./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-chromosome-subst.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/chl-chromosome-subst.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 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:33:02,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:33:02,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:33:02,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:33:02,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:33:02,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:33:02,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:33:02,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:33:02,601 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:33:02,601 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:33:02,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:33:02,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:33:02,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:33:02,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:33:02,603 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:33:02,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:33:02,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:33:02,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:33:02,604 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 -> 60539e5483ee028af31550fcc6bdc40a30b35263f2407e34b5392a698998aa9c [2025-02-06 04:33:02,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:33:02,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:33:02,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:33:02,780 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:33:02,780 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:33:02,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2025-02-06 04:33:04,024 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98f7c7a74/426c93b2b9344a40b00a8c1b9b8572ca/FLAG1bddbdf4f [2025-02-06 04:33:04,284 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:33:04,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2025-02-06 04:33:04,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98f7c7a74/426c93b2b9344a40b00a8c1b9b8572ca/FLAG1bddbdf4f [2025-02-06 04:33:04,574 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/98f7c7a74/426c93b2b9344a40b00a8c1b9b8572ca [2025-02-06 04:33:04,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:33:04,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:33:04,577 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:33:04,577 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:33:04,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:33:04,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5050d6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04, skipping insertion in model container [2025-02-06 04:33:04,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:33:04,731 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3136,3149] [2025-02-06 04:33:04,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:33:04,747 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:33:04,764 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3136,3149] [2025-02-06 04:33:04,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:33:04,784 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:33:04,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04 WrapperNode [2025-02-06 04:33:04,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:33:04,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:33:04,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:33:04,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:33:04,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,797 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,818 INFO L138 Inliner]: procedures = 25, calls = 32, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 253 [2025-02-06 04:33:04,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:33:04,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:33:04,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:33:04,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:33:04,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,829 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,849 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-06 04:33:04,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,860 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:33:04,871 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:33:04,871 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:33:04,872 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:33:04,872 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (1/1) ... [2025-02-06 04:33:04,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:33:04,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:04,897 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 04:33:04,901 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 04:33:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:33:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:33:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:33:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:33:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:33:04,917 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:33:04,917 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:33:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:33:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:33:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:33:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:33:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:33:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:33:04,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:33:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:33:04,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:33:04,919 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 04:33:04,989 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:33:04,990 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:33:05,310 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:33:05,310 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:33:05,506 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:33:05,506 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:33:05,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:33:05 BoogieIcfgContainer [2025-02-06 04:33:05,506 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:33:05,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:33:05,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:33:05,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:33:05,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:33:04" (1/3) ... [2025-02-06 04:33:05,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66745642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:33:05, skipping insertion in model container [2025-02-06 04:33:05,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:33:04" (2/3) ... [2025-02-06 04:33:05,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66745642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:33:05, skipping insertion in model container [2025-02-06 04:33:05,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:33:05" (3/3) ... [2025-02-06 04:33:05,513 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2025-02-06 04:33:05,524 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:33:05,525 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-chromosome-subst.wvr.c that has 4 procedures, 26 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-02-06 04:33:05,526 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:33:05,595 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 04:33:05,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 83 flow [2025-02-06 04:33:05,644 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2025-02-06 04:33:05,646 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:33:05,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 28 events. 6/28 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2025-02-06 04:33:05,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 31 transitions, 83 flow [2025-02-06 04:33:05,650 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 72 flow [2025-02-06 04:33:05,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:33:05,663 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;@1acc4a73, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:33:05,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:33:05,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:33:05,672 INFO L124 PetriNetUnfolderBase]: 6/26 cut-off events. [2025-02-06 04:33:05,672 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 04:33:05,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:05,673 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 04:33:05,673 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 04:33:05,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash 2130209362, now seen corresponding path program 1 times [2025-02-06 04:33:05,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:05,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595778613] [2025-02-06 04:33:05,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:05,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 04:33:05,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:33:05,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:05,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:33:06,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:06,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595778613] [2025-02-06 04:33:06,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595778613] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:06,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:06,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:33:06,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803060851] [2025-02-06 04:33:06,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:06,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:33:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:06,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:33:06,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:33:06,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:06,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 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 04:33:06,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:06,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:06,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:06,295 INFO L124 PetriNetUnfolderBase]: 341/503 cut-off events. [2025-02-06 04:33:06,295 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2025-02-06 04:33:06,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 503 events. 341/503 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1551 event pairs, 124 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 890. Up to 299 conditions per place. [2025-02-06 04:33:06,298 INFO L140 encePairwiseOnDemand]: 28/31 looper letters, 36 selfloop transitions, 2 changer transitions 4/43 dead transitions. [2025-02-06 04:33:06,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 203 flow [2025-02-06 04:33:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:33:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:33:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2025-02-06 04:33:06,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2025-02-06 04:33:06,306 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 72 flow. Second operand 3 states and 55 transitions. [2025-02-06 04:33:06,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 203 flow [2025-02-06 04:33:06,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-06 04:33:06,310 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 72 flow [2025-02-06 04:33:06,312 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2025-02-06 04:33:06,313 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2025-02-06 04:33:06,313 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 72 flow [2025-02-06 04:33:06,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 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 04:33:06,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:06,314 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:06,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:33:06,314 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 04:33:06,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:06,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1412122613, now seen corresponding path program 1 times [2025-02-06 04:33:06,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:06,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950333770] [2025-02-06 04:33:06,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:06,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:06,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 04:33:06,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:33:06,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:06,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:06,434 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 04:33:06,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:06,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950333770] [2025-02-06 04:33:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950333770] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:06,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:33:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702077345] [2025-02-06 04:33:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:06,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:33:06,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:06,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:33:06,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:33:06,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:06,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 04:33:06,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:06,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:06,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:06,516 INFO L124 PetriNetUnfolderBase]: 341/506 cut-off events. [2025-02-06 04:33:06,517 INFO L125 PetriNetUnfolderBase]: For 137/137 co-relation queries the response was YES. [2025-02-06 04:33:06,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 506 events. 341/506 cut-off events. For 137/137 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1400 event pairs, 228 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 437. Up to 503 conditions per place. [2025-02-06 04:33:06,518 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2025-02-06 04:33:06,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 138 flow [2025-02-06 04:33:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:33:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:33:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-02-06 04:33:06,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4731182795698925 [2025-02-06 04:33:06,519 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 72 flow. Second operand 3 states and 44 transitions. [2025-02-06 04:33:06,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 138 flow [2025-02-06 04:33:06,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:33:06,522 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 102 flow [2025-02-06 04:33:06,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2025-02-06 04:33:06,523 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2025-02-06 04:33:06,523 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 102 flow [2025-02-06 04:33:06,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 04:33:06,523 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:06,523 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:06,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:33:06,523 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 04:33:06,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1644772774, now seen corresponding path program 1 times [2025-02-06 04:33:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:06,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668366720] [2025-02-06 04:33:06,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:06,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:33:06,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:33:06,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:06,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:06,635 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 04:33:06,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668366720] [2025-02-06 04:33:06,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668366720] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934359093] [2025-02-06 04:33:06,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:06,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:06,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:06,637 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 04:33:06,638 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 04:33:06,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:33:06,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:33:06,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:06,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:06,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 04:33:06,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:06,779 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 04:33:06,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:06,794 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 04:33:06,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934359093] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:33:06,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:33:06,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-06 04:33:06,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613567161] [2025-02-06 04:33:06,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:33:06,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 04:33:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:06,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 04:33:06,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:33:06,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:06,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 102 flow. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 04:33:06,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:06,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:06,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:06,896 INFO L124 PetriNetUnfolderBase]: 341/515 cut-off events. [2025-02-06 04:33:06,896 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2025-02-06 04:33:06,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 515 events. 341/515 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1400 event pairs, 228 based on Foata normal form. 6/436 useless extension candidates. Maximal degree in co-relation 1106. Up to 503 conditions per place. [2025-02-06 04:33:06,898 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 15 changer transitions 0/40 dead transitions. [2025-02-06 04:33:06,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 216 flow [2025-02-06 04:33:06,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:33:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:33:06,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2025-02-06 04:33:06,899 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2025-02-06 04:33:06,899 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 102 flow. Second operand 6 states and 71 transitions. [2025-02-06 04:33:06,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 216 flow [2025-02-06 04:33:06,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:33:06,900 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 192 flow [2025-02-06 04:33:06,900 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2025-02-06 04:33:06,901 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2025-02-06 04:33:06,901 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 192 flow [2025-02-06 04:33:06,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 04:33:06,901 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:06,901 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:06,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 04:33:07,101 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 04:33:07,102 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 04:33:07,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash -474163093, now seen corresponding path program 2 times [2025-02-06 04:33:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:07,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628997404] [2025-02-06 04:33:07,103 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:07,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:07,116 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-06 04:33:07,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 21 of 34 statements. [2025-02-06 04:33:07,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:33:07,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-06 04:33:07,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:07,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628997404] [2025-02-06 04:33:07,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628997404] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:07,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:07,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:33:07,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444112590] [2025-02-06 04:33:07,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:07,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:33:07,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:07,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:33:07,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:33:07,437 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:07,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:07,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:07,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:07,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:07,642 INFO L124 PetriNetUnfolderBase]: 681/1011 cut-off events. [2025-02-06 04:33:07,642 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2025-02-06 04:33:07,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2260 conditions, 1011 events. 681/1011 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3584 event pairs, 228 based on Foata normal form. 1/804 useless extension candidates. Maximal degree in co-relation 2171. Up to 539 conditions per place. [2025-02-06 04:33:07,645 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 61 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2025-02-06 04:33:07,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 403 flow [2025-02-06 04:33:07,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:33:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:33:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-02-06 04:33:07,646 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2025-02-06 04:33:07,646 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 192 flow. Second operand 4 states and 69 transitions. [2025-02-06 04:33:07,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 403 flow [2025-02-06 04:33:07,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 68 transitions, 379 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-02-06 04:33:07,649 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 201 flow [2025-02-06 04:33:07,649 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2025-02-06 04:33:07,649 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2025-02-06 04:33:07,649 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 201 flow [2025-02-06 04:33:07,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:07,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:07,649 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:07,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:33:07,650 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 04:33:07,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash 863113697, now seen corresponding path program 3 times [2025-02-06 04:33:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:07,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750765696] [2025-02-06 04:33:07,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:33:07,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:07,665 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 3 equivalence classes. [2025-02-06 04:33:07,682 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 21 of 34 statements. [2025-02-06 04:33:07,682 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:33:07,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-06 04:33:07,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:07,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750765696] [2025-02-06 04:33:07,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750765696] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:07,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:33:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022271310] [2025-02-06 04:33:07,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:07,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:33:07,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:07,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:33:07,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:33:07,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:07,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:07,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:07,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:07,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:08,240 INFO L124 PetriNetUnfolderBase]: 979/1443 cut-off events. [2025-02-06 04:33:08,240 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2025-02-06 04:33:08,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3776 conditions, 1443 events. 979/1443 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5435 event pairs, 380 based on Foata normal form. 1/1442 useless extension candidates. Maximal degree in co-relation 3696. Up to 862 conditions per place. [2025-02-06 04:33:08,247 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 61 selfloop transitions, 7 changer transitions 1/70 dead transitions. [2025-02-06 04:33:08,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 425 flow [2025-02-06 04:33:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:33:08,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:33:08,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-02-06 04:33:08,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2025-02-06 04:33:08,248 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 201 flow. Second operand 4 states and 67 transitions. [2025-02-06 04:33:08,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 425 flow [2025-02-06 04:33:08,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 70 transitions, 425 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:33:08,251 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 250 flow [2025-02-06 04:33:08,251 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2025-02-06 04:33:08,251 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2025-02-06 04:33:08,251 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 250 flow [2025-02-06 04:33:08,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:08,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:08,251 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:08,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:33:08,251 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 04:33:08,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -261290427, now seen corresponding path program 1 times [2025-02-06 04:33:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513339798] [2025-02-06 04:33:08,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:08,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 04:33:08,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 04:33:08,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:08,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 04:33:08,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:08,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513339798] [2025-02-06 04:33:08,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513339798] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:08,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440093521] [2025-02-06 04:33:08,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:08,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:08,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:08,393 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 04:33:08,398 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 04:33:08,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 04:33:08,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 04:33:08,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:08,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:08,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 04:33:08,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 04:33:08,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-06 04:33:08,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440093521] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:33:08,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:33:08,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-06 04:33:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954310657] [2025-02-06 04:33:08,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:33:08,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:33:08,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:08,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:33:08,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:33:08,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:08,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 250 flow. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 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 04:33:08,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:08,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:08,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:08,768 INFO L124 PetriNetUnfolderBase]: 979/1446 cut-off events. [2025-02-06 04:33:08,768 INFO L125 PetriNetUnfolderBase]: For 1559/1559 co-relation queries the response was YES. [2025-02-06 04:33:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 1446 events. 979/1446 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5373 event pairs, 672 based on Foata normal form. 1/1445 useless extension candidates. Maximal degree in co-relation 4195. Up to 1429 conditions per place. [2025-02-06 04:33:08,774 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 18 changer transitions 0/51 dead transitions. [2025-02-06 04:33:08,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 368 flow [2025-02-06 04:33:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:33:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:33:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2025-02-06 04:33:08,774 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2025-02-06 04:33:08,775 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 250 flow. Second operand 7 states and 72 transitions. [2025-02-06 04:33:08,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 368 flow [2025-02-06 04:33:08,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 366 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-02-06 04:33:08,778 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 316 flow [2025-02-06 04:33:08,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-02-06 04:33:08,778 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2025-02-06 04:33:08,778 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 316 flow [2025-02-06 04:33:08,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 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 04:33:08,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:08,779 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:08,785 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 04:33:08,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:08,983 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 04:33:08,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:08,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1854521258, now seen corresponding path program 2 times [2025-02-06 04:33:08,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:08,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96661341] [2025-02-06 04:33:08,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:08,997 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-06 04:33:09,037 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:09,037 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:09,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96661341] [2025-02-06 04:33:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96661341] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128134710] [2025-02-06 04:33:09,249 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:09,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:09,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:09,251 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 04:33:09,252 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 04:33:09,322 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-06 04:33:09,363 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:09,363 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:09,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:09,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:33:09,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:09,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128134710] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:09,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:09,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2025-02-06 04:33:09,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639939418] [2025-02-06 04:33:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:09,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:09,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:09,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-06 04:33:09,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:09,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:09,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:09,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:09,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:09,696 INFO L124 PetriNetUnfolderBase]: 1039/1532 cut-off events. [2025-02-06 04:33:09,696 INFO L125 PetriNetUnfolderBase]: For 1322/1322 co-relation queries the response was YES. [2025-02-06 04:33:09,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 1532 events. 1039/1532 cut-off events. For 1322/1322 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6126 event pairs, 108 based on Foata normal form. 26/1558 useless extension candidates. Maximal degree in co-relation 4449. Up to 645 conditions per place. [2025-02-06 04:33:09,702 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 77 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2025-02-06 04:33:09,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 617 flow [2025-02-06 04:33:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2025-02-06 04:33:09,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2025-02-06 04:33:09,703 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 316 flow. Second operand 5 states and 81 transitions. [2025-02-06 04:33:09,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 617 flow [2025-02-06 04:33:09,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 581 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-02-06 04:33:09,706 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 327 flow [2025-02-06 04:33:09,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2025-02-06 04:33:09,707 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2025-02-06 04:33:09,707 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 327 flow [2025-02-06 04:33:09,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:09,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:09,707 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:09,713 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 04:33:09,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:09,908 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 04:33:09,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1967193479, now seen corresponding path program 1 times [2025-02-06 04:33:09,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:09,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452560269] [2025-02-06 04:33:09,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:09,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:09,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 04:33:09,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:09,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:09,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:10,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:10,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452560269] [2025-02-06 04:33:10,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452560269] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:10,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664688648] [2025-02-06 04:33:10,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:10,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:10,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:10,154 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 04:33:10,159 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 04:33:10,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 04:33:10,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:10,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:10,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:10,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:33:10,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:10,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:10,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664688648] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:10,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:10,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2025-02-06 04:33:10,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395503424] [2025-02-06 04:33:10,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:10,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:10,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:10,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:33:10,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:10,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:10,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:10,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:10,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:10,559 INFO L124 PetriNetUnfolderBase]: 1097/1614 cut-off events. [2025-02-06 04:33:10,559 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2025-02-06 04:33:10,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5333 conditions, 1614 events. 1097/1614 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6270 event pairs, 204 based on Foata normal form. 24/1638 useless extension candidates. Maximal degree in co-relation 5231. Up to 639 conditions per place. [2025-02-06 04:33:10,566 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 73 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2025-02-06 04:33:10,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 85 transitions, 624 flow [2025-02-06 04:33:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2025-02-06 04:33:10,567 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2025-02-06 04:33:10,567 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 327 flow. Second operand 5 states and 77 transitions. [2025-02-06 04:33:10,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 85 transitions, 624 flow [2025-02-06 04:33:10,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 605 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 04:33:10,574 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 366 flow [2025-02-06 04:33:10,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2025-02-06 04:33:10,575 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2025-02-06 04:33:10,575 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 366 flow [2025-02-06 04:33:10,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:10,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:10,575 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:10,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 04:33:10,775 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,SelfDestructingSolverStorable7 [2025-02-06 04:33:10,776 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 04:33:10,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1507332167, now seen corresponding path program 2 times [2025-02-06 04:33:10,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:10,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369516394] [2025-02-06 04:33:10,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:10,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:10,794 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-06 04:33:10,826 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:10,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:10,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:10,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:10,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369516394] [2025-02-06 04:33:10,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369516394] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:10,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464485157] [2025-02-06 04:33:10,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:10,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:10,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:10,992 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 04:33:10,993 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 04:33:11,074 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-06 04:33:11,112 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:11,112 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:11,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:11,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:33:11,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:11,221 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:11,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:33:11,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464485157] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:11,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:33:11,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-06 04:33:11,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296012840] [2025-02-06 04:33:11,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:11,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:11,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:11,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:11,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:33:11,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:11,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:11,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:11,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:11,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:11,482 INFO L124 PetriNetUnfolderBase]: 1121/1668 cut-off events. [2025-02-06 04:33:11,482 INFO L125 PetriNetUnfolderBase]: For 3380/3380 co-relation queries the response was YES. [2025-02-06 04:33:11,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1668 events. 1121/1668 cut-off events. For 3380/3380 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6851 event pairs, 338 based on Foata normal form. 14/1682 useless extension candidates. Maximal degree in co-relation 5738. Up to 909 conditions per place. [2025-02-06 04:33:11,489 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 70 selfloop transitions, 8 changer transitions 12/91 dead transitions. [2025-02-06 04:33:11,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 91 transitions, 692 flow [2025-02-06 04:33:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-02-06 04:33:11,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2025-02-06 04:33:11,490 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 366 flow. Second operand 5 states and 80 transitions. [2025-02-06 04:33:11,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 91 transitions, 692 flow [2025-02-06 04:33:11,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 91 transitions, 670 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 04:33:11,498 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 383 flow [2025-02-06 04:33:11,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2025-02-06 04:33:11,498 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2025-02-06 04:33:11,498 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 383 flow [2025-02-06 04:33:11,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:11,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:11,499 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:11,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:33:11,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:11,699 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 04:33:11,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -773009621, now seen corresponding path program 3 times [2025-02-06 04:33:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:11,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213825479] [2025-02-06 04:33:11,700 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:33:11,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:11,712 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:11,732 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 38 statements. [2025-02-06 04:33:11,732 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:33:11,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:11,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213825479] [2025-02-06 04:33:11,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213825479] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:11,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604022504] [2025-02-06 04:33:11,859 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:33:11,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:11,862 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 04:33:11,865 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 04:33:11,939 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:11,972 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 38 statements. [2025-02-06 04:33:11,972 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:33:11,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:11,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:33:11,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:12,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:12,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604022504] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:12,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:12,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-02-06 04:33:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044319674] [2025-02-06 04:33:12,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:12,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:12,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:12,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:33:12,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:12,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 383 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:12,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:12,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:12,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:12,390 INFO L124 PetriNetUnfolderBase]: 1179/1752 cut-off events. [2025-02-06 04:33:12,390 INFO L125 PetriNetUnfolderBase]: For 4316/4316 co-relation queries the response was YES. [2025-02-06 04:33:12,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6695 conditions, 1752 events. 1179/1752 cut-off events. For 4316/4316 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7151 event pairs, 394 based on Foata normal form. 24/1776 useless extension candidates. Maximal degree in co-relation 6587. Up to 933 conditions per place. [2025-02-06 04:33:12,399 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 79 selfloop transitions, 10 changer transitions 1/91 dead transitions. [2025-02-06 04:33:12,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 705 flow [2025-02-06 04:33:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:12,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2025-02-06 04:33:12,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5419354838709678 [2025-02-06 04:33:12,400 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 383 flow. Second operand 5 states and 84 transitions. [2025-02-06 04:33:12,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 705 flow [2025-02-06 04:33:12,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 685 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-06 04:33:12,407 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 401 flow [2025-02-06 04:33:12,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2025-02-06 04:33:12,408 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2025-02-06 04:33:12,408 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 401 flow [2025-02-06 04:33:12,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:12,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:12,408 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:12,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 04:33:12,608 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,SelfDestructingSolverStorable9 [2025-02-06 04:33:12,609 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 04:33:12,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:12,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1134574818, now seen corresponding path program 3 times [2025-02-06 04:33:12,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:12,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546506467] [2025-02-06 04:33:12,610 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:33:12,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:12,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:12,648 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 38 statements. [2025-02-06 04:33:12,649 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:33:12,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:12,775 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:12,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:12,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546506467] [2025-02-06 04:33:12,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546506467] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:12,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955601850] [2025-02-06 04:33:12,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:33:12,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:12,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:12,777 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 04:33:12,778 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 04:33:12,861 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:12,892 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 29 of 38 statements. [2025-02-06 04:33:12,892 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:33:12,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:12,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:33:12,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:12,964 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:12,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955601850] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:13,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:13,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-02-06 04:33:13,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715578746] [2025-02-06 04:33:13,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:13,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:13,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:13,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:13,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:33:13,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:13,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 401 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:13,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:13,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:13,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:13,303 INFO L124 PetriNetUnfolderBase]: 1333/1988 cut-off events. [2025-02-06 04:33:13,304 INFO L125 PetriNetUnfolderBase]: For 4539/4539 co-relation queries the response was YES. [2025-02-06 04:33:13,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7511 conditions, 1988 events. 1333/1988 cut-off events. For 4539/4539 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8517 event pairs, 152 based on Foata normal form. 26/2014 useless extension candidates. Maximal degree in co-relation 7403. Up to 1367 conditions per place. [2025-02-06 04:33:13,312 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 78 selfloop transitions, 13 changer transitions 1/93 dead transitions. [2025-02-06 04:33:13,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 738 flow [2025-02-06 04:33:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2025-02-06 04:33:13,313 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5096774193548387 [2025-02-06 04:33:13,313 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 401 flow. Second operand 5 states and 79 transitions. [2025-02-06 04:33:13,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 738 flow [2025-02-06 04:33:13,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 716 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-02-06 04:33:13,323 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 445 flow [2025-02-06 04:33:13,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2025-02-06 04:33:13,323 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2025-02-06 04:33:13,323 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 445 flow [2025-02-06 04:33:13,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:13,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:13,324 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:13,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 04:33:13,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:13,525 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 04:33:13,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash 3342665, now seen corresponding path program 4 times [2025-02-06 04:33:13,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:13,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103535129] [2025-02-06 04:33:13,525 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:33:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:13,537 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-02-06 04:33:13,546 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:13,546 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:33:13,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:13,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:13,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103535129] [2025-02-06 04:33:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103535129] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:13,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:13,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:33:13,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590211400] [2025-02-06 04:33:13,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:13,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:13,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:13,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:13,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:13,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 445 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:13,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:13,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:13,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:14,010 INFO L124 PetriNetUnfolderBase]: 1281/1904 cut-off events. [2025-02-06 04:33:14,011 INFO L125 PetriNetUnfolderBase]: For 5477/5477 co-relation queries the response was YES. [2025-02-06 04:33:14,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7629 conditions, 1904 events. 1281/1904 cut-off events. For 5477/5477 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7979 event pairs, 482 based on Foata normal form. 14/1918 useless extension candidates. Maximal degree in co-relation 7518. Up to 1168 conditions per place. [2025-02-06 04:33:14,018 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 69 selfloop transitions, 10 changer transitions 10/90 dead transitions. [2025-02-06 04:33:14,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 739 flow [2025-02-06 04:33:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2025-02-06 04:33:14,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5096774193548387 [2025-02-06 04:33:14,021 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 445 flow. Second operand 5 states and 79 transitions. [2025-02-06 04:33:14,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 739 flow [2025-02-06 04:33:14,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 732 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 04:33:14,030 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 463 flow [2025-02-06 04:33:14,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2025-02-06 04:33:14,031 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2025-02-06 04:33:14,031 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 463 flow [2025-02-06 04:33:14,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:14,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:14,031 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:14,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:33:14,031 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 04:33:14,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash -823411226, now seen corresponding path program 4 times [2025-02-06 04:33:14,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:14,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045067507] [2025-02-06 04:33:14,032 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:33:14,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:14,046 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-02-06 04:33:14,075 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:14,077 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:33:14,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:14,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:14,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045067507] [2025-02-06 04:33:14,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045067507] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:14,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:14,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:33:14,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864687919] [2025-02-06 04:33:14,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:14,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:14,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:14,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:14,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:14,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:14,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:14,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:14,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:14,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:14,532 INFO L124 PetriNetUnfolderBase]: 1187/1750 cut-off events. [2025-02-06 04:33:14,532 INFO L125 PetriNetUnfolderBase]: For 5440/5440 co-relation queries the response was YES. [2025-02-06 04:33:14,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7369 conditions, 1750 events. 1187/1750 cut-off events. For 5440/5440 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7082 event pairs, 452 based on Foata normal form. 12/1762 useless extension candidates. Maximal degree in co-relation 7257. Up to 1093 conditions per place. [2025-02-06 04:33:14,543 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 68 selfloop transitions, 10 changer transitions 7/86 dead transitions. [2025-02-06 04:33:14,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 86 transitions, 727 flow [2025-02-06 04:33:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2025-02-06 04:33:14,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2025-02-06 04:33:14,545 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 463 flow. Second operand 5 states and 75 transitions. [2025-02-06 04:33:14,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 86 transitions, 727 flow [2025-02-06 04:33:14,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 86 transitions, 699 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-02-06 04:33:14,556 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 462 flow [2025-02-06 04:33:14,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=462, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2025-02-06 04:33:14,557 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2025-02-06 04:33:14,557 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 462 flow [2025-02-06 04:33:14,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:14,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:14,557 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:14,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:33:14,557 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 04:33:14,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1696968805, now seen corresponding path program 5 times [2025-02-06 04:33:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:14,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724578384] [2025-02-06 04:33:14,558 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:33:14,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:14,571 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:14,594 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:14,594 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-06 04:33:14,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:14,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:14,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724578384] [2025-02-06 04:33:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724578384] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:14,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:14,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:33:14,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225917662] [2025-02-06 04:33:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:14,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:14,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:14,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:14,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:14,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:14,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:14,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:14,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:14,987 INFO L124 PetriNetUnfolderBase]: 1142/1693 cut-off events. [2025-02-06 04:33:14,987 INFO L125 PetriNetUnfolderBase]: For 5940/5940 co-relation queries the response was YES. [2025-02-06 04:33:14,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 1693 events. 1142/1693 cut-off events. For 5940/5940 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6818 event pairs, 178 based on Foata normal form. 28/1721 useless extension candidates. Maximal degree in co-relation 7164. Up to 969 conditions per place. [2025-02-06 04:33:14,994 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 78 selfloop transitions, 9 changer transitions 1/89 dead transitions. [2025-02-06 04:33:14,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 89 transitions, 767 flow [2025-02-06 04:33:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:14,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-02-06 04:33:14,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2025-02-06 04:33:14,995 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 462 flow. Second operand 5 states and 74 transitions. [2025-02-06 04:33:14,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 89 transitions, 767 flow [2025-02-06 04:33:15,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 89 transitions, 739 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-02-06 04:33:15,007 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 480 flow [2025-02-06 04:33:15,007 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2025-02-06 04:33:15,008 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2025-02-06 04:33:15,008 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 480 flow [2025-02-06 04:33:15,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:15,008 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:15,008 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:15,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 04:33:15,008 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 04:33:15,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1201413170, now seen corresponding path program 5 times [2025-02-06 04:33:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:15,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004956733] [2025-02-06 04:33:15,009 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:33:15,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:15,020 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:15,038 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:15,038 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-06 04:33:15,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:15,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:15,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004956733] [2025-02-06 04:33:15,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004956733] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:15,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460605372] [2025-02-06 04:33:15,267 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:33:15,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:15,271 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 04:33:15,275 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 04:33:15,364 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:15,577 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:15,577 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-06 04:33:15,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:15,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:33:15,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:15,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:15,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460605372] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:15,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:15,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 6] total 12 [2025-02-06 04:33:15,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564053952] [2025-02-06 04:33:15,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:15,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:15,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:15,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:15,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:33:15,817 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:15,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 480 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:15,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:15,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:15,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:16,054 INFO L124 PetriNetUnfolderBase]: 1079/1606 cut-off events. [2025-02-06 04:33:16,054 INFO L125 PetriNetUnfolderBase]: For 6779/6779 co-relation queries the response was YES. [2025-02-06 04:33:16,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7036 conditions, 1606 events. 1079/1606 cut-off events. For 6779/6779 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6383 event pairs, 383 based on Foata normal form. 26/1632 useless extension candidates. Maximal degree in co-relation 6921. Up to 1004 conditions per place. [2025-02-06 04:33:16,061 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 77 selfloop transitions, 12 changer transitions 3/93 dead transitions. [2025-02-06 04:33:16,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 807 flow [2025-02-06 04:33:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2025-02-06 04:33:16,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2025-02-06 04:33:16,063 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 480 flow. Second operand 5 states and 80 transitions. [2025-02-06 04:33:16,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 807 flow [2025-02-06 04:33:16,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 785 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-02-06 04:33:16,076 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 504 flow [2025-02-06 04:33:16,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2025-02-06 04:33:16,077 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2025-02-06 04:33:16,077 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 504 flow [2025-02-06 04:33:16,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:16,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:16,077 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:16,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 04:33:16,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 04:33:16,282 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 04:33:16,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash -357404790, now seen corresponding path program 6 times [2025-02-06 04:33:16,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:16,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092462076] [2025-02-06 04:33:16,283 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:33:16,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:16,294 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:16,323 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 32 of 38 statements. [2025-02-06 04:33:16,323 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 04:33:16,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:16,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:16,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092462076] [2025-02-06 04:33:16,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092462076] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:16,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:33:16,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:33:16,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047647115] [2025-02-06 04:33:16,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:16,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:16,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:16,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:16,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:33:16,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:16,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 504 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:16,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:16,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:16,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:16,695 INFO L124 PetriNetUnfolderBase]: 1101/1656 cut-off events. [2025-02-06 04:33:16,695 INFO L125 PetriNetUnfolderBase]: For 6595/6595 co-relation queries the response was YES. [2025-02-06 04:33:16,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7418 conditions, 1656 events. 1101/1656 cut-off events. For 6595/6595 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6740 event pairs, 383 based on Foata normal form. 12/1668 useless extension candidates. Maximal degree in co-relation 7305. Up to 1004 conditions per place. [2025-02-06 04:33:16,702 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 72 selfloop transitions, 11 changer transitions 12/96 dead transitions. [2025-02-06 04:33:16,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 869 flow [2025-02-06 04:33:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2025-02-06 04:33:16,703 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2025-02-06 04:33:16,703 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 504 flow. Second operand 5 states and 77 transitions. [2025-02-06 04:33:16,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 869 flow [2025-02-06 04:33:16,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 96 transitions, 835 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-02-06 04:33:16,717 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 524 flow [2025-02-06 04:33:16,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2025-02-06 04:33:16,718 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2025-02-06 04:33:16,718 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 524 flow [2025-02-06 04:33:16,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:16,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:16,718 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:16,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 04:33:16,719 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 04:33:16,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:16,719 INFO L85 PathProgramCache]: Analyzing trace with hash 516335890, now seen corresponding path program 7 times [2025-02-06 04:33:16,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:16,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381088951] [2025-02-06 04:33:16,719 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:33:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:16,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 04:33:16,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:16,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:16,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:16,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:16,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381088951] [2025-02-06 04:33:16,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381088951] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:16,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165690286] [2025-02-06 04:33:16,862 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:33:16,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:16,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:16,863 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 04:33:16,869 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 04:33:16,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 04:33:16,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:16,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:16,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:16,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 04:33:16,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:33:17,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:17,254 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:17,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165690286] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:17,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:17,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 9] total 15 [2025-02-06 04:33:17,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876636664] [2025-02-06 04:33:17,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:17,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:33:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:17,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:33:17,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-02-06 04:33:17,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:17,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:17,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:17,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:17,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:17,530 INFO L124 PetriNetUnfolderBase]: 1334/2015 cut-off events. [2025-02-06 04:33:17,530 INFO L125 PetriNetUnfolderBase]: For 10242/10242 co-relation queries the response was YES. [2025-02-06 04:33:17,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9545 conditions, 2015 events. 1334/2015 cut-off events. For 10242/10242 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9049 event pairs, 366 based on Foata normal form. 1/2016 useless extension candidates. Maximal degree in co-relation 9429. Up to 1396 conditions per place. [2025-02-06 04:33:17,539 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 103 selfloop transitions, 26 changer transitions 9/139 dead transitions. [2025-02-06 04:33:17,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 139 transitions, 1451 flow [2025-02-06 04:33:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:33:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:33:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2025-02-06 04:33:17,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2025-02-06 04:33:17,540 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 524 flow. Second operand 6 states and 98 transitions. [2025-02-06 04:33:17,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 139 transitions, 1451 flow [2025-02-06 04:33:17,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 139 transitions, 1386 flow, removed 19 selfloop flow, removed 2 redundant places. [2025-02-06 04:33:17,558 INFO L231 Difference]: Finished difference. Result has 88 places, 88 transitions, 852 flow [2025-02-06 04:33:17,558 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=852, PETRI_PLACES=88, PETRI_TRANSITIONS=88} [2025-02-06 04:33:17,558 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2025-02-06 04:33:17,558 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 88 transitions, 852 flow [2025-02-06 04:33:17,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:33:17,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:17,559 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:17,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 04:33:17,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:17,759 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 04:33:17,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1527684646, now seen corresponding path program 8 times [2025-02-06 04:33:17,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:17,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175786206] [2025-02-06 04:33:17,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:17,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:17,773 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-06 04:33:17,797 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:17,797 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:17,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:17,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:17,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175786206] [2025-02-06 04:33:17,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175786206] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:17,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234997701] [2025-02-06 04:33:17,917 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:33:17,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:17,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:17,922 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 04:33:17,926 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 04:33:18,016 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-06 04:33:18,052 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 04:33:18,053 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:33:18,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:18,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:33:18,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:18,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:33:18,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234997701] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:33:18,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:33:18,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-06 04:33:18,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501950408] [2025-02-06 04:33:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:18,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:18,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:18,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:33:18,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:18,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 852 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:18,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:18,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:18,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:18,379 INFO L124 PetriNetUnfolderBase]: 1262/1893 cut-off events. [2025-02-06 04:33:18,379 INFO L125 PetriNetUnfolderBase]: For 11781/11781 co-relation queries the response was YES. [2025-02-06 04:33:18,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9775 conditions, 1893 events. 1262/1893 cut-off events. For 11781/11781 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8091 event pairs, 427 based on Foata normal form. 20/1913 useless extension candidates. Maximal degree in co-relation 9656. Up to 1100 conditions per place. [2025-02-06 04:33:18,387 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 71 selfloop transitions, 23 changer transitions 20/115 dead transitions. [2025-02-06 04:33:18,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 115 transitions, 1216 flow [2025-02-06 04:33:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-02-06 04:33:18,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49032258064516127 [2025-02-06 04:33:18,389 INFO L175 Difference]: Start difference. First operand has 88 places, 88 transitions, 852 flow. Second operand 5 states and 76 transitions. [2025-02-06 04:33:18,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 115 transitions, 1216 flow [2025-02-06 04:33:18,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 1176 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-02-06 04:33:18,406 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 789 flow [2025-02-06 04:33:18,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=789, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2025-02-06 04:33:18,407 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2025-02-06 04:33:18,407 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 789 flow [2025-02-06 04:33:18,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:18,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:18,407 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:18,417 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 04:33:18,611 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,SelfDestructingSolverStorable17 [2025-02-06 04:33:18,611 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 04:33:18,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:18,611 INFO L85 PathProgramCache]: Analyzing trace with hash 28263449, now seen corresponding path program 6 times [2025-02-06 04:33:18,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:18,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355560254] [2025-02-06 04:33:18,611 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:33:18,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:18,624 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:18,652 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 32 of 38 statements. [2025-02-06 04:33:18,653 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 04:33:18,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:18,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355560254] [2025-02-06 04:33:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355560254] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031662335] [2025-02-06 04:33:18,766 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:33:18,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:18,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:18,769 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 04:33:18,770 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 04:33:18,867 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-02-06 04:33:18,901 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 32 of 38 statements. [2025-02-06 04:33:18,902 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 04:33:18,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:18,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:33:18,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:18,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-06 04:33:19,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031662335] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:19,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:33:19,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2025-02-06 04:33:19,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437339030] [2025-02-06 04:33:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:33:19,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:33:19,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:33:19,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:33:19,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:33:19,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 31 [2025-02-06 04:33:19,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 789 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:19,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:33:19,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 31 [2025-02-06 04:33:19,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:33:19,241 INFO L124 PetriNetUnfolderBase]: 877/1282 cut-off events. [2025-02-06 04:33:19,241 INFO L125 PetriNetUnfolderBase]: For 7346/7346 co-relation queries the response was YES. [2025-02-06 04:33:19,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6510 conditions, 1282 events. 877/1282 cut-off events. For 7346/7346 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4633 event pairs, 118 based on Foata normal form. 18/1300 useless extension candidates. Maximal degree in co-relation 6391. Up to 844 conditions per place. [2025-02-06 04:33:19,246 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 88 selfloop transitions, 18 changer transitions 2/109 dead transitions. [2025-02-06 04:33:19,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 109 transitions, 1150 flow [2025-02-06 04:33:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:33:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:33:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2025-02-06 04:33:19,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2025-02-06 04:33:19,247 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 789 flow. Second operand 5 states and 74 transitions. [2025-02-06 04:33:19,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 109 transitions, 1150 flow [2025-02-06 04:33:19,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 1054 flow, removed 11 selfloop flow, removed 8 redundant places. [2025-02-06 04:33:19,257 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 752 flow [2025-02-06 04:33:19,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=752, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2025-02-06 04:33:19,257 INFO L279 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2025-02-06 04:33:19,257 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 752 flow [2025-02-06 04:33:19,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 04:33:19,258 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:33:19,258 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:33:19,264 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 04:33:19,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:19,458 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 04:33:19,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:33:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1730938163, now seen corresponding path program 1 times [2025-02-06 04:33:19,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:33:19,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314973603] [2025-02-06 04:33:19,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:19,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:33:19,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 04:33:19,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:33:19,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:19,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-02-06 04:33:19,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:33:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314973603] [2025-02-06 04:33:19,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314973603] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:33:19,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275652390] [2025-02-06 04:33:19,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:33:19,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:33:19,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:33:19,628 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 04:33:19,629 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 04:33:19,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 04:33:19,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 04:33:19,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:33:19,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:33:19,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 04:33:19,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:33:19,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 04:33:19,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 52 [2025-02-06 04:33:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:33:20,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:33:33,886 INFO L349 Elim1Store]: treesize reduction 28, result has 94.9 percent of original size [2025-02-06 04:33:33,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 210 treesize of output 583