./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/mult-comm.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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:40:15,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:40:15,543 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:40:15,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:40:15,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:40:15,578 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:40:15,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:40:15,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:40:15,579 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:40:15,579 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:40:15,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:40:15,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:40:15,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:40:15,580 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:40:15,580 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:40:15,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:40:15,584 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:40:15,584 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:40:15,585 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:40:15,585 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:40:15,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:40:15,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:40:15,585 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 -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376 [2025-01-09 16:40:15,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:40:15,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:40:15,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:40:15,912 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:40:15,913 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:40:15,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-comm.wvr.c [2025-01-09 16:40:17,079 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/10c1b069c/fad929341cef4d65aeef551c24c271cb/FLAGe1389c64a [2025-01-09 16:40:17,331 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:40:17,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/mult-comm.wvr.c [2025-01-09 16:40:17,339 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/10c1b069c/fad929341cef4d65aeef551c24c271cb/FLAGe1389c64a [2025-01-09 16:40:17,356 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/10c1b069c/fad929341cef4d65aeef551c24c271cb [2025-01-09 16:40:17,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:40:17,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:40:17,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:40:17,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:40:17,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:40:17,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383f43eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17, skipping insertion in model container [2025-01-09 16:40:17,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:40:17,498 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/mult-comm.wvr.c[1936,1949] [2025-01-09 16:40:17,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:40:17,508 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:40:17,521 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/mult-comm.wvr.c[1936,1949] [2025-01-09 16:40:17,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:40:17,534 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:40:17,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17 WrapperNode [2025-01-09 16:40:17,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:40:17,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:40:17,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:40:17,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:40:17,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,544 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,555 INFO L138 Inliner]: procedures = 20, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2025-01-09 16:40:17,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:40:17,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:40:17,556 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:40:17,556 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:40:17,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,570 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 16:40:17,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,574 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,577 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,582 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:40:17,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:40:17,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:40:17,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:40:17,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (1/1) ... [2025-01-09 16:40:17,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:40:17,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:17,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 16:40:17,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 16:40:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:40:17,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-09 16:40:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-09 16:40:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-09 16:40:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-09 16:40:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:40:17,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:40:17,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:40:17,631 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 16:40:17,695 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:40:17,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:40:17,781 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:40:17,782 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:40:17,856 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:40:17,857 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:40:17,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:40:17 BoogieIcfgContainer [2025-01-09 16:40:17,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:40:17,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:40:17,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:40:17,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:40:17,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:40:17" (1/3) ... [2025-01-09 16:40:17,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efd4031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:40:17, skipping insertion in model container [2025-01-09 16:40:17,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:40:17" (2/3) ... [2025-01-09 16:40:17,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efd4031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:40:17, skipping insertion in model container [2025-01-09 16:40:17,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:40:17" (3/3) ... [2025-01-09 16:40:17,866 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2025-01-09 16:40:17,882 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:40:17,884 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-comm.wvr.c that has 3 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 16:40:17,887 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:40:17,917 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-09 16:40:17,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2025-01-09 16:40:17,955 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2025-01-09 16:40:17,957 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:40:17,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2025-01-09 16:40:17,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2025-01-09 16:40:17,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2025-01-09 16:40:17,966 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:40:17,973 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;@965e65f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:40:17,973 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-01-09 16:40:17,978 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:40:17,978 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2025-01-09 16:40:17,978 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:40:17,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:17,979 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:17,979 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:17,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1367003094, now seen corresponding path program 1 times [2025-01-09 16:40:17,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:17,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113572817] [2025-01-09 16:40:17,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:17,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:18,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 16:40:18,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 16:40:18,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:18,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:18,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:18,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113572817] [2025-01-09 16:40:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113572817] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:40:18,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:40:18,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 16:40:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077257191] [2025-01-09 16:40:18,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:40:18,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 16:40:18,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:18,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 16:40:18,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 16:40:18,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:18,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:18,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:18,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:18,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:18,523 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events. [2025-01-09 16:40:18,523 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-01-09 16:40:18,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 326 event pairs, 22 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place. [2025-01-09 16:40:18,528 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions. [2025-01-09 16:40:18,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow [2025-01-09 16:40:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 16:40:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-09 16:40:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2025-01-09 16:40:18,543 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2025-01-09 16:40:18,544 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 35 transitions. [2025-01-09 16:40:18,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow [2025-01-09 16:40:18,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-09 16:40:18,554 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2025-01-09 16:40:18,557 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2025-01-09 16:40:18,560 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2025-01-09 16:40:18,562 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2025-01-09 16:40:18,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:18,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:18,563 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:18,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:40:18,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:18,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:18,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1071455069, now seen corresponding path program 1 times [2025-01-09 16:40:18,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:18,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308718680] [2025-01-09 16:40:18,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:18,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 16:40:18,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:18,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:18,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:18,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:18,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308718680] [2025-01-09 16:40:18,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308718680] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:18,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633241692] [2025-01-09 16:40:18,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:18,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:18,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:18,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:18,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 16:40:18,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 16:40:18,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:18,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:18,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:18,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:40:18,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:18,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633241692] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:19,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:19,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8 [2025-01-09 16:40:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481716196] [2025-01-09 16:40:19,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:19,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 16:40:19,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:19,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 16:40:19,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-01-09 16:40:19,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:19,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:19,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:19,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:19,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:19,320 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events. [2025-01-09 16:40:19,320 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-01-09 16:40:19,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 350 event pairs, 12 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place. [2025-01-09 16:40:19,321 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions. [2025-01-09 16:40:19,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow [2025-01-09 16:40:19,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:40:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:40:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2025-01-09 16:40:19,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2025-01-09 16:40:19,322 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 59 transitions. [2025-01-09 16:40:19,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow [2025-01-09 16:40:19,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-09 16:40:19,327 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow [2025-01-09 16:40:19,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2025-01-09 16:40:19,328 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places. [2025-01-09 16:40:19,328 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow [2025-01-09 16:40:19,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:19,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:19,328 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:19,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 16:40:19,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:19,529 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:19,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash 165931101, now seen corresponding path program 2 times [2025-01-09 16:40:19,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:19,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351270838] [2025-01-09 16:40:19,530 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:19,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:19,538 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:40:19,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:19,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:19,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:19,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:19,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351270838] [2025-01-09 16:40:19,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351270838] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569269007] [2025-01-09 16:40:19,785 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:19,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:19,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:19,786 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:19,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 16:40:19,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:40:19,826 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:19,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:19,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:19,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:40:19,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:19,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569269007] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:19,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:19,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2025-01-09 16:40:19,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864311250] [2025-01-09 16:40:19,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:19,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 16:40:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:19,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 16:40:19,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-01-09 16:40:19,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:19,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:19,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:19,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:19,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:20,147 INFO L124 PetriNetUnfolderBase]: 113/210 cut-off events. [2025-01-09 16:40:20,147 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-01-09 16:40:20,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 210 events. 113/210 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 674 event pairs, 17 based on Foata normal form. 3/213 useless extension candidates. Maximal degree in co-relation 555. Up to 87 conditions per place. [2025-01-09 16:40:20,152 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 36 selfloop transitions, 17 changer transitions 9/63 dead transitions. [2025-01-09 16:40:20,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 63 transitions, 333 flow [2025-01-09 16:40:20,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 16:40:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-01-09 16:40:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2025-01-09 16:40:20,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2025-01-09 16:40:20,158 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 10 states and 94 transitions. [2025-01-09 16:40:20,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 63 transitions, 333 flow [2025-01-09 16:40:20,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 63 transitions, 315 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-01-09 16:40:20,160 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 175 flow [2025-01-09 16:40:20,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=175, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2025-01-09 16:40:20,161 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2025-01-09 16:40:20,161 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 175 flow [2025-01-09 16:40:20,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:20,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:20,164 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:20,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:20,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:20,365 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:20,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash -100375098, now seen corresponding path program 1 times [2025-01-09 16:40:20,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:20,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291646709] [2025-01-09 16:40:20,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:20,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 16:40:20,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:20,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:20,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:20,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291646709] [2025-01-09 16:40:20,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291646709] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:20,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119378836] [2025-01-09 16:40:20,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:20,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:20,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:20,500 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:20,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 16:40:20,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 16:40:20,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:20,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:20,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:20,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:40:20,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:20,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119378836] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:20,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-01-09 16:40:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362738288] [2025-01-09 16:40:20,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:20,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:40:20,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:20,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:40:20,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:40:20,752 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:20,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 175 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 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) [2025-01-09 16:40:20,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:20,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:20,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:20,956 INFO L124 PetriNetUnfolderBase]: 117/221 cut-off events. [2025-01-09 16:40:20,959 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2025-01-09 16:40:20,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 221 events. 117/221 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 760 event pairs, 19 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 675. Up to 171 conditions per place. [2025-01-09 16:40:20,960 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 33 selfloop transitions, 6 changer transitions 12/52 dead transitions. [2025-01-09 16:40:20,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 349 flow [2025-01-09 16:40:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:40:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:40:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2025-01-09 16:40:20,961 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2025-01-09 16:40:20,961 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 175 flow. Second operand 6 states and 57 transitions. [2025-01-09 16:40:20,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 349 flow [2025-01-09 16:40:20,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 295 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-01-09 16:40:20,965 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 159 flow [2025-01-09 16:40:20,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=159, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2025-01-09 16:40:20,965 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 19 predicate places. [2025-01-09 16:40:20,965 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 159 flow [2025-01-09 16:40:20,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 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) [2025-01-09 16:40:20,966 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:20,966 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:20,972 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 [2025-01-09 16:40:21,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:21,167 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:21,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -167483776, now seen corresponding path program 2 times [2025-01-09 16:40:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:21,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490287376] [2025-01-09 16:40:21,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:21,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:21,174 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:40:21,179 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:21,179 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:21,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:21,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:21,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490287376] [2025-01-09 16:40:21,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490287376] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:21,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493856698] [2025-01-09 16:40:21,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:21,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:21,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:21,279 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:21,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 16:40:21,308 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:40:21,319 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:21,319 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:21,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:21,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:40:21,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:21,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493856698] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:21,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:21,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-01-09 16:40:21,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066218744] [2025-01-09 16:40:21,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:21,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:40:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:21,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:40:21,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:40:21,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:21,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 159 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:21,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:21,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:21,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:21,606 INFO L124 PetriNetUnfolderBase]: 131/242 cut-off events. [2025-01-09 16:40:21,607 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2025-01-09 16:40:21,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 242 events. 131/242 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 825 event pairs, 21 based on Foata normal form. 2/244 useless extension candidates. Maximal degree in co-relation 743. Up to 185 conditions per place. [2025-01-09 16:40:21,610 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 41 selfloop transitions, 14 changer transitions 4/60 dead transitions. [2025-01-09 16:40:21,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 380 flow [2025-01-09 16:40:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:40:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:40:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2025-01-09 16:40:21,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-09 16:40:21,611 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 159 flow. Second operand 8 states and 72 transitions. [2025-01-09 16:40:21,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 380 flow [2025-01-09 16:40:21,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 369 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-01-09 16:40:21,613 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 222 flow [2025-01-09 16:40:21,613 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2025-01-09 16:40:21,614 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2025-01-09 16:40:21,614 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 222 flow [2025-01-09 16:40:21,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:21,614 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:21,614 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:21,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 16:40:21,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:21,817 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:21,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1464972477, now seen corresponding path program 3 times [2025-01-09 16:40:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:21,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781787153] [2025-01-09 16:40:21,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:21,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:21,822 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:40:21,832 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:21,832 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:21,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:21,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:21,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:21,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781787153] [2025-01-09 16:40:21,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781787153] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:21,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569465553] [2025-01-09 16:40:21,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:21,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:21,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:21,983 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:21,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 16:40:22,012 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:40:22,027 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:22,027 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:22,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:22,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:40:22,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:22,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:22,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569465553] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:22,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:22,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2025-01-09 16:40:22,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968517474] [2025-01-09 16:40:22,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:22,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 16:40:22,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:22,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 16:40:22,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-01-09 16:40:22,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:22,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 222 flow. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:22,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:22,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:22,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:22,295 INFO L124 PetriNetUnfolderBase]: 145/265 cut-off events. [2025-01-09 16:40:22,295 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2025-01-09 16:40:22,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 265 events. 145/265 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 941 event pairs, 26 based on Foata normal form. 2/265 useless extension candidates. Maximal degree in co-relation 876. Up to 209 conditions per place. [2025-01-09 16:40:22,297 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 46 selfloop transitions, 14 changer transitions 6/67 dead transitions. [2025-01-09 16:40:22,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 463 flow [2025-01-09 16:40:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 16:40:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-09 16:40:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions. [2025-01-09 16:40:22,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-09 16:40:22,298 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 222 flow. Second operand 8 states and 72 transitions. [2025-01-09 16:40:22,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 463 flow [2025-01-09 16:40:22,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 419 flow, removed 15 selfloop flow, removed 3 redundant places. [2025-01-09 16:40:22,301 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 279 flow [2025-01-09 16:40:22,301 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=279, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2025-01-09 16:40:22,301 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2025-01-09 16:40:22,301 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 279 flow [2025-01-09 16:40:22,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:22,301 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:22,301 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:22,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:22,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:22,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:22,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1501809342, now seen corresponding path program 3 times [2025-01-09 16:40:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973941823] [2025-01-09 16:40:22,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:22,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:22,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:40:22,511 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:22,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:22,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973941823] [2025-01-09 16:40:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973941823] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722078479] [2025-01-09 16:40:22,624 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:22,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:22,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:22,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:22,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 16:40:22,651 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:40:22,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:40:22,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:22,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:22,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 16:40:22,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:22,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:22,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722078479] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:22,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:22,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5] total 13 [2025-01-09 16:40:22,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737558011] [2025-01-09 16:40:22,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:22,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:40:22,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:22,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:40:22,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:40:22,846 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:22,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 279 flow. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:22,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:22,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:22,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:23,009 INFO L124 PetriNetUnfolderBase]: 183/336 cut-off events. [2025-01-09 16:40:23,009 INFO L125 PetriNetUnfolderBase]: For 682/682 co-relation queries the response was YES. [2025-01-09 16:40:23,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 336 events. 183/336 cut-off events. For 682/682 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1277 event pairs, 33 based on Foata normal form. 3/337 useless extension candidates. Maximal degree in co-relation 1177. Up to 238 conditions per place. [2025-01-09 16:40:23,011 INFO L140 encePairwiseOnDemand]: 11/18 looper letters, 55 selfloop transitions, 21 changer transitions 7/84 dead transitions. [2025-01-09 16:40:23,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 84 transitions, 631 flow [2025-01-09 16:40:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 16:40:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-09 16:40:23,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2025-01-09 16:40:23,013 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2025-01-09 16:40:23,014 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 279 flow. Second operand 11 states and 93 transitions. [2025-01-09 16:40:23,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 84 transitions, 631 flow [2025-01-09 16:40:23,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 584 flow, removed 18 selfloop flow, removed 3 redundant places. [2025-01-09 16:40:23,018 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 380 flow [2025-01-09 16:40:23,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=380, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2025-01-09 16:40:23,020 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 41 predicate places. [2025-01-09 16:40:23,020 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 380 flow [2025-01-09 16:40:23,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:23,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:23,020 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:23,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 16:40:23,224 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,SelfDestructingSolverStorable6 [2025-01-09 16:40:23,224 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:23,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash -99436465, now seen corresponding path program 1 times [2025-01-09 16:40:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:23,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072119651] [2025-01-09 16:40:23,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:23,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:23,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:40:23,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:23,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:23,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:23,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:23,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072119651] [2025-01-09 16:40:23,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072119651] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:23,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023077245] [2025-01-09 16:40:23,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:40:23,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:23,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:23,634 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:23,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 16:40:23,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:40:23,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:23,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:23,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:23,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:23,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:23,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:24,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023077245] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:24,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:24,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-01-09 16:40:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485795848] [2025-01-09 16:40:24,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:24,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 16:40:24,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:24,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 16:40:24,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2025-01-09 16:40:24,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:24,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 380 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:24,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:24,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:24,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:25,150 INFO L124 PetriNetUnfolderBase]: 253/483 cut-off events. [2025-01-09 16:40:25,151 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2025-01-09 16:40:25,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1795 conditions, 483 events. 253/483 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2192 event pairs, 23 based on Foata normal form. 3/484 useless extension candidates. Maximal degree in co-relation 1691. Up to 237 conditions per place. [2025-01-09 16:40:25,155 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 83 selfloop transitions, 49 changer transitions 30/163 dead transitions. [2025-01-09 16:40:25,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 163 transitions, 1168 flow [2025-01-09 16:40:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 16:40:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-01-09 16:40:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 199 transitions. [2025-01-09 16:40:25,158 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2025-01-09 16:40:25,158 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 380 flow. Second operand 24 states and 199 transitions. [2025-01-09 16:40:25,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 163 transitions, 1168 flow [2025-01-09 16:40:25,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 163 transitions, 1101 flow, removed 27 selfloop flow, removed 4 redundant places. [2025-01-09 16:40:25,165 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 631 flow [2025-01-09 16:40:25,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=631, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2025-01-09 16:40:25,166 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2025-01-09 16:40:25,167 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 631 flow [2025-01-09 16:40:25,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:25,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:25,167 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:25,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 16:40:25,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:25,368 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:25,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:25,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1746591751, now seen corresponding path program 2 times [2025-01-09 16:40:25,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:25,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747315811] [2025-01-09 16:40:25,368 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:25,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:25,373 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:25,387 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:25,387 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:25,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:25,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:25,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747315811] [2025-01-09 16:40:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747315811] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:25,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654519280] [2025-01-09 16:40:25,721 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:25,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:25,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:25,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:25,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 16:40:25,747 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:25,797 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:25,797 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:25,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:25,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:25,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:25,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:25,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:26,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654519280] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:26,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:26,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-01-09 16:40:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984214544] [2025-01-09 16:40:26,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:26,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 16:40:26,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:26,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 16:40:26,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2025-01-09 16:40:26,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:26,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 631 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:26,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:26,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:26,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:27,264 INFO L124 PetriNetUnfolderBase]: 283/544 cut-off events. [2025-01-09 16:40:27,264 INFO L125 PetriNetUnfolderBase]: For 2723/2723 co-relation queries the response was YES. [2025-01-09 16:40:27,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2550 conditions, 544 events. 283/544 cut-off events. For 2723/2723 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2589 event pairs, 20 based on Foata normal form. 3/545 useless extension candidates. Maximal degree in co-relation 2443. Up to 246 conditions per place. [2025-01-09 16:40:27,269 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 82 selfloop transitions, 73 changer transitions 16/172 dead transitions. [2025-01-09 16:40:27,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 172 transitions, 1556 flow [2025-01-09 16:40:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 16:40:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2025-01-09 16:40:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 199 transitions. [2025-01-09 16:40:27,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2025-01-09 16:40:27,271 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 631 flow. Second operand 24 states and 199 transitions. [2025-01-09 16:40:27,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 172 transitions, 1556 flow [2025-01-09 16:40:27,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 172 transitions, 1372 flow, removed 74 selfloop flow, removed 12 redundant places. [2025-01-09 16:40:27,280 INFO L231 Difference]: Finished difference. Result has 107 places, 112 transitions, 1036 flow [2025-01-09 16:40:27,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1036, PETRI_PLACES=107, PETRI_TRANSITIONS=112} [2025-01-09 16:40:27,282 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 87 predicate places. [2025-01-09 16:40:27,282 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 112 transitions, 1036 flow [2025-01-09 16:40:27,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:27,282 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:27,282 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:27,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:27,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:27,482 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:27,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1825239991, now seen corresponding path program 3 times [2025-01-09 16:40:27,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:27,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989998219] [2025-01-09 16:40:27,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:27,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:27,488 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:27,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:27,500 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:27,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:27,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:27,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989998219] [2025-01-09 16:40:27,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989998219] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:27,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529259117] [2025-01-09 16:40:27,876 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:27,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:27,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:27,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:27,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 16:40:27,907 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:28,031 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:28,031 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:28,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:28,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:28,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:28,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:28,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:28,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529259117] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:28,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:28,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-01-09 16:40:28,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454315671] [2025-01-09 16:40:28,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:28,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 16:40:28,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:28,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 16:40:28,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2025-01-09 16:40:28,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:28,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 112 transitions, 1036 flow. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:28,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:28,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:28,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:29,321 INFO L124 PetriNetUnfolderBase]: 286/554 cut-off events. [2025-01-09 16:40:29,321 INFO L125 PetriNetUnfolderBase]: For 3431/3431 co-relation queries the response was YES. [2025-01-09 16:40:29,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 554 events. 286/554 cut-off events. For 3431/3431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2668 event pairs, 20 based on Foata normal form. 3/553 useless extension candidates. Maximal degree in co-relation 2788. Up to 252 conditions per place. [2025-01-09 16:40:29,324 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 85 selfloop transitions, 78 changer transitions 14/178 dead transitions. [2025-01-09 16:40:29,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 178 transitions, 1802 flow [2025-01-09 16:40:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 16:40:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-01-09 16:40:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 193 transitions. [2025-01-09 16:40:29,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46618357487922707 [2025-01-09 16:40:29,325 INFO L175 Difference]: Start difference. First operand has 107 places, 112 transitions, 1036 flow. Second operand 23 states and 193 transitions. [2025-01-09 16:40:29,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 178 transitions, 1802 flow [2025-01-09 16:40:29,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 178 transitions, 1453 flow, removed 158 selfloop flow, removed 11 redundant places. [2025-01-09 16:40:29,337 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 1064 flow [2025-01-09 16:40:29,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1064, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2025-01-09 16:40:29,337 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 99 predicate places. [2025-01-09 16:40:29,337 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 1064 flow [2025-01-09 16:40:29,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:29,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:29,338 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:29,343 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 [2025-01-09 16:40:29,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:29,542 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:29,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1349494697, now seen corresponding path program 4 times [2025-01-09 16:40:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:29,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550568733] [2025-01-09 16:40:29,542 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:29,545 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:29,558 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:29,559 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:29,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:29,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:29,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550568733] [2025-01-09 16:40:29,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550568733] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:29,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690732326] [2025-01-09 16:40:29,770 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:29,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:29,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:29,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:29,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 16:40:29,795 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:29,815 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:29,815 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:29,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:29,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:29,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:30,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:42,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690732326] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:42,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:42,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-01-09 16:40:42,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789358035] [2025-01-09 16:40:42,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:42,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:40:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:42,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:40:42,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=236, Unknown=3, NotChecked=0, Total=306 [2025-01-09 16:40:42,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:42,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 1064 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:42,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:42,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:42,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:43,374 INFO L124 PetriNetUnfolderBase]: 344/661 cut-off events. [2025-01-09 16:40:43,374 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2025-01-09 16:40:43,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3188 conditions, 661 events. 344/661 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3285 event pairs, 38 based on Foata normal form. 3/648 useless extension candidates. Maximal degree in co-relation 3141. Up to 516 conditions per place. [2025-01-09 16:40:43,378 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 135 selfloop transitions, 45 changer transitions 15/196 dead transitions. [2025-01-09 16:40:43,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 196 transitions, 1951 flow [2025-01-09 16:40:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:40:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:40:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 146 transitions. [2025-01-09 16:40:43,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2025-01-09 16:40:43,381 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 1064 flow. Second operand 18 states and 146 transitions. [2025-01-09 16:40:43,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 196 transitions, 1951 flow [2025-01-09 16:40:43,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 196 transitions, 1751 flow, removed 47 selfloop flow, removed 18 redundant places. [2025-01-09 16:40:43,393 INFO L231 Difference]: Finished difference. Result has 125 places, 153 transitions, 1369 flow [2025-01-09 16:40:43,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1369, PETRI_PLACES=125, PETRI_TRANSITIONS=153} [2025-01-09 16:40:43,393 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 105 predicate places. [2025-01-09 16:40:43,394 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 153 transitions, 1369 flow [2025-01-09 16:40:43,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:43,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:43,394 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:43,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 16:40:43,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:43,595 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:43,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:43,595 INFO L85 PathProgramCache]: Analyzing trace with hash 515800322, now seen corresponding path program 4 times [2025-01-09 16:40:43,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:43,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99946933] [2025-01-09 16:40:43,595 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:43,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:43,598 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:43,611 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:43,611 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:43,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:43,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:43,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99946933] [2025-01-09 16:40:43,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99946933] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:43,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101663179] [2025-01-09 16:40:43,783 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:43,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:43,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:43,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:43,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 16:40:43,813 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:43,829 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:43,829 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:43,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:43,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 16:40:43,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:43,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:44,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101663179] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:44,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:44,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2025-01-09 16:40:44,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876909301] [2025-01-09 16:40:44,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:44,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:40:44,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:44,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:40:44,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:40:44,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:44,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 153 transitions, 1369 flow. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:44,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:44,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:44,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:44,342 INFO L124 PetriNetUnfolderBase]: 336/649 cut-off events. [2025-01-09 16:40:44,342 INFO L125 PetriNetUnfolderBase]: For 2317/2317 co-relation queries the response was YES. [2025-01-09 16:40:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 649 events. 336/649 cut-off events. For 2317/2317 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3254 event pairs, 36 based on Foata normal form. 4/639 useless extension candidates. Maximal degree in co-relation 3188. Up to 518 conditions per place. [2025-01-09 16:40:44,346 INFO L140 encePairwiseOnDemand]: 11/18 looper letters, 134 selfloop transitions, 30 changer transitions 25/190 dead transitions. [2025-01-09 16:40:44,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 190 transitions, 1949 flow [2025-01-09 16:40:44,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 16:40:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-09 16:40:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 109 transitions. [2025-01-09 16:40:44,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2025-01-09 16:40:44,347 INFO L175 Difference]: Start difference. First operand has 125 places, 153 transitions, 1369 flow. Second operand 13 states and 109 transitions. [2025-01-09 16:40:44,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 190 transitions, 1949 flow [2025-01-09 16:40:44,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 190 transitions, 1849 flow, removed 38 selfloop flow, removed 4 redundant places. [2025-01-09 16:40:44,358 INFO L231 Difference]: Finished difference. Result has 135 places, 150 transitions, 1315 flow [2025-01-09 16:40:44,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1315, PETRI_PLACES=135, PETRI_TRANSITIONS=150} [2025-01-09 16:40:44,359 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 115 predicate places. [2025-01-09 16:40:44,359 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 150 transitions, 1315 flow [2025-01-09 16:40:44,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:44,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:44,359 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:44,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 16:40:44,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 16:40:44,563 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:44,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:44,563 INFO L85 PathProgramCache]: Analyzing trace with hash -340303645, now seen corresponding path program 5 times [2025-01-09 16:40:44,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:44,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892504546] [2025-01-09 16:40:44,563 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:40:44,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:44,566 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:44,573 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:44,573 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:44,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:44,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:44,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892504546] [2025-01-09 16:40:44,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892504546] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:44,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525730323] [2025-01-09 16:40:44,887 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:40:44,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:44,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:44,889 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:44,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 16:40:44,911 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:44,936 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:44,936 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:44,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:44,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:44,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:45,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:45,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:45,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525730323] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:45,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:45,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-01-09 16:40:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324293567] [2025-01-09 16:40:45,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:45,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 16:40:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:45,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 16:40:45,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2025-01-09 16:40:45,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:45,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 150 transitions, 1315 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:45,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:45,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:45,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:46,623 INFO L124 PetriNetUnfolderBase]: 360/693 cut-off events. [2025-01-09 16:40:46,623 INFO L125 PetriNetUnfolderBase]: For 2963/2963 co-relation queries the response was YES. [2025-01-09 16:40:46,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 693 events. 360/693 cut-off events. For 2963/2963 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3480 event pairs, 36 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 3505. Up to 508 conditions per place. [2025-01-09 16:40:46,633 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 142 selfloop transitions, 56 changer transitions 9/208 dead transitions. [2025-01-09 16:40:46,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 208 transitions, 2221 flow [2025-01-09 16:40:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 16:40:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-09 16:40:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 149 transitions. [2025-01-09 16:40:46,635 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2025-01-09 16:40:46,635 INFO L175 Difference]: Start difference. First operand has 135 places, 150 transitions, 1315 flow. Second operand 19 states and 149 transitions. [2025-01-09 16:40:46,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 208 transitions, 2221 flow [2025-01-09 16:40:46,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 208 transitions, 2126 flow, removed 22 selfloop flow, removed 9 redundant places. [2025-01-09 16:40:46,648 INFO L231 Difference]: Finished difference. Result has 148 places, 168 transitions, 1686 flow [2025-01-09 16:40:46,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1686, PETRI_PLACES=148, PETRI_TRANSITIONS=168} [2025-01-09 16:40:46,648 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 128 predicate places. [2025-01-09 16:40:46,648 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 168 transitions, 1686 flow [2025-01-09 16:40:46,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:46,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:46,649 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:46,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 16:40:46,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:46,853 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:46,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1887350275, now seen corresponding path program 6 times [2025-01-09 16:40:46,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:46,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171577173] [2025-01-09 16:40:46,854 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:40:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:46,858 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:46,868 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:46,868 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:40:46,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:47,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:47,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171577173] [2025-01-09 16:40:47,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171577173] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:47,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599070949] [2025-01-09 16:40:47,084 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:40:47,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:47,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:47,087 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:47,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 16:40:47,114 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:47,244 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:47,245 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:40:47,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:47,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:47,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:47,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599070949] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:47,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:47,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-01-09 16:40:47,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606333966] [2025-01-09 16:40:47,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:47,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:40:47,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:47,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:40:47,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:40:47,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:47,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 168 transitions, 1686 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:47,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:47,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:47,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:48,480 INFO L124 PetriNetUnfolderBase]: 365/709 cut-off events. [2025-01-09 16:40:48,480 INFO L125 PetriNetUnfolderBase]: For 4393/4393 co-relation queries the response was YES. [2025-01-09 16:40:48,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 709 events. 365/709 cut-off events. For 4393/4393 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3606 event pairs, 38 based on Foata normal form. 4/699 useless extension candidates. Maximal degree in co-relation 3909. Up to 581 conditions per place. [2025-01-09 16:40:48,485 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 148 selfloop transitions, 42 changer transitions 10/201 dead transitions. [2025-01-09 16:40:48,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 201 transitions, 2281 flow [2025-01-09 16:40:48,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 16:40:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-09 16:40:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 116 transitions. [2025-01-09 16:40:48,486 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2025-01-09 16:40:48,486 INFO L175 Difference]: Start difference. First operand has 148 places, 168 transitions, 1686 flow. Second operand 15 states and 116 transitions. [2025-01-09 16:40:48,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 201 transitions, 2281 flow [2025-01-09 16:40:48,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 201 transitions, 2015 flow, removed 109 selfloop flow, removed 10 redundant places. [2025-01-09 16:40:48,500 INFO L231 Difference]: Finished difference. Result has 156 places, 171 transitions, 1594 flow [2025-01-09 16:40:48,500 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1594, PETRI_PLACES=156, PETRI_TRANSITIONS=171} [2025-01-09 16:40:48,500 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 136 predicate places. [2025-01-09 16:40:48,501 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 171 transitions, 1594 flow [2025-01-09 16:40:48,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:48,502 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:48,502 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:48,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 16:40:48,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:48,703 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:48,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2069350979, now seen corresponding path program 7 times [2025-01-09 16:40:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:48,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614710937] [2025-01-09 16:40:48,704 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:40:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:48,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:40:48,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:48,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:48,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:48,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:48,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614710937] [2025-01-09 16:40:48,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614710937] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:48,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881358387] [2025-01-09 16:40:48,949 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:40:48,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:48,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:48,951 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:48,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 16:40:48,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:40:49,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:49,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:40:49,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:49,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:49,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:49,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881358387] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:49,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:49,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-01-09 16:40:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326970784] [2025-01-09 16:40:49,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:49,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:40:49,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:49,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:40:49,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:40:49,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:49,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 171 transitions, 1594 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:49,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:49,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:49,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:50,374 INFO L124 PetriNetUnfolderBase]: 399/766 cut-off events. [2025-01-09 16:40:50,374 INFO L125 PetriNetUnfolderBase]: For 5948/5948 co-relation queries the response was YES. [2025-01-09 16:40:50,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4436 conditions, 766 events. 399/766 cut-off events. For 5948/5948 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3938 event pairs, 41 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 4331. Up to 626 conditions per place. [2025-01-09 16:40:50,383 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 163 selfloop transitions, 52 changer transitions 9/225 dead transitions. [2025-01-09 16:40:50,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 225 transitions, 2562 flow [2025-01-09 16:40:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 16:40:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-09 16:40:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 146 transitions. [2025-01-09 16:40:50,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2025-01-09 16:40:50,389 INFO L175 Difference]: Start difference. First operand has 156 places, 171 transitions, 1594 flow. Second operand 20 states and 146 transitions. [2025-01-09 16:40:50,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 225 transitions, 2562 flow [2025-01-09 16:40:50,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 225 transitions, 2433 flow, removed 32 selfloop flow, removed 12 redundant places. [2025-01-09 16:40:50,424 INFO L231 Difference]: Finished difference. Result has 169 places, 190 transitions, 1955 flow [2025-01-09 16:40:50,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1955, PETRI_PLACES=169, PETRI_TRANSITIONS=190} [2025-01-09 16:40:50,425 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 149 predicate places. [2025-01-09 16:40:50,425 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 190 transitions, 1955 flow [2025-01-09 16:40:50,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:50,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:50,425 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:50,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-09 16:40:50,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-09 16:40:50,630 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:50,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash -257186755, now seen corresponding path program 8 times [2025-01-09 16:40:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:50,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415125659] [2025-01-09 16:40:50,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:50,634 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:50,642 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:50,643 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:50,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415125659] [2025-01-09 16:40:50,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415125659] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086719426] [2025-01-09 16:40:50,953 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:40:50,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:50,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:50,954 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:50,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 16:40:50,980 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:51,012 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:51,012 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:51,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:51,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:51,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:51,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086719426] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:51,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-01-09 16:40:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535278448] [2025-01-09 16:40:51,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:51,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:40:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:51,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:40:51,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:40:51,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:51,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 190 transitions, 1955 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:51,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:51,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:51,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:52,315 INFO L124 PetriNetUnfolderBase]: 394/745 cut-off events. [2025-01-09 16:40:52,316 INFO L125 PetriNetUnfolderBase]: For 6836/6836 co-relation queries the response was YES. [2025-01-09 16:40:52,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4513 conditions, 745 events. 394/745 cut-off events. For 6836/6836 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3772 event pairs, 38 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 4416. Up to 581 conditions per place. [2025-01-09 16:40:52,321 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 148 selfloop transitions, 62 changer transitions 8/219 dead transitions. [2025-01-09 16:40:52,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 219 transitions, 2541 flow [2025-01-09 16:40:52,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 16:40:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-09 16:40:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 128 transitions. [2025-01-09 16:40:52,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41830065359477125 [2025-01-09 16:40:52,322 INFO L175 Difference]: Start difference. First operand has 169 places, 190 transitions, 1955 flow. Second operand 17 states and 128 transitions. [2025-01-09 16:40:52,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 219 transitions, 2541 flow [2025-01-09 16:40:52,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 219 transitions, 2313 flow, removed 93 selfloop flow, removed 11 redundant places. [2025-01-09 16:40:52,341 INFO L231 Difference]: Finished difference. Result has 174 places, 191 transitions, 1959 flow [2025-01-09 16:40:52,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1959, PETRI_PLACES=174, PETRI_TRANSITIONS=191} [2025-01-09 16:40:52,342 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 154 predicate places. [2025-01-09 16:40:52,342 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 191 transitions, 1959 flow [2025-01-09 16:40:52,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:52,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:52,342 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:52,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:52,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-09 16:40:52,547 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:52,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1986234089, now seen corresponding path program 9 times [2025-01-09 16:40:52,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:52,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593113651] [2025-01-09 16:40:52,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:52,550 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:52,558 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:52,561 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:52,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593113651] [2025-01-09 16:40:52,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593113651] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961029275] [2025-01-09 16:40:52,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:40:52,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:52,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:52,785 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:52,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 16:40:52,817 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:52,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:52,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:40:52,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:52,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:52,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:52,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:53,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961029275] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:53,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:53,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-01-09 16:40:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490549922] [2025-01-09 16:40:53,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:53,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:40:53,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:53,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:40:53,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:40:53,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:53,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 191 transitions, 1959 flow. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:53,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:53,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:53,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:54,236 INFO L124 PetriNetUnfolderBase]: 396/751 cut-off events. [2025-01-09 16:40:54,236 INFO L125 PetriNetUnfolderBase]: For 6914/6914 co-relation queries the response was YES. [2025-01-09 16:40:54,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 751 events. 396/751 cut-off events. For 6914/6914 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3837 event pairs, 41 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 4441. Up to 616 conditions per place. [2025-01-09 16:40:54,242 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 164 selfloop transitions, 54 changer transitions 7/226 dead transitions. [2025-01-09 16:40:54,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 226 transitions, 2653 flow [2025-01-09 16:40:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:40:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:40:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 138 transitions. [2025-01-09 16:40:54,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2025-01-09 16:40:54,243 INFO L175 Difference]: Start difference. First operand has 174 places, 191 transitions, 1959 flow. Second operand 18 states and 138 transitions. [2025-01-09 16:40:54,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 226 transitions, 2653 flow [2025-01-09 16:40:54,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 226 transitions, 2500 flow, removed 32 selfloop flow, removed 13 redundant places. [2025-01-09 16:40:54,265 INFO L231 Difference]: Finished difference. Result has 178 places, 196 transitions, 2049 flow [2025-01-09 16:40:54,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2049, PETRI_PLACES=178, PETRI_TRANSITIONS=196} [2025-01-09 16:40:54,268 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 158 predicate places. [2025-01-09 16:40:54,268 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 196 transitions, 2049 flow [2025-01-09 16:40:54,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:54,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:54,268 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:54,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:54,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 16:40:54,469 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:54,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1449264031, now seen corresponding path program 10 times [2025-01-09 16:40:54,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:54,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183015632] [2025-01-09 16:40:54,471 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:54,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:54,473 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:54,482 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:54,485 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:54,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:54,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:54,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183015632] [2025-01-09 16:40:54,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183015632] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:54,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280490112] [2025-01-09 16:40:54,687 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:40:54,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:54,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:54,689 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:54,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 16:40:54,713 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:54,737 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:54,737 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:40:54,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:54,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:54,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:54,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280490112] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:55,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:55,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2025-01-09 16:40:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059813911] [2025-01-09 16:40:55,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:55,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 16:40:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:55,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 16:40:55,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2025-01-09 16:40:55,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:55,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 196 transitions, 2049 flow. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:55,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:55,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:55,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:56,095 INFO L124 PetriNetUnfolderBase]: 398/763 cut-off events. [2025-01-09 16:40:56,095 INFO L125 PetriNetUnfolderBase]: For 5593/5593 co-relation queries the response was YES. [2025-01-09 16:40:56,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 763 events. 398/763 cut-off events. For 5593/5593 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3929 event pairs, 37 based on Foata normal form. 3/754 useless extension candidates. Maximal degree in co-relation 4465. Up to 664 conditions per place. [2025-01-09 16:40:56,101 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 178 selfloop transitions, 42 changer transitions 7/228 dead transitions. [2025-01-09 16:40:56,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 228 transitions, 2687 flow [2025-01-09 16:40:56,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:40:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:40:56,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 131 transitions. [2025-01-09 16:40:56,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.404320987654321 [2025-01-09 16:40:56,102 INFO L175 Difference]: Start difference. First operand has 178 places, 196 transitions, 2049 flow. Second operand 18 states and 131 transitions. [2025-01-09 16:40:56,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 228 transitions, 2687 flow [2025-01-09 16:40:56,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 228 transitions, 2554 flow, removed 47 selfloop flow, removed 10 redundant places. [2025-01-09 16:40:56,123 INFO L231 Difference]: Finished difference. Result has 189 places, 200 transitions, 2105 flow [2025-01-09 16:40:56,123 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2105, PETRI_PLACES=189, PETRI_TRANSITIONS=200} [2025-01-09 16:40:56,124 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 169 predicate places. [2025-01-09 16:40:56,124 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 200 transitions, 2105 flow [2025-01-09 16:40:56,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:56,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:56,124 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:56,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:56,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 16:40:56,325 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:56,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash 280668823, now seen corresponding path program 11 times [2025-01-09 16:40:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:56,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665714295] [2025-01-09 16:40:56,325 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:40:56,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:56,327 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:56,331 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:56,332 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:56,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:56,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:56,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665714295] [2025-01-09 16:40:56,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665714295] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:56,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617871679] [2025-01-09 16:40:56,610 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:40:56,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:56,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:56,612 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:56,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 16:40:56,635 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:56,665 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:56,666 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:40:56,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:56,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:56,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:56,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617871679] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:57,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:57,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2025-01-09 16:40:57,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857555174] [2025-01-09 16:40:57,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:57,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 16:40:57,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:57,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 16:40:57,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2025-01-09 16:40:57,706 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:57,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 200 transitions, 2105 flow. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:57,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:57,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:57,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:40:58,426 INFO L124 PetriNetUnfolderBase]: 424/808 cut-off events. [2025-01-09 16:40:58,426 INFO L125 PetriNetUnfolderBase]: For 6467/6467 co-relation queries the response was YES. [2025-01-09 16:40:58,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 808 events. 424/808 cut-off events. For 6467/6467 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4205 event pairs, 38 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 4898. Up to 652 conditions per place. [2025-01-09 16:40:58,433 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 179 selfloop transitions, 56 changer transitions 9/245 dead transitions. [2025-01-09 16:40:58,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 245 transitions, 2981 flow [2025-01-09 16:40:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 16:40:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-09 16:40:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 151 transitions. [2025-01-09 16:40:58,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2025-01-09 16:40:58,435 INFO L175 Difference]: Start difference. First operand has 189 places, 200 transitions, 2105 flow. Second operand 21 states and 151 transitions. [2025-01-09 16:40:58,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 245 transitions, 2981 flow [2025-01-09 16:40:58,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 245 transitions, 2870 flow, removed 31 selfloop flow, removed 12 redundant places. [2025-01-09 16:40:58,459 INFO L231 Difference]: Finished difference. Result has 201 places, 210 transitions, 2379 flow [2025-01-09 16:40:58,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2379, PETRI_PLACES=201, PETRI_TRANSITIONS=210} [2025-01-09 16:40:58,459 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 181 predicate places. [2025-01-09 16:40:58,459 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 210 transitions, 2379 flow [2025-01-09 16:40:58,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:58,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:40:58,460 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:40:58,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 16:40:58,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:58,661 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:40:58,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:40:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1531495401, now seen corresponding path program 12 times [2025-01-09 16:40:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:40:58,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830875300] [2025-01-09 16:40:58,661 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:40:58,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:40:58,663 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:58,669 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:58,669 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:40:58,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:58,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:58,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:40:58,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830875300] [2025-01-09 16:40:58,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830875300] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:40:58,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626467746] [2025-01-09 16:40:58,881 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:40:58,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:40:58,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:40:58,885 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:40:58,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 16:40:58,910 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:40:58,935 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:40:58,936 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:40:58,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:40:58,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:40:58,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:40:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:59,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:40:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:40:59,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626467746] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:40:59,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:40:59,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-01-09 16:40:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928871165] [2025-01-09 16:40:59,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:40:59,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:40:59,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:40:59,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:40:59,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:40:59,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:40:59,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 210 transitions, 2379 flow. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:40:59,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:40:59,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:40:59,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:01,370 INFO L124 PetriNetUnfolderBase]: 457/867 cut-off events. [2025-01-09 16:41:01,371 INFO L125 PetriNetUnfolderBase]: For 9823/9823 co-relation queries the response was YES. [2025-01-09 16:41:01,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5810 conditions, 867 events. 457/867 cut-off events. For 9823/9823 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4584 event pairs, 43 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 5691. Up to 715 conditions per place. [2025-01-09 16:41:01,378 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 193 selfloop transitions, 58 changer transitions 8/260 dead transitions. [2025-01-09 16:41:01,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 260 transitions, 3492 flow [2025-01-09 16:41:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 16:41:01,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2025-01-09 16:41:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 146 transitions. [2025-01-09 16:41:01,379 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2025-01-09 16:41:01,379 INFO L175 Difference]: Start difference. First operand has 201 places, 210 transitions, 2379 flow. Second operand 20 states and 146 transitions. [2025-01-09 16:41:01,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 260 transitions, 3492 flow [2025-01-09 16:41:01,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 260 transitions, 3261 flow, removed 77 selfloop flow, removed 19 redundant places. [2025-01-09 16:41:01,408 INFO L231 Difference]: Finished difference. Result has 202 places, 226 transitions, 2689 flow [2025-01-09 16:41:01,408 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2689, PETRI_PLACES=202, PETRI_TRANSITIONS=226} [2025-01-09 16:41:01,408 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 182 predicate places. [2025-01-09 16:41:01,408 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 226 transitions, 2689 flow [2025-01-09 16:41:01,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:01,408 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:01,409 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:01,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 16:41:01,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:01,610 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:01,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1448378511, now seen corresponding path program 13 times [2025-01-09 16:41:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:01,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106088743] [2025-01-09 16:41:01,610 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:41:01,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:01,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:41:01,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:01,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:01,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:01,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:01,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106088743] [2025-01-09 16:41:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106088743] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592656527] [2025-01-09 16:41:01,812 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:41:01,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:01,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:01,814 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:01,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 16:41:01,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 16:41:01,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:01,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:01,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:01,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:41:01,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:01,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:02,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592656527] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:02,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:02,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-01-09 16:41:02,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142906444] [2025-01-09 16:41:02,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:02,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:41:02,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:02,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:41:02,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:41:02,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:41:02,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 226 transitions, 2689 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:02,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:02,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:41:02,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:03,039 INFO L124 PetriNetUnfolderBase]: 455/861 cut-off events. [2025-01-09 16:41:03,039 INFO L125 PetriNetUnfolderBase]: For 9663/9663 co-relation queries the response was YES. [2025-01-09 16:41:03,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 861 events. 455/861 cut-off events. For 9663/9663 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4547 event pairs, 44 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 5639. Up to 717 conditions per place. [2025-01-09 16:41:03,046 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 192 selfloop transitions, 57 changer transitions 7/257 dead transitions. [2025-01-09 16:41:03,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 257 transitions, 3428 flow [2025-01-09 16:41:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 16:41:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-09 16:41:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 136 transitions. [2025-01-09 16:41:03,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2025-01-09 16:41:03,047 INFO L175 Difference]: Start difference. First operand has 202 places, 226 transitions, 2689 flow. Second operand 18 states and 136 transitions. [2025-01-09 16:41:03,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 257 transitions, 3428 flow [2025-01-09 16:41:03,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 257 transitions, 3077 flow, removed 149 selfloop flow, removed 10 redundant places. [2025-01-09 16:41:03,078 INFO L231 Difference]: Finished difference. Result has 209 places, 228 transitions, 2587 flow [2025-01-09 16:41:03,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2587, PETRI_PLACES=209, PETRI_TRANSITIONS=228} [2025-01-09 16:41:03,078 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 189 predicate places. [2025-01-09 16:41:03,078 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 228 transitions, 2587 flow [2025-01-09 16:41:03,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:03,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:03,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:03,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 16:41:03,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:03,279 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:03,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash 652528279, now seen corresponding path program 14 times [2025-01-09 16:41:03,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:03,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746470499] [2025-01-09 16:41:03,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:41:03,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:03,283 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:03,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:03,292 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:03,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:03,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:03,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746470499] [2025-01-09 16:41:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746470499] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:03,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703258590] [2025-01-09 16:41:03,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:41:03,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:03,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:03,470 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:03,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 16:41:03,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:03,534 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:03,534 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:03,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:03,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:41:03,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:03,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:03,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703258590] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:03,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:03,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2025-01-09 16:41:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768794216] [2025-01-09 16:41:03,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:03,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 16:41:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:03,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 16:41:03,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2025-01-09 16:41:03,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:41:03,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 228 transitions, 2587 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:03,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:03,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:41:03,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:04,511 INFO L124 PetriNetUnfolderBase]: 501/956 cut-off events. [2025-01-09 16:41:04,512 INFO L125 PetriNetUnfolderBase]: For 12410/12410 co-relation queries the response was YES. [2025-01-09 16:41:04,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6243 conditions, 956 events. 501/956 cut-off events. For 12410/12410 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5280 event pairs, 35 based on Foata normal form. 3/947 useless extension candidates. Maximal degree in co-relation 6122. Up to 735 conditions per place. [2025-01-09 16:41:04,520 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 212 selfloop transitions, 71 changer transitions 26/310 dead transitions. [2025-01-09 16:41:04,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 310 transitions, 3959 flow [2025-01-09 16:41:04,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 16:41:04,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-09 16:41:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 189 transitions. [2025-01-09 16:41:04,521 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42 [2025-01-09 16:41:04,521 INFO L175 Difference]: Start difference. First operand has 209 places, 228 transitions, 2587 flow. Second operand 25 states and 189 transitions. [2025-01-09 16:41:04,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 310 transitions, 3959 flow [2025-01-09 16:41:04,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 310 transitions, 3727 flow, removed 82 selfloop flow, removed 14 redundant places. [2025-01-09 16:41:04,562 INFO L231 Difference]: Finished difference. Result has 227 places, 252 transitions, 2965 flow [2025-01-09 16:41:04,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2965, PETRI_PLACES=227, PETRI_TRANSITIONS=252} [2025-01-09 16:41:04,563 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 207 predicate places. [2025-01-09 16:41:04,563 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 252 transitions, 2965 flow [2025-01-09 16:41:04,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:04,563 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:04,563 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:04,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 16:41:04,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-01-09 16:41:04,768 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:04,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1451783241, now seen corresponding path program 15 times [2025-01-09 16:41:04,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:04,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816915096] [2025-01-09 16:41:04,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:41:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:04,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:04,786 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:04,786 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:41:04,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:05,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:05,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816915096] [2025-01-09 16:41:05,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816915096] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:05,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60337794] [2025-01-09 16:41:05,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:41:05,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:05,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:05,009 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:05,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 16:41:05,037 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:05,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:05,057 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:41:05,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:05,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:41:05,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:05,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:05,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:05,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60337794] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:05,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:05,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2025-01-09 16:41:05,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340346835] [2025-01-09 16:41:05,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:05,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 16:41:05,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:05,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 16:41:05,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2025-01-09 16:41:05,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:41:05,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 252 transitions, 2965 flow. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:05,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:05,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:41:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:06,729 INFO L124 PetriNetUnfolderBase]: 534/1018 cut-off events. [2025-01-09 16:41:06,729 INFO L125 PetriNetUnfolderBase]: For 15029/15029 co-relation queries the response was YES. [2025-01-09 16:41:06,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7196 conditions, 1018 events. 534/1018 cut-off events. For 15029/15029 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5648 event pairs, 36 based on Foata normal form. 3/1007 useless extension candidates. Maximal degree in co-relation 7068. Up to 739 conditions per place. [2025-01-09 16:41:06,737 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 216 selfloop transitions, 100 changer transitions 13/330 dead transitions. [2025-01-09 16:41:06,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 330 transitions, 4623 flow [2025-01-09 16:41:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 16:41:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-01-09 16:41:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 217 transitions. [2025-01-09 16:41:06,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4157088122605364 [2025-01-09 16:41:06,738 INFO L175 Difference]: Start difference. First operand has 227 places, 252 transitions, 2965 flow. Second operand 29 states and 217 transitions. [2025-01-09 16:41:06,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 330 transitions, 4623 flow [2025-01-09 16:41:06,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 330 transitions, 4260 flow, removed 158 selfloop flow, removed 13 redundant places. [2025-01-09 16:41:06,784 INFO L231 Difference]: Finished difference. Result has 244 places, 275 transitions, 3520 flow [2025-01-09 16:41:06,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3520, PETRI_PLACES=244, PETRI_TRANSITIONS=275} [2025-01-09 16:41:06,784 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 224 predicate places. [2025-01-09 16:41:06,785 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 275 transitions, 3520 flow [2025-01-09 16:41:06,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:06,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:06,785 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:06,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-09 16:41:06,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-09 16:41:06,986 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:06,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:06,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1987119609, now seen corresponding path program 16 times [2025-01-09 16:41:06,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:06,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482585121] [2025-01-09 16:41:06,986 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:41:06,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:06,988 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:06,991 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:06,991 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:41:06,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:07,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:07,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482585121] [2025-01-09 16:41:07,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482585121] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:07,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682615530] [2025-01-09 16:41:07,194 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:41:07,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:07,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:07,197 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:07,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 16:41:07,218 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:07,233 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:07,233 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:41:07,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:07,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:41:07,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:07,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:08,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682615530] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:08,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:08,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2025-01-09 16:41:08,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510356125] [2025-01-09 16:41:08,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:08,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 16:41:08,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:08,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 16:41:08,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2025-01-09 16:41:08,141 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:41:08,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 275 transitions, 3520 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:08,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:08,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:41:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:08,806 INFO L124 PetriNetUnfolderBase]: 534/1024 cut-off events. [2025-01-09 16:41:08,806 INFO L125 PetriNetUnfolderBase]: For 13435/13435 co-relation queries the response was YES. [2025-01-09 16:41:08,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7214 conditions, 1024 events. 534/1024 cut-off events. For 13435/13435 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5697 event pairs, 46 based on Foata normal form. 3/1011 useless extension candidates. Maximal degree in co-relation 7084. Up to 927 conditions per place. [2025-01-09 16:41:08,813 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 256 selfloop transitions, 39 changer transitions 7/303 dead transitions. [2025-01-09 16:41:08,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 303 transitions, 4309 flow [2025-01-09 16:41:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 16:41:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-01-09 16:41:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 116 transitions. [2025-01-09 16:41:08,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2025-01-09 16:41:08,814 INFO L175 Difference]: Start difference. First operand has 244 places, 275 transitions, 3520 flow. Second operand 16 states and 116 transitions. [2025-01-09 16:41:08,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 303 transitions, 4309 flow [2025-01-09 16:41:08,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 303 transitions, 3765 flow, removed 239 selfloop flow, removed 12 redundant places. [2025-01-09 16:41:08,876 INFO L231 Difference]: Finished difference. Result has 248 places, 278 transitions, 3147 flow [2025-01-09 16:41:08,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3147, PETRI_PLACES=248, PETRI_TRANSITIONS=278} [2025-01-09 16:41:08,877 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 228 predicate places. [2025-01-09 16:41:08,877 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 278 transitions, 3147 flow [2025-01-09 16:41:08,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:08,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:08,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:08,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-01-09 16:41:09,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-09 16:41:09,078 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:09,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1530431481, now seen corresponding path program 17 times [2025-01-09 16:41:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267620095] [2025-01-09 16:41:09,079 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:41:09,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:09,081 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:09,087 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:09,087 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:09,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267620095] [2025-01-09 16:41:09,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267620095] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362080432] [2025-01-09 16:41:09,303 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:41:09,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:09,305 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:09,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 16:41:09,328 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:09,342 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:09,343 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:09,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:09,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:41:09,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:09,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362080432] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:09,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2025-01-09 16:41:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744339363] [2025-01-09 16:41:09,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:09,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 16:41:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:09,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 16:41:09,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2025-01-09 16:41:09,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:41:09,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 278 transitions, 3147 flow. Second operand has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:09,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:09,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:41:09,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:10,639 INFO L124 PetriNetUnfolderBase]: 534/1024 cut-off events. [2025-01-09 16:41:10,639 INFO L125 PetriNetUnfolderBase]: For 10372/10372 co-relation queries the response was YES. [2025-01-09 16:41:10,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6614 conditions, 1024 events. 534/1024 cut-off events. For 10372/10372 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5715 event pairs, 39 based on Foata normal form. 3/1009 useless extension candidates. Maximal degree in co-relation 6527. Up to 752 conditions per place. [2025-01-09 16:41:10,651 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 217 selfloop transitions, 100 changer transitions 12/330 dead transitions. [2025-01-09 16:41:10,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 330 transitions, 4126 flow [2025-01-09 16:41:10,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 16:41:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-09 16:41:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 196 transitions. [2025-01-09 16:41:10,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43555555555555553 [2025-01-09 16:41:10,659 INFO L175 Difference]: Start difference. First operand has 248 places, 278 transitions, 3147 flow. Second operand 25 states and 196 transitions. [2025-01-09 16:41:10,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 330 transitions, 4126 flow [2025-01-09 16:41:10,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 330 transitions, 3999 flow, removed 34 selfloop flow, removed 12 redundant places. [2025-01-09 16:41:10,704 INFO L231 Difference]: Finished difference. Result has 261 places, 282 transitions, 3388 flow [2025-01-09 16:41:10,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3388, PETRI_PLACES=261, PETRI_TRANSITIONS=282} [2025-01-09 16:41:10,704 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 241 predicate places. [2025-01-09 16:41:10,705 INFO L471 AbstractCegarLoop]: Abstraction has has 261 places, 282 transitions, 3388 flow [2025-01-09 16:41:10,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:10,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:10,705 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:10,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-09 16:41:10,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-09 16:41:10,909 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:10,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash 202020583, now seen corresponding path program 18 times [2025-01-09 16:41:10,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:10,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727773614] [2025-01-09 16:41:10,910 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:41:10,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:10,912 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:10,916 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:10,916 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:41:10,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:11,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727773614] [2025-01-09 16:41:11,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727773614] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31643099] [2025-01-09 16:41:11,155 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:41:11,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:11,157 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:11,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-09 16:41:11,193 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 15 statements into 2 equivalence classes. [2025-01-09 16:41:11,321 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 16:41:11,321 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:41:11,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:11,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 16:41:11,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:11,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:12,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31643099] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:12,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:12,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2025-01-09 16:41:12,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964944970] [2025-01-09 16:41:12,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:12,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 16:41:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:12,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 16:41:12,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2025-01-09 16:41:12,353 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:41:12,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 282 transitions, 3388 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:12,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:12,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:41:12,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:12,883 INFO L124 PetriNetUnfolderBase]: 532/1021 cut-off events. [2025-01-09 16:41:12,883 INFO L125 PetriNetUnfolderBase]: For 10570/10570 co-relation queries the response was YES. [2025-01-09 16:41:12,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 1021 events. 532/1021 cut-off events. For 10570/10570 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5692 event pairs, 39 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 6697. Up to 865 conditions per place. [2025-01-09 16:41:12,899 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 252 selfloop transitions, 56 changer transitions 8/317 dead transitions. [2025-01-09 16:41:12,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 317 transitions, 4225 flow [2025-01-09 16:41:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 16:41:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-09 16:41:12,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 136 transitions. [2025-01-09 16:41:12,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-01-09 16:41:12,904 INFO L175 Difference]: Start difference. First operand has 261 places, 282 transitions, 3388 flow. Second operand 17 states and 136 transitions. [2025-01-09 16:41:12,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 317 transitions, 4225 flow [2025-01-09 16:41:12,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 317 transitions, 3926 flow, removed 92 selfloop flow, removed 19 redundant places. [2025-01-09 16:41:12,955 INFO L231 Difference]: Finished difference. Result has 258 places, 285 transitions, 3310 flow [2025-01-09 16:41:12,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3089, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3310, PETRI_PLACES=258, PETRI_TRANSITIONS=285} [2025-01-09 16:41:12,956 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 238 predicate places. [2025-01-09 16:41:12,956 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 285 transitions, 3310 flow [2025-01-09 16:41:12,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:12,956 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:12,957 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:12,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-09 16:41:13,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-09 16:41:13,161 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:13,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1123156186, now seen corresponding path program 19 times [2025-01-09 16:41:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:13,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443767212] [2025-01-09 16:41:13,161 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:41:13,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:13,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 16:41:13,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:41:13,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:13,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:13,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:13,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:13,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443767212] [2025-01-09 16:41:13,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443767212] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:13,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571277271] [2025-01-09 16:41:13,455 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 16:41:13,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:13,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:13,457 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:13,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-09 16:41:13,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 16:41:13,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:41:13,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:41:13,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:13,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 16:41:13,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:13,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:15,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571277271] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:15,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:15,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2025-01-09 16:41:15,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620236179] [2025-01-09 16:41:15,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:15,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 16:41:15,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:15,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 16:41:15,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2025-01-09 16:41:15,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:41:15,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 285 transitions, 3310 flow. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:15,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:15,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:41:15,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:19,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:21,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:25,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:28,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:32,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:35,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:40,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:44,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:46,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:50,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:54,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-01-09 16:41:54,729 INFO L124 PetriNetUnfolderBase]: 635/1209 cut-off events. [2025-01-09 16:41:54,729 INFO L125 PetriNetUnfolderBase]: For 16337/16337 co-relation queries the response was YES. [2025-01-09 16:41:54,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8593 conditions, 1209 events. 635/1209 cut-off events. For 16337/16337 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6970 event pairs, 27 based on Foata normal form. 4/1191 useless extension candidates. Maximal degree in co-relation 8505. Up to 816 conditions per place. [2025-01-09 16:41:54,736 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 266 selfloop transitions, 109 changer transitions 22/398 dead transitions. [2025-01-09 16:41:54,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 398 transitions, 5341 flow [2025-01-09 16:41:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-09 16:41:54,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-01-09 16:41:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 261 transitions. [2025-01-09 16:41:54,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-01-09 16:41:54,737 INFO L175 Difference]: Start difference. First operand has 258 places, 285 transitions, 3310 flow. Second operand 33 states and 261 transitions. [2025-01-09 16:41:54,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 398 transitions, 5341 flow [2025-01-09 16:41:54,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 398 transitions, 5214 flow, removed 42 selfloop flow, removed 12 redundant places. [2025-01-09 16:41:54,794 INFO L231 Difference]: Finished difference. Result has 288 places, 321 transitions, 4229 flow [2025-01-09 16:41:54,794 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4229, PETRI_PLACES=288, PETRI_TRANSITIONS=321} [2025-01-09 16:41:54,794 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 268 predicate places. [2025-01-09 16:41:54,794 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 321 transitions, 4229 flow [2025-01-09 16:41:54,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:54,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:54,795 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:54,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-01-09 16:41:54,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-09 16:41:54,999 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:54,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:54,999 INFO L85 PathProgramCache]: Analyzing trace with hash -768660513, now seen corresponding path program 5 times [2025-01-09 16:41:54,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:54,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547256682] [2025-01-09 16:41:54,999 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:41:54,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:55,004 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:41:55,009 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:41:55,009 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:55,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:41:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547256682] [2025-01-09 16:41:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547256682] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:41:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725113416] [2025-01-09 16:41:55,123 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:41:55,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:41:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:41:55,129 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 16:41:55,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-09 16:41:55,154 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:41:55,168 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:41:55,168 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:41:55,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:41:55,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 16:41:55,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:41:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:55,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:41:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:41:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725113416] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:41:55,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:41:55,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2025-01-09 16:41:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31280361] [2025-01-09 16:41:55,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:41:55,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 16:41:55,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:41:55,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 16:41:55,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2025-01-09 16:41:55,810 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2025-01-09 16:41:55,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 321 transitions, 4229 flow. Second operand has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:55,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:41:55,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2025-01-09 16:41:55,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:41:56,576 INFO L124 PetriNetUnfolderBase]: 717/1340 cut-off events. [2025-01-09 16:41:56,576 INFO L125 PetriNetUnfolderBase]: For 20604/20604 co-relation queries the response was YES. [2025-01-09 16:41:56,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10184 conditions, 1340 events. 717/1340 cut-off events. For 20604/20604 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7817 event pairs, 9 based on Foata normal form. 3/1319 useless extension candidates. Maximal degree in co-relation 10082. Up to 496 conditions per place. [2025-01-09 16:41:56,588 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 182 selfloop transitions, 239 changer transitions 12/434 dead transitions. [2025-01-09 16:41:56,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 434 transitions, 6425 flow [2025-01-09 16:41:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-09 16:41:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2025-01-09 16:41:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 225 transitions. [2025-01-09 16:41:56,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2025-01-09 16:41:56,589 INFO L175 Difference]: Start difference. First operand has 288 places, 321 transitions, 4229 flow. Second operand 29 states and 225 transitions. [2025-01-09 16:41:56,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 434 transitions, 6425 flow [2025-01-09 16:41:56,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 434 transitions, 5775 flow, removed 301 selfloop flow, removed 13 redundant places. [2025-01-09 16:41:56,673 INFO L231 Difference]: Finished difference. Result has 304 places, 363 transitions, 5267 flow [2025-01-09 16:41:56,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3655, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5267, PETRI_PLACES=304, PETRI_TRANSITIONS=363} [2025-01-09 16:41:56,674 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 284 predicate places. [2025-01-09 16:41:56,674 INFO L471 AbstractCegarLoop]: Abstraction has has 304 places, 363 transitions, 5267 flow [2025-01-09 16:41:56,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:41:56,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:41:56,674 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:41:56,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-09 16:41:56,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-09 16:41:56,876 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-01-09 16:41:56,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:41:56,876 INFO L85 PathProgramCache]: Analyzing trace with hash 720744483, now seen corresponding path program 6 times [2025-01-09 16:41:56,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:41:56,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652085156] [2025-01-09 16:41:56,876 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:41:56,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:41:56,879 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:41:56,884 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:41:56,887 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-09 16:41:56,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat