-06 04:42:25,713 INFO L125 PetriNetUnfolderBase]: For 67910/67910 co-relation queries the response was YES. [2025-02-06 04:42:25,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63906 conditions, 9979 events. 6723/9979 cut-off events. For 67910/67910 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 57451 event pairs, 705 based on Foata normal form. 6/9985 useless extension candidates. Maximal degree in co-relation 63679. Up to 7286 conditions per place. [2025-02-06 04:42:25,774 INFO L140 encePairwiseOnDemand]: 14/27 looper letters, 457 selfloop transitions, 655 changer transitions 8/1121 dead transitions. [2025-02-06 04:42:25,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1121 transitions, 17410 flow [2025-02-06 04:42:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-06 04:42:25,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-02-06 04:42:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 307 transitions. [2025-02-06 04:42:25,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39208173690932313 [2025-02-06 04:42:25,776 INFO L175 Difference]: Start difference. First operand has 194 places, 838 transitions, 12070 flow. Second operand 29 states and 307 transitions. [2025-02-06 04:42:25,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1121 transitions, 17410 flow [2025-02-06 04:42:26,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 1121 transitions, 16705 flow, removed 134 selfloop flow, removed 7 redundant places. [2025-02-06 04:42:26,305 INFO L231 Difference]: Finished difference. Result has 228 places, 1011 transitions, 15486 flow [2025-02-06 04:42:26,306 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11421, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=505, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15486, PETRI_PLACES=228, PETRI_TRANSITIONS=1011} [2025-02-06 04:42:26,306 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 199 predicate places. [2025-02-06 04:42:26,306 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 1011 transitions, 15486 flow [2025-02-06 04:42:26,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 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) [2025-02-06 04:42:26,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:26,307 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] [2025-02-06 04:42:26,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 04:42:26,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:26,511 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:26,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:26,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1893337551, now seen corresponding path program 5 times [2025-02-06 04:42:26,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:26,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400878363] [2025-02-06 04:42:26,512 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:26,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:26,517 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:26,531 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:26,532 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:26,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:27,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:27,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400878363] [2025-02-06 04:42:27,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400878363] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:27,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686816241] [2025-02-06 04:42:27,339 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:42:27,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:27,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:27,341 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) [2025-02-06 04:42:27,342 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 [2025-02-06 04:42:27,399 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:27,425 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:27,425 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:42:27,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:27,426 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-06 04:42:27,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:27,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:42:27,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 04:42:27,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:27,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2025-02-06 04:42:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:27,846 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:33,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2025-02-06 04:42:33,324 INFO L349 Elim1Store]: treesize reduction 23, result has 34.3 percent of original size [2025-02-06 04:42:33,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1057 treesize of output 860 [2025-02-06 04:42:33,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 88 [2025-02-06 04:42:33,405 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2025-02-06 04:42:33,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1273 treesize of output 1 [2025-02-06 04:42:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686816241] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:33,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2025-02-06 04:42:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344757915] [2025-02-06 04:42:33,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:33,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 04:42:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:33,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 04:42:33,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=641, Unknown=1, NotChecked=0, Total=756 [2025-02-06 04:42:33,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:42:33,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 1011 transitions, 15486 flow. Second operand has 28 states, 28 states have (on average 6.357142857142857) internal successors, (178), 28 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:33,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:33,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:42:33,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:40,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 04:42:41,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 04:42:47,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 04:42:49,584 INFO L124 PetriNetUnfolderBase]: 7635/11272 cut-off events. [2025-02-06 04:42:49,585 INFO L125 PetriNetUnfolderBase]: For 87467/87467 co-relation queries the response was YES. [2025-02-06 04:42:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75510 conditions, 11272 events. 7635/11272 cut-off events. For 87467/87467 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 65350 event pairs, 812 based on Foata normal form. 5/11277 useless extension candidates. Maximal degree in co-relation 75248. Up to 4609 conditions per place. [2025-02-06 04:42:49,681 INFO L140 encePairwiseOnDemand]: 14/27 looper letters, 1118 selfloop transitions, 502 changer transitions 7/1628 dead transitions. [2025-02-06 04:42:49,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1628 transitions, 25845 flow [2025-02-06 04:42:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 04:42:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-06 04:42:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 373 transitions. [2025-02-06 04:42:49,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4604938271604938 [2025-02-06 04:42:49,683 INFO L175 Difference]: Start difference. First operand has 228 places, 1011 transitions, 15486 flow. Second operand 30 states and 373 transitions. [2025-02-06 04:42:49,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1628 transitions, 25845 flow [2025-02-06 04:42:50,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 1628 transitions, 24828 flow, removed 451 selfloop flow, removed 6 redundant places. [2025-02-06 04:42:50,641 INFO L231 Difference]: Finished difference. Result has 270 places, 1155 transitions, 18038 flow [2025-02-06 04:42:50,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=14737, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18038, PETRI_PLACES=270, PETRI_TRANSITIONS=1155} [2025-02-06 04:42:50,643 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2025-02-06 04:42:50,643 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 1155 transitions, 18038 flow [2025-02-06 04:42:50,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.357142857142857) internal successors, (178), 28 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:50,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:50,643 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] [2025-02-06 04:42:50,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 04:42:50,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:50,844 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:50,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:50,845 INFO L85 PathProgramCache]: Analyzing trace with hash 710758484, now seen corresponding path program 4 times [2025-02-06 04:42:50,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:50,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676164234] [2025-02-06 04:42:50,845 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:50,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:50,851 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:50,859 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:50,859 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:50,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:51,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:42:51,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:51,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676164234] [2025-02-06 04:42:51,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676164234] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:51,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272988690] [2025-02-06 04:42:51,496 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:42:51,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:51,499 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) [2025-02-06 04:42:51,500 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 [2025-02-06 04:42:51,555 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:51,579 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:51,579 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:42:51,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:51,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 04:42:51,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:51,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:51,699 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 72 treesize of output 32 [2025-02-06 04:42:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:51,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:52,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:52,001 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 137 treesize of output 122 [2025-02-06 04:42:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:52,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272988690] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:52,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:52,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2025-02-06 04:42:52,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729890745] [2025-02-06 04:42:52,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:52,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 04:42:52,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:52,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 04:42:52,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:42:52,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:42:52,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1155 transitions, 18038 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) [2025-02-06 04:42:52,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:52,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:42:52,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:42:55,494 INFO L124 PetriNetUnfolderBase]: 7917/11679 cut-off events. [2025-02-06 04:42:55,495 INFO L125 PetriNetUnfolderBase]: For 101895/101895 co-relation queries the response was YES. [2025-02-06 04:42:55,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81728 conditions, 11679 events. 7917/11679 cut-off events. For 101895/101895 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 67960 event pairs, 948 based on Foata normal form. 6/11685 useless extension candidates. Maximal degree in co-relation 81438. Up to 10605 conditions per place. [2025-02-06 04:42:55,602 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 974 selfloop transitions, 248 changer transitions 1/1224 dead transitions. [2025-02-06 04:42:55,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1224 transitions, 21142 flow [2025-02-06 04:42:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:42:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:42:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2025-02-06 04:42:55,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 04:42:55,603 INFO L175 Difference]: Start difference. First operand has 270 places, 1155 transitions, 18038 flow. Second operand 10 states and 120 transitions. [2025-02-06 04:42:55,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1224 transitions, 21142 flow [2025-02-06 04:42:56,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 1224 transitions, 20715 flow, removed 123 selfloop flow, removed 7 redundant places. [2025-02-06 04:42:56,727 INFO L231 Difference]: Finished difference. Result has 274 places, 1180 transitions, 18553 flow [2025-02-06 04:42:56,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=17611, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18553, PETRI_PLACES=274, PETRI_TRANSITIONS=1180} [2025-02-06 04:42:56,728 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2025-02-06 04:42:56,728 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 1180 transitions, 18553 flow [2025-02-06 04:42:56,729 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) [2025-02-06 04:42:56,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:42:56,729 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] [2025-02-06 04:42:56,735 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 [2025-02-06 04:42:56,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:56,929 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:42:56,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:42:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash 113175021, now seen corresponding path program 6 times [2025-02-06 04:42:56,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:42:56,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822197414] [2025-02-06 04:42:56,930 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:42:56,939 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:56,969 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:56,969 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:42:56,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:42:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822197414] [2025-02-06 04:42:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822197414] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:42:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916651726] [2025-02-06 04:42:57,486 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:42:57,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:42:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:42:57,489 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) [2025-02-06 04:42:57,490 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 [2025-02-06 04:42:57,548 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 2 equivalence classes. [2025-02-06 04:42:57,573 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 04:42:57,573 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:42:57,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:42:57,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 04:42:57,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:42:57,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:57,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2025-02-06 04:42:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 04:42:57,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:42:58,227 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:42:58,227 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 147 treesize of output 132 [2025-02-06 04:42:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 04:42:59,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916651726] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:42:59,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:42:59,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2025-02-06 04:42:59,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108782451] [2025-02-06 04:42:59,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:42:59,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:42:59,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:42:59,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:42:59,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:42:59,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-02-06 04:42:59,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 1180 transitions, 18553 flow. Second operand has 23 states, 23 states have (on average 6.391304347826087) internal successors, (147), 23 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:42:59,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:42:59,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-02-06 04:42:59,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand