./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-100.i --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/pthread-theta/unwind2-100.i -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 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 16:51:55,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 16:51:55,865 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 16:51:55,871 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 16:51:55,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 16:51:55,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 16:51:55,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 16:51:55,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 16:51:55,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 16:51:55,892 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 16:51:55,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 16:51:55,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 16:51:55,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 16:51:55,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 16:51:55,892 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 16:51:55,892 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 16:51:55,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 16:51:55,893 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 16:51:55,894 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:51:55,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:51:55,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 16:51:55,894 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 16:51:55,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 16:51:55,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 16:51:55,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 16:51:55,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 16:51:55,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 16:51:55,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 16:51:55,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 16:51:55,895 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 -> 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 [2025-01-09 16:51:56,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 16:51:56,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 16:51:56,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 16:51:56,106 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 16:51:56,106 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 16:51:56,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-100.i [2025-01-09 16:51:57,239 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/766825eae/69b4ea5f8feb429cb2ca92a7d8e59255/FLAG856ece223 [2025-01-09 16:51:57,512 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 16:51:57,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i [2025-01-09 16:51:57,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/766825eae/69b4ea5f8feb429cb2ca92a7d8e59255/FLAG856ece223 [2025-01-09 16:51:57,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/766825eae/69b4ea5f8feb429cb2ca92a7d8e59255 [2025-01-09 16:51:57,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 16:51:57,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 16:51:57,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 16:51:57,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 16:51:57,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 16:51:57,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a9f603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57, skipping insertion in model container [2025-01-09 16:51:57,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,581 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 16:51:57,768 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/pthread-theta/unwind2-100.i[33026,33039] [2025-01-09 16:51:57,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:51:57,782 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 16:51:57,810 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/pthread-theta/unwind2-100.i[33026,33039] [2025-01-09 16:51:57,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 16:51:57,843 INFO L204 MainTranslator]: Completed translation [2025-01-09 16:51:57,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57 WrapperNode [2025-01-09 16:51:57,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 16:51:57,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 16:51:57,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 16:51:57,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 16:51:57,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,870 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2025-01-09 16:51:57,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 16:51:57,876 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 16:51:57,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 16:51:57,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 16:51:57,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,883 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,891 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 16:51:57,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,892 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,894 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 16:51:57,901 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 16:51:57,901 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 16:51:57,901 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 16:51:57,901 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (1/1) ... [2025-01-09 16:51:57,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 16:51:57,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:51:57,926 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 16:51:57,933 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 16:51:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 16:51:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-01-09 16:51:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-01-09 16:51:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-01-09 16:51:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-01-09 16:51:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 16:51:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 16:51:57,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 16:51:57,956 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 16:51:58,045 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 16:51:58,047 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 16:51:58,158 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 16:51:58,159 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 16:51:58,251 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 16:51:58,252 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 16:51:58,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:51:58 BoogieIcfgContainer [2025-01-09 16:51:58,252 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 16:51:58,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 16:51:58,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 16:51:58,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 16:51:58,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 04:51:57" (1/3) ... [2025-01-09 16:51:58,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9629763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:51:58, skipping insertion in model container [2025-01-09 16:51:58,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 04:51:57" (2/3) ... [2025-01-09 16:51:58,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9629763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 04:51:58, skipping insertion in model container [2025-01-09 16:51:58,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 04:51:58" (3/3) ... [2025-01-09 16:51:58,259 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-100.i [2025-01-09 16:51:58,268 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 16:51:58,270 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-100.i that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-01-09 16:51:58,270 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 16:51:58,316 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-09 16:51:58,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2025-01-09 16:51:58,366 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-01-09 16:51:58,367 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 16:51:58,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-01-09 16:51:58,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2025-01-09 16:51:58,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 61 flow [2025-01-09 16:51:58,379 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 16:51:58,391 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;@265148b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 16:51:58,391 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-09 16:51:58,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 16:51:58,399 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2025-01-09 16:51:58,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 16:51:58,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:51:58,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:51:58,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:51:58,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:51:58,405 INFO L85 PathProgramCache]: Analyzing trace with hash -227782971, now seen corresponding path program 1 times [2025-01-09 16:51:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:51:58,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338247856] [2025-01-09 16:51:58,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:51:58,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:51:58,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-09 16:51:58,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-09 16:51:58,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:51:58,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:51:58,683 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 16:51:58,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:51:58,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338247856] [2025-01-09 16:51:58,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338247856] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:51:58,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:51:58,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:51:58,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328025198] [2025-01-09 16:51:58,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:51:58,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:51:58,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:51:58,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:51:58,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:51:58,743 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:51:58,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 61 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 16:51:58,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:51:58,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:51:58,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:51:59,003 INFO L124 PetriNetUnfolderBase]: 211/450 cut-off events. [2025-01-09 16:51:59,003 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-01-09 16:51:59,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 450 events. 211/450 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2193 event pairs, 26 based on Foata normal form. 48/420 useless extension candidates. Maximal degree in co-relation 780. Up to 153 conditions per place. [2025-01-09 16:51:59,007 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2025-01-09 16:51:59,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 63 transitions, 261 flow [2025-01-09 16:51:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:51:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:51:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2025-01-09 16:51:59,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2025-01-09 16:51:59,016 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 61 flow. Second operand 7 states and 122 transitions. [2025-01-09 16:51:59,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 63 transitions, 261 flow [2025-01-09 16:51:59,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 63 transitions, 251 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-01-09 16:51:59,025 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 101 flow [2025-01-09 16:51:59,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2025-01-09 16:51:59,032 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2025-01-09 16:51:59,035 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 101 flow [2025-01-09 16:51:59,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 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 16:51:59,036 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:51:59,036 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:51:59,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 16:51:59,036 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:51:59,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:51:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1528631884, now seen corresponding path program 1 times [2025-01-09 16:51:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:51:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799016992] [2025-01-09 16:51:59,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:51:59,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:51:59,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 16:51:59,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 16:51:59,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:51:59,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:51:59,136 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 16:51:59,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:51:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799016992] [2025-01-09 16:51:59,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799016992] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:51:59,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511265271] [2025-01-09 16:51:59,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:51:59,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:51:59,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:51:59,139 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 16:51:59,140 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 16:51:59,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 16:51:59,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 16:51:59,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:51:59,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:51:59,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:51:59,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:51:59,231 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 16:51:59,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:51:59,279 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 16:51:59,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511265271] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:51:59,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:51:59,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-01-09 16:51:59,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954151946] [2025-01-09 16:51:59,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:51:59,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:51:59,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:51:59,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:51:59,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:51:59,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:51:59,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 101 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 16:51:59,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:51:59,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:51:59,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:51:59,600 INFO L124 PetriNetUnfolderBase]: 307/630 cut-off events. [2025-01-09 16:51:59,600 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2025-01-09 16:51:59,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 630 events. 307/630 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3127 event pairs, 26 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 1400. Up to 153 conditions per place. [2025-01-09 16:51:59,604 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 88 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2025-01-09 16:51:59,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 111 transitions, 533 flow [2025-01-09 16:51:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 16:51:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-09 16:51:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2025-01-09 16:51:59,606 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2025-01-09 16:51:59,606 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 101 flow. Second operand 13 states and 215 transitions. [2025-01-09 16:51:59,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 111 transitions, 533 flow [2025-01-09 16:51:59,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 519 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-09 16:51:59,610 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 212 flow [2025-01-09 16:51:59,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=212, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2025-01-09 16:51:59,611 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2025-01-09 16:51:59,611 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 212 flow [2025-01-09 16:51:59,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 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 16:51:59,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:51:59,611 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:51:59,619 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 16:51:59,812 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 16:51:59,812 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:51:59,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:51:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash -792988933, now seen corresponding path program 1 times [2025-01-09 16:51:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:51:59,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421108893] [2025-01-09 16:51:59,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:51:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:51:59,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 16:51:59,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 16:51:59,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:51:59,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:51:59,910 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 16:51:59,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:51:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421108893] [2025-01-09 16:51:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421108893] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:51:59,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:51:59,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:51:59,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941701867] [2025-01-09 16:51:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:51:59,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:51:59,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:51:59,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:51:59,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:51:59,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:51:59,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 16:51:59,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:51:59,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:51:59,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:00,061 INFO L124 PetriNetUnfolderBase]: 363/760 cut-off events. [2025-01-09 16:52:00,061 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2025-01-09 16:52:00,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 760 events. 363/760 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3939 event pairs, 86 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1460. Up to 245 conditions per place. [2025-01-09 16:52:00,067 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 66 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2025-01-09 16:52:00,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 662 flow [2025-01-09 16:52:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 16:52:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-09 16:52:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2025-01-09 16:52:00,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-01-09 16:52:00,070 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 212 flow. Second operand 7 states and 112 transitions. [2025-01-09 16:52:00,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 662 flow [2025-01-09 16:52:00,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 85 transitions, 542 flow, removed 45 selfloop flow, removed 5 redundant places. [2025-01-09 16:52:00,080 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 231 flow [2025-01-09 16:52:00,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-01-09 16:52:00,081 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2025-01-09 16:52:00,081 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 231 flow [2025-01-09 16:52:00,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 16:52:00,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:00,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:00,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 16:52:00,083 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:00,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1187116256, now seen corresponding path program 1 times [2025-01-09 16:52:00,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:00,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975468440] [2025-01-09 16:52:00,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:52:00,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:00,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 16:52:00,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 16:52:00,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:52:00,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:00,183 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 16:52:00,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:00,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975468440] [2025-01-09 16:52:00,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975468440] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258002155] [2025-01-09 16:52:00,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:52:00,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:00,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:00,187 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 16:52:00,188 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 16:52:00,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-09 16:52:00,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 16:52:00,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:52:00,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:00,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:52:00,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:00,262 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 16:52:00,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:00,304 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 16:52:00,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258002155] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:00,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:00,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-01-09 16:52:00,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827030066] [2025-01-09 16:52:00,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:00,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:52:00,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:00,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:52:00,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:52:00,308 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:00,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 231 flow. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 16:52:00,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:00,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:00,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:00,568 INFO L124 PetriNetUnfolderBase]: 531/1054 cut-off events. [2025-01-09 16:52:00,568 INFO L125 PetriNetUnfolderBase]: For 1914/1914 co-relation queries the response was YES. [2025-01-09 16:52:00,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 1054 events. 531/1054 cut-off events. For 1914/1914 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5598 event pairs, 93 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2981. Up to 245 conditions per place. [2025-01-09 16:52:00,574 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 129 selfloop transitions, 22 changer transitions 0/157 dead transitions. [2025-01-09 16:52:00,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 1142 flow [2025-01-09 16:52:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 16:52:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-01-09 16:52:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2025-01-09 16:52:00,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5435897435897435 [2025-01-09 16:52:00,576 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 231 flow. Second operand 13 states and 212 transitions. [2025-01-09 16:52:00,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 1142 flow [2025-01-09 16:52:00,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 157 transitions, 1123 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-01-09 16:52:00,584 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 356 flow [2025-01-09 16:52:00,584 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2025-01-09 16:52:00,584 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2025-01-09 16:52:00,584 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 356 flow [2025-01-09 16:52:00,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 16:52:00,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:00,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:00,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 16:52:00,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:00,786 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:00,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -905794958, now seen corresponding path program 1 times [2025-01-09 16:52:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:00,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035835029] [2025-01-09 16:52:00,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:52:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:00,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:52:00,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:52:00,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:52:00,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:00,853 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 16:52:00,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:00,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035835029] [2025-01-09 16:52:00,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035835029] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:52:00,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:52:00,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:52:00,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181878825] [2025-01-09 16:52:00,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:52:00,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:52:00,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:00,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:52:00,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:52:00,858 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:00,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 16:52:00,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:00,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:00,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:01,011 INFO L124 PetriNetUnfolderBase]: 555/1112 cut-off events. [2025-01-09 16:52:01,012 INFO L125 PetriNetUnfolderBase]: For 3869/3869 co-relation queries the response was YES. [2025-01-09 16:52:01,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4047 conditions, 1112 events. 555/1112 cut-off events. For 3869/3869 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6016 event pairs, 121 based on Foata normal form. 16/1066 useless extension candidates. Maximal degree in co-relation 3680. Up to 421 conditions per place. [2025-01-09 16:52:01,019 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 62 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2025-01-09 16:52:01,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 707 flow [2025-01-09 16:52:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:52:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:52:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2025-01-09 16:52:01,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2025-01-09 16:52:01,020 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 356 flow. Second operand 6 states and 93 transitions. [2025-01-09 16:52:01,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 707 flow [2025-01-09 16:52:01,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 629 flow, removed 27 selfloop flow, removed 5 redundant places. [2025-01-09 16:52:01,033 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 344 flow [2025-01-09 16:52:01,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2025-01-09 16:52:01,033 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2025-01-09 16:52:01,033 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 344 flow [2025-01-09 16:52:01,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 16:52:01,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:01,034 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:01,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 16:52:01,034 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:01,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:01,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1488494640, now seen corresponding path program 1 times [2025-01-09 16:52:01,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:01,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696577404] [2025-01-09 16:52:01,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:52:01,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:01,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 16:52:01,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:52:01,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:52:01,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:01,087 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 16:52:01,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:01,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696577404] [2025-01-09 16:52:01,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696577404] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:52:01,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 16:52:01,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 16:52:01,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289387689] [2025-01-09 16:52:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:52:01,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:52:01,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:01,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:52:01,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 16:52:01,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:01,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 16:52:01,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:01,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:01,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:01,250 INFO L124 PetriNetUnfolderBase]: 580/1166 cut-off events. [2025-01-09 16:52:01,252 INFO L125 PetriNetUnfolderBase]: For 4146/4146 co-relation queries the response was YES. [2025-01-09 16:52:01,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3962 conditions, 1166 events. 580/1166 cut-off events. For 4146/4146 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6412 event pairs, 117 based on Foata normal form. 17/1117 useless extension candidates. Maximal degree in co-relation 3784. Up to 457 conditions per place. [2025-01-09 16:52:01,259 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 67 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2025-01-09 16:52:01,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 705 flow [2025-01-09 16:52:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 16:52:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-09 16:52:01,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2025-01-09 16:52:01,261 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2025-01-09 16:52:01,261 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 344 flow. Second operand 6 states and 97 transitions. [2025-01-09 16:52:01,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 705 flow [2025-01-09 16:52:01,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 675 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-01-09 16:52:01,270 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 363 flow [2025-01-09 16:52:01,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2025-01-09 16:52:01,270 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2025-01-09 16:52:01,270 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 363 flow [2025-01-09 16:52:01,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 16:52:01,271 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:01,271 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:01,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 16:52:01,271 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:01,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash -96175995, now seen corresponding path program 2 times [2025-01-09 16:52:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:01,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171546118] [2025-01-09 16:52:01,272 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:52:01,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:01,276 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-01-09 16:52:01,280 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:52:01,280 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:52:01,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:01,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171546118] [2025-01-09 16:52:01,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171546118] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:01,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133162917] [2025-01-09 16:52:01,363 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:52:01,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:01,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:01,369 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 16:52:01,375 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 16:52:01,408 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-01-09 16:52:01,416 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 16:52:01,417 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:52:01,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:01,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:52:01,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:01,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133162917] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:01,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:01,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-01-09 16:52:01,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330626886] [2025-01-09 16:52:01,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:01,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 16:52:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:01,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 16:52:01,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-01-09 16:52:01,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:01,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 363 flow. Second operand has 23 states, 23 states have (on average 9.130434782608695) internal successors, (210), 23 states have internal predecessors, (210), 0 states have call successors, (0), 0 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 16:52:01,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:01,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:01,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:02,190 INFO L124 PetriNetUnfolderBase]: 934/1778 cut-off events. [2025-01-09 16:52:02,190 INFO L125 PetriNetUnfolderBase]: For 14072/14072 co-relation queries the response was YES. [2025-01-09 16:52:02,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 1778 events. 934/1778 cut-off events. For 14072/14072 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9528 event pairs, 93 based on Foata normal form. 240/1948 useless extension candidates. Maximal degree in co-relation 6346. Up to 351 conditions per place. [2025-01-09 16:52:02,201 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 270 selfloop transitions, 40 changer transitions 0/316 dead transitions. [2025-01-09 16:52:02,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 316 transitions, 2588 flow [2025-01-09 16:52:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 16:52:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-09 16:52:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 413 transitions. [2025-01-09 16:52:02,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506666666666666 [2025-01-09 16:52:02,202 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 363 flow. Second operand 25 states and 413 transitions. [2025-01-09 16:52:02,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 316 transitions, 2588 flow [2025-01-09 16:52:02,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 316 transitions, 2457 flow, removed 55 selfloop flow, removed 3 redundant places. [2025-01-09 16:52:02,223 INFO L231 Difference]: Finished difference. Result has 106 places, 74 transitions, 650 flow [2025-01-09 16:52:02,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=650, PETRI_PLACES=106, PETRI_TRANSITIONS=74} [2025-01-09 16:52:02,223 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2025-01-09 16:52:02,224 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 74 transitions, 650 flow [2025-01-09 16:52:02,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.130434782608695) internal successors, (210), 23 states have internal predecessors, (210), 0 states have call successors, (0), 0 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 16:52:02,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:02,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:02,231 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 16:52:02,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:02,425 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:02,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:02,425 INFO L85 PathProgramCache]: Analyzing trace with hash -579965801, now seen corresponding path program 1 times [2025-01-09 16:52:02,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:02,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917136363] [2025-01-09 16:52:02,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:52:02,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:02,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 16:52:02,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 16:52:02,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:52:02,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:02,473 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 16:52:02,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917136363] [2025-01-09 16:52:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917136363] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145705367] [2025-01-09 16:52:02,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:52:02,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:02,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:02,477 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 16:52:02,481 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 16:52:02,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 16:52:02,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 16:52:02,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:52:02,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:02,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:52:02,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:02,549 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 16:52:02,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:02,589 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 16:52:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145705367] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:02,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-01-09 16:52:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467133007] [2025-01-09 16:52:02,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:02,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:52:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:02,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:52:02,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:52:02,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:02,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 74 transitions, 650 flow. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 16:52:02,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:02,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:02,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:02,870 INFO L124 PetriNetUnfolderBase]: 1006/1922 cut-off events. [2025-01-09 16:52:02,870 INFO L125 PetriNetUnfolderBase]: For 22258/22258 co-relation queries the response was YES. [2025-01-09 16:52:02,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8322 conditions, 1922 events. 1006/1922 cut-off events. For 22258/22258 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10659 event pairs, 202 based on Foata normal form. 48/1892 useless extension candidates. Maximal degree in co-relation 6408. Up to 746 conditions per place. [2025-01-09 16:52:02,882 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 108 selfloop transitions, 24 changer transitions 0/138 dead transitions. [2025-01-09 16:52:02,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 138 transitions, 1426 flow [2025-01-09 16:52:02,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:52:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:52:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2025-01-09 16:52:02,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5074074074074074 [2025-01-09 16:52:02,884 INFO L175 Difference]: Start difference. First operand has 106 places, 74 transitions, 650 flow. Second operand 9 states and 137 transitions. [2025-01-09 16:52:02,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 138 transitions, 1426 flow [2025-01-09 16:52:02,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 1186 flow, removed 84 selfloop flow, removed 12 redundant places. [2025-01-09 16:52:02,918 INFO L231 Difference]: Finished difference. Result has 105 places, 77 transitions, 574 flow [2025-01-09 16:52:02,918 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2025-01-09 16:52:02,919 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2025-01-09 16:52:02,919 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 574 flow [2025-01-09 16:52:02,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 16:52:02,919 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:02,919 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:02,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 16:52:03,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 16:52:03,124 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:03,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash -499162035, now seen corresponding path program 1 times [2025-01-09 16:52:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783298662] [2025-01-09 16:52:03,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:52:03,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:03,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 16:52:03,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 16:52:03,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:52:03,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:03,179 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 16:52:03,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:03,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783298662] [2025-01-09 16:52:03,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783298662] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:03,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720392720] [2025-01-09 16:52:03,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 16:52:03,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:03,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:03,181 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 16:52:03,187 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 16:52:03,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-09 16:52:03,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-09 16:52:03,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 16:52:03,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:03,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 16:52:03,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:03,257 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 16:52:03,258 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:03,297 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 16:52:03,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720392720] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:03,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:03,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-01-09 16:52:03,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975547603] [2025-01-09 16:52:03,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:03,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 16:52:03,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:03,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 16:52:03,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-01-09 16:52:03,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:03,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 574 flow. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 16:52:03,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:03,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:03,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:03,590 INFO L124 PetriNetUnfolderBase]: 1135/2126 cut-off events. [2025-01-09 16:52:03,590 INFO L125 PetriNetUnfolderBase]: For 19327/19327 co-relation queries the response was YES. [2025-01-09 16:52:03,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 2126 events. 1135/2126 cut-off events. For 19327/19327 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11819 event pairs, 114 based on Foata normal form. 87/2141 useless extension candidates. Maximal degree in co-relation 7974. Up to 819 conditions per place. [2025-01-09 16:52:03,602 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 136 selfloop transitions, 24 changer transitions 0/166 dead transitions. [2025-01-09 16:52:03,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 1535 flow [2025-01-09 16:52:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:52:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:52:03,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-01-09 16:52:03,603 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-01-09 16:52:03,603 INFO L175 Difference]: Start difference. First operand has 105 places, 77 transitions, 574 flow. Second operand 9 states and 144 transitions. [2025-01-09 16:52:03,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 1535 flow [2025-01-09 16:52:03,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 166 transitions, 1457 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-01-09 16:52:03,631 INFO L231 Difference]: Finished difference. Result has 111 places, 80 transitions, 594 flow [2025-01-09 16:52:03,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=111, PETRI_TRANSITIONS=80} [2025-01-09 16:52:03,632 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2025-01-09 16:52:03,632 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 80 transitions, 594 flow [2025-01-09 16:52:03,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 16:52:03,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:03,632 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:03,638 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 16:52:03,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:03,837 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:03,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash 589284411, now seen corresponding path program 2 times [2025-01-09 16:52:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:03,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718551382] [2025-01-09 16:52:03,838 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:52:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:03,841 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:52:03,844 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:52:03,844 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:52:03,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:03,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:03,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718551382] [2025-01-09 16:52:03,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718551382] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:03,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681587702] [2025-01-09 16:52:03,908 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:52:03,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:03,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:03,910 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 16:52:03,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 16:52:03,942 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 16:52:03,949 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 16:52:03,949 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:52:03,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:03,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:52:03,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:04,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:04,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:04,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681587702] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:04,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:04,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-01-09 16:52:04,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506696240] [2025-01-09 16:52:04,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:04,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 16:52:04,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:04,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 16:52:04,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-01-09 16:52:04,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:04,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 80 transitions, 594 flow. Second operand has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 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 16:52:04,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:04,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:04,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:04,710 INFO L124 PetriNetUnfolderBase]: 1759/3257 cut-off events. [2025-01-09 16:52:04,710 INFO L125 PetriNetUnfolderBase]: For 55632/55632 co-relation queries the response was YES. [2025-01-09 16:52:04,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13328 conditions, 3257 events. 1759/3257 cut-off events. For 55632/55632 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18823 event pairs, 279 based on Foata normal form. 420/3574 useless extension candidates. Maximal degree in co-relation 10848. Up to 697 conditions per place. [2025-01-09 16:52:04,733 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 441 selfloop transitions, 46 changer transitions 0/493 dead transitions. [2025-01-09 16:52:04,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 493 transitions, 4418 flow [2025-01-09 16:52:04,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 16:52:04,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-01-09 16:52:04,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 410 transitions. [2025-01-09 16:52:04,735 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2025-01-09 16:52:04,735 INFO L175 Difference]: Start difference. First operand has 111 places, 80 transitions, 594 flow. Second operand 25 states and 410 transitions. [2025-01-09 16:52:04,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 493 transitions, 4418 flow [2025-01-09 16:52:04,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 493 transitions, 4308 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-01-09 16:52:04,799 INFO L231 Difference]: Finished difference. Result has 142 places, 98 transitions, 858 flow [2025-01-09 16:52:04,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=858, PETRI_PLACES=142, PETRI_TRANSITIONS=98} [2025-01-09 16:52:04,800 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2025-01-09 16:52:04,800 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 98 transitions, 858 flow [2025-01-09 16:52:04,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 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 16:52:04,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:04,801 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:04,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 16:52:05,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-01-09 16:52:05,001 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:05,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:05,002 INFO L85 PathProgramCache]: Analyzing trace with hash 504562808, now seen corresponding path program 2 times [2025-01-09 16:52:05,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:05,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929127646] [2025-01-09 16:52:05,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:52:05,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:05,005 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:52:05,008 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:52:05,008 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:52:05,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:05,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:05,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929127646] [2025-01-09 16:52:05,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929127646] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:05,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475863236] [2025-01-09 16:52:05,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:52:05,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:05,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:05,084 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 16:52:05,085 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 16:52:05,125 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:52:05,133 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:52:05,133 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:52:05,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:05,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:52:05,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:05,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475863236] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:05,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-01-09 16:52:05,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765427345] [2025-01-09 16:52:05,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:05,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 16:52:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:05,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 16:52:05,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-01-09 16:52:05,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:05,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 98 transitions, 858 flow. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 16:52:05,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:05,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:05,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:05,955 INFO L124 PetriNetUnfolderBase]: 2011/3641 cut-off events. [2025-01-09 16:52:05,955 INFO L125 PetriNetUnfolderBase]: For 88256/88256 co-relation queries the response was YES. [2025-01-09 16:52:05,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17399 conditions, 3641 events. 2011/3641 cut-off events. For 88256/88256 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21125 event pairs, 234 based on Foata normal form. 168/3718 useless extension candidates. Maximal degree in co-relation 16736. Up to 1406 conditions per place. [2025-01-09 16:52:05,974 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 237 selfloop transitions, 36 changer transitions 0/279 dead transitions. [2025-01-09 16:52:05,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 279 transitions, 3392 flow [2025-01-09 16:52:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 16:52:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-09 16:52:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 224 transitions. [2025-01-09 16:52:05,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2025-01-09 16:52:05,977 INFO L175 Difference]: Start difference. First operand has 142 places, 98 transitions, 858 flow. Second operand 15 states and 224 transitions. [2025-01-09 16:52:05,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 279 transitions, 3392 flow [2025-01-09 16:52:06,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 279 transitions, 2600 flow, removed 312 selfloop flow, removed 12 redundant places. [2025-01-09 16:52:06,096 INFO L231 Difference]: Finished difference. Result has 150 places, 104 transitions, 836 flow [2025-01-09 16:52:06,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=836, PETRI_PLACES=150, PETRI_TRANSITIONS=104} [2025-01-09 16:52:06,096 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2025-01-09 16:52:06,096 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 104 transitions, 836 flow [2025-01-09 16:52:06,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 16:52:06,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:06,096 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:06,109 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 16:52:06,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:06,297 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:06,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:06,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1177633136, now seen corresponding path program 2 times [2025-01-09 16:52:06,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:06,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421110838] [2025-01-09 16:52:06,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:52:06,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:06,302 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:52:06,305 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:52:06,305 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:52:06,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:06,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:06,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421110838] [2025-01-09 16:52:06,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421110838] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:06,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3299625] [2025-01-09 16:52:06,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 16:52:06,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:06,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:06,408 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 16:52:06,411 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 16:52:06,439 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-01-09 16:52:06,447 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 16:52:06,448 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 16:52:06,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:06,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:52:06,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:06,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:06,582 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:06,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3299625] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:06,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:06,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-01-09 16:52:06,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634008108] [2025-01-09 16:52:06,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:06,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 16:52:06,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:06,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 16:52:06,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-01-09 16:52:06,588 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:06,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 104 transitions, 836 flow. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 16:52:06,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:06,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:06,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:07,192 INFO L124 PetriNetUnfolderBase]: 2269/4061 cut-off events. [2025-01-09 16:52:07,192 INFO L125 PetriNetUnfolderBase]: For 104823/104823 co-relation queries the response was YES. [2025-01-09 16:52:07,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17812 conditions, 4061 events. 2269/4061 cut-off events. For 104823/104823 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23557 event pairs, 275 based on Foata normal form. 174/4150 useless extension candidates. Maximal degree in co-relation 17481. Up to 1821 conditions per place. [2025-01-09 16:52:07,220 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 256 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2025-01-09 16:52:07,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 298 transitions, 2985 flow [2025-01-09 16:52:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 16:52:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-09 16:52:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 237 transitions. [2025-01-09 16:52:07,221 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2025-01-09 16:52:07,221 INFO L175 Difference]: Start difference. First operand has 150 places, 104 transitions, 836 flow. Second operand 15 states and 237 transitions. [2025-01-09 16:52:07,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 298 transitions, 2985 flow [2025-01-09 16:52:07,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 298 transitions, 2845 flow, removed 37 selfloop flow, removed 8 redundant places. [2025-01-09 16:52:07,394 INFO L231 Difference]: Finished difference. Result has 162 places, 110 transitions, 872 flow [2025-01-09 16:52:07,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=872, PETRI_PLACES=162, PETRI_TRANSITIONS=110} [2025-01-09 16:52:07,395 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2025-01-09 16:52:07,395 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 110 transitions, 872 flow [2025-01-09 16:52:07,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 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 16:52:07,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:07,395 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:07,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 16:52:07,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:07,596 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:07,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash -855944411, now seen corresponding path program 3 times [2025-01-09 16:52:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:07,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792507556] [2025-01-09 16:52:07,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:52:07,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:07,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 6 equivalence classes. [2025-01-09 16:52:07,605 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 10 of 18 statements. [2025-01-09 16:52:07,606 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:52:07,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:52:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792507556] [2025-01-09 16:52:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792507556] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846618046] [2025-01-09 16:52:07,685 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:52:07,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:07,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:07,690 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 16:52:07,693 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 16:52:07,726 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 6 equivalence classes. [2025-01-09 16:52:07,733 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 10 of 18 statements. [2025-01-09 16:52:07,733 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:52:07,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:07,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:52:07,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:52:07,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:52:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846618046] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:52:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:52:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-01-09 16:52:07,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405335585] [2025-01-09 16:52:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:52:07,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:52:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:07,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:52:07,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:52:07,788 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2025-01-09 16:52:07,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 110 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:52:07,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:07,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2025-01-09 16:52:07,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:08,351 INFO L124 PetriNetUnfolderBase]: 2451/4403 cut-off events. [2025-01-09 16:52:08,351 INFO L125 PetriNetUnfolderBase]: For 98071/98071 co-relation queries the response was YES. [2025-01-09 16:52:08,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19694 conditions, 4403 events. 2451/4403 cut-off events. For 98071/98071 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25868 event pairs, 650 based on Foata normal form. 82/4432 useless extension candidates. Maximal degree in co-relation 19027. Up to 1557 conditions per place. [2025-01-09 16:52:08,423 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 210 selfloop transitions, 32 changer transitions 7/254 dead transitions. [2025-01-09 16:52:08,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 254 transitions, 2737 flow [2025-01-09 16:52:08,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:52:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:52:08,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2025-01-09 16:52:08,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2025-01-09 16:52:08,424 INFO L175 Difference]: Start difference. First operand has 162 places, 110 transitions, 872 flow. Second operand 9 states and 146 transitions. [2025-01-09 16:52:08,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 254 transitions, 2737 flow [2025-01-09 16:52:08,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 254 transitions, 2347 flow, removed 148 selfloop flow, removed 8 redundant places. [2025-01-09 16:52:08,605 INFO L231 Difference]: Finished difference. Result has 164 places, 116 transitions, 964 flow [2025-01-09 16:52:08,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=964, PETRI_PLACES=164, PETRI_TRANSITIONS=116} [2025-01-09 16:52:08,606 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2025-01-09 16:52:08,606 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 116 transitions, 964 flow [2025-01-09 16:52:08,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 16:52:08,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:08,606 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:08,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 16:52:08,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:08,807 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:08,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash -968715749, now seen corresponding path program 3 times [2025-01-09 16:52:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:08,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602583562] [2025-01-09 16:52:08,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:52:08,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:08,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 6 equivalence classes. [2025-01-09 16:52:08,818 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 12 of 20 statements. [2025-01-09 16:52:08,818 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:52:08,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:52:08,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602583562] [2025-01-09 16:52:08,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602583562] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37169905] [2025-01-09 16:52:08,877 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:52:08,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:08,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:08,878 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 16:52:08,880 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 16:52:08,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 6 equivalence classes. [2025-01-09 16:52:08,921 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 12 of 20 statements. [2025-01-09 16:52:08,921 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 16:52:08,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:08,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 16:52:08,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-09 16:52:08,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 16:52:08,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37169905] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 16:52:08,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 16:52:08,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-01-09 16:52:08,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311625321] [2025-01-09 16:52:08,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 16:52:08,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 16:52:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:08,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 16:52:08,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-09 16:52:08,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2025-01-09 16:52:08,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 116 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:52:08,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:08,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2025-01-09 16:52:08,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:09,359 INFO L124 PetriNetUnfolderBase]: 2581/4529 cut-off events. [2025-01-09 16:52:09,359 INFO L125 PetriNetUnfolderBase]: For 116665/116665 co-relation queries the response was YES. [2025-01-09 16:52:09,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20556 conditions, 4529 events. 2581/4529 cut-off events. For 116665/116665 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25980 event pairs, 680 based on Foata normal form. 89/4616 useless extension candidates. Maximal degree in co-relation 19916. Up to 1677 conditions per place. [2025-01-09 16:52:09,381 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 104 selfloop transitions, 7 changer transitions 145/261 dead transitions. [2025-01-09 16:52:09,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 261 transitions, 2776 flow [2025-01-09 16:52:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 16:52:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-09 16:52:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2025-01-09 16:52:09,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2025-01-09 16:52:09,384 INFO L175 Difference]: Start difference. First operand has 164 places, 116 transitions, 964 flow. Second operand 9 states and 143 transitions. [2025-01-09 16:52:09,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 261 transitions, 2776 flow [2025-01-09 16:52:09,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 261 transitions, 2322 flow, removed 220 selfloop flow, removed 2 redundant places. [2025-01-09 16:52:09,593 INFO L231 Difference]: Finished difference. Result has 174 places, 72 transitions, 519 flow [2025-01-09 16:52:09,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=519, PETRI_PLACES=174, PETRI_TRANSITIONS=72} [2025-01-09 16:52:09,594 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2025-01-09 16:52:09,594 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 72 transitions, 519 flow [2025-01-09 16:52:09,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 16:52:09,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:09,594 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:09,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 16:52:09,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-09 16:52:09,799 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:09,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1960265070, now seen corresponding path program 3 times [2025-01-09 16:52:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393192105] [2025-01-09 16:52:09,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:52:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:09,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-01-09 16:52:09,811 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:52:09,811 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 16:52:09,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:09,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:09,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393192105] [2025-01-09 16:52:09,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393192105] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:09,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302693687] [2025-01-09 16:52:09,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:52:09,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:09,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:09,997 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 16:52:09,998 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 16:52:10,029 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-01-09 16:52:10,039 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:52:10,039 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 16:52:10,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:10,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 16:52:10,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:10,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:10,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302693687] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:10,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:10,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-01-09 16:52:10,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474815115] [2025-01-09 16:52:10,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:10,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-09 16:52:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:10,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-09 16:52:10,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 16:52:10,383 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:10,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 72 transitions, 519 flow. Second operand has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 16:52:10,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:10,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:10,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:11,181 INFO L124 PetriNetUnfolderBase]: 1771/3205 cut-off events. [2025-01-09 16:52:11,181 INFO L125 PetriNetUnfolderBase]: For 67122/67122 co-relation queries the response was YES. [2025-01-09 16:52:11,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14164 conditions, 3205 events. 1771/3205 cut-off events. For 67122/67122 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 16207 event pairs, 421 based on Foata normal form. 336/3541 useless extension candidates. Maximal degree in co-relation 14092. Up to 1020 conditions per place. [2025-01-09 16:52:11,201 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 385 selfloop transitions, 28 changer transitions 15/434 dead transitions. [2025-01-09 16:52:11,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 434 transitions, 4558 flow [2025-01-09 16:52:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 16:52:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-01-09 16:52:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 395 transitions. [2025-01-09 16:52:11,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2025-01-09 16:52:11,203 INFO L175 Difference]: Start difference. First operand has 174 places, 72 transitions, 519 flow. Second operand 27 states and 395 transitions. [2025-01-09 16:52:11,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 434 transitions, 4558 flow [2025-01-09 16:52:11,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 434 transitions, 3461 flow, removed 524 selfloop flow, removed 16 redundant places. [2025-01-09 16:52:11,294 INFO L231 Difference]: Finished difference. Result has 171 places, 84 transitions, 644 flow [2025-01-09 16:52:11,294 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=644, PETRI_PLACES=171, PETRI_TRANSITIONS=84} [2025-01-09 16:52:11,294 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2025-01-09 16:52:11,295 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 84 transitions, 644 flow [2025-01-09 16:52:11,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 16:52:11,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:11,295 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:11,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 16:52:11,495 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,SelfDestructingSolverStorable14 [2025-01-09 16:52:11,495 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:11,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2000701264, now seen corresponding path program 3 times [2025-01-09 16:52:11,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:11,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256785787] [2025-01-09 16:52:11,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:52:11,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:11,504 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-01-09 16:52:11,515 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:52:11,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 16:52:11,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:11,954 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:11,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:11,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256785787] [2025-01-09 16:52:11,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256785787] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:11,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771197417] [2025-01-09 16:52:11,954 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 16:52:11,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:11,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:11,956 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 16:52:11,957 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 16:52:11,988 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-01-09 16:52:11,998 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 16:52:11,998 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 16:52:11,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:11,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 16:52:12,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:12,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771197417] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:12,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-01-09 16:52:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350734410] [2025-01-09 16:52:12,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:12,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-09 16:52:12,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:12,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-09 16:52:12,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 16:52:12,339 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:12,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 84 transitions, 644 flow. Second operand has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 16:52:12,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:12,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:12,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:13,229 INFO L124 PetriNetUnfolderBase]: 2287/4074 cut-off events. [2025-01-09 16:52:13,230 INFO L125 PetriNetUnfolderBase]: For 36013/36013 co-relation queries the response was YES. [2025-01-09 16:52:13,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17035 conditions, 4074 events. 2287/4074 cut-off events. For 36013/36013 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 20957 event pairs, 693 based on Foata normal form. 348/4422 useless extension candidates. Maximal degree in co-relation 16965. Up to 1836 conditions per place. [2025-01-09 16:52:13,255 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 423 selfloop transitions, 28 changer transitions 14/471 dead transitions. [2025-01-09 16:52:13,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 471 transitions, 3778 flow [2025-01-09 16:52:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 16:52:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-01-09 16:52:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 420 transitions. [2025-01-09 16:52:13,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-01-09 16:52:13,256 INFO L175 Difference]: Start difference. First operand has 171 places, 84 transitions, 644 flow. Second operand 27 states and 420 transitions. [2025-01-09 16:52:13,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 471 transitions, 3778 flow [2025-01-09 16:52:13,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 471 transitions, 3618 flow, removed 61 selfloop flow, removed 14 redundant places. [2025-01-09 16:52:13,317 INFO L231 Difference]: Finished difference. Result has 195 places, 96 transitions, 716 flow [2025-01-09 16:52:13,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=716, PETRI_PLACES=195, PETRI_TRANSITIONS=96} [2025-01-09 16:52:13,317 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2025-01-09 16:52:13,317 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 96 transitions, 716 flow [2025-01-09 16:52:13,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 16:52:13,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:13,318 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:13,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 16:52:13,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:13,522 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:13,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1412943110, now seen corresponding path program 4 times [2025-01-09 16:52:13,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:13,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42268369] [2025-01-09 16:52:13,522 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:52:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:13,526 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:52:13,534 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:52:13,534 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:52:13,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:13,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42268369] [2025-01-09 16:52:13,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42268369] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807326598] [2025-01-09 16:52:13,934 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:52:13,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:13,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:13,936 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 16:52:13,939 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 16:52:13,967 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:52:13,979 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:52:13,979 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:52:13,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:13,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 16:52:13,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:14,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807326598] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:15,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:15,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 76 [2025-01-09 16:52:15,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630845000] [2025-01-09 16:52:15,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:15,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-01-09 16:52:15,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:15,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-01-09 16:52:15,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=3605, Unknown=0, NotChecked=0, Total=5852 [2025-01-09 16:52:15,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:15,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 96 transitions, 716 flow. Second operand has 77 states, 77 states have (on average 9.142857142857142) internal successors, (704), 77 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 16:52:15,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:15,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:15,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:17,122 INFO L124 PetriNetUnfolderBase]: 3295/5752 cut-off events. [2025-01-09 16:52:17,122 INFO L125 PetriNetUnfolderBase]: For 187620/187620 co-relation queries the response was YES. [2025-01-09 16:52:17,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23864 conditions, 5752 events. 3295/5752 cut-off events. For 187620/187620 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 28344 event pairs, 745 based on Foata normal form. 672/6424 useless extension candidates. Maximal degree in co-relation 23782. Up to 1884 conditions per place. [2025-01-09 16:52:17,154 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 757 selfloop transitions, 52 changer transitions 15/830 dead transitions. [2025-01-09 16:52:17,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 830 transitions, 6813 flow [2025-01-09 16:52:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-01-09 16:52:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-01-09 16:52:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 743 transitions. [2025-01-09 16:52:17,155 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48562091503267973 [2025-01-09 16:52:17,155 INFO L175 Difference]: Start difference. First operand has 195 places, 96 transitions, 716 flow. Second operand 51 states and 743 transitions. [2025-01-09 16:52:17,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 830 transitions, 6813 flow [2025-01-09 16:52:17,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 830 transitions, 6653 flow, removed 61 selfloop flow, removed 14 redundant places. [2025-01-09 16:52:17,245 INFO L231 Difference]: Finished difference. Result has 255 places, 120 transitions, 1004 flow [2025-01-09 16:52:17,245 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1004, PETRI_PLACES=255, PETRI_TRANSITIONS=120} [2025-01-09 16:52:17,245 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2025-01-09 16:52:17,245 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 120 transitions, 1004 flow [2025-01-09 16:52:17,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 9.142857142857142) internal successors, (704), 77 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 16:52:17,246 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:17,246 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:17,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 16:52:17,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 16:52:17,446 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:17,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash -179905394, now seen corresponding path program 4 times [2025-01-09 16:52:17,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:17,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874719230] [2025-01-09 16:52:17,447 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:52:17,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:17,450 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:52:17,454 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:52:17,454 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:52:17,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:17,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874719230] [2025-01-09 16:52:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874719230] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:17,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36981513] [2025-01-09 16:52:17,916 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 16:52:17,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:17,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:17,919 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 16:52:17,921 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 16:52:17,951 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-01-09 16:52:17,965 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 16:52:17,965 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 16:52:17,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:17,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 16:52:17,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:18,311 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:18,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36981513] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:18,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:18,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 77 [2025-01-09 16:52:18,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373503201] [2025-01-09 16:52:18,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:18,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-01-09 16:52:18,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:18,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-01-09 16:52:18,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2253, Invalid=3753, Unknown=0, NotChecked=0, Total=6006 [2025-01-09 16:52:18,942 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:18,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 120 transitions, 1004 flow. Second operand has 78 states, 78 states have (on average 9.179487179487179) internal successors, (716), 78 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 16:52:18,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:18,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:18,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:21,606 INFO L124 PetriNetUnfolderBase]: 4327/7482 cut-off events. [2025-01-09 16:52:21,606 INFO L125 PetriNetUnfolderBase]: For 219479/219479 co-relation queries the response was YES. [2025-01-09 16:52:21,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32071 conditions, 7482 events. 4327/7482 cut-off events. For 219479/219479 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 38115 event pairs, 1317 based on Foata normal form. 696/8178 useless extension candidates. Maximal degree in co-relation 31965. Up to 3516 conditions per place. [2025-01-09 16:52:21,657 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 831 selfloop transitions, 52 changer transitions 14/903 dead transitions. [2025-01-09 16:52:21,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 903 transitions, 7258 flow [2025-01-09 16:52:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-01-09 16:52:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-01-09 16:52:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 792 transitions. [2025-01-09 16:52:21,661 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2025-01-09 16:52:21,661 INFO L175 Difference]: Start difference. First operand has 255 places, 120 transitions, 1004 flow. Second operand 51 states and 792 transitions. [2025-01-09 16:52:21,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 903 transitions, 7258 flow [2025-01-09 16:52:21,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 903 transitions, 6954 flow, removed 121 selfloop flow, removed 26 redundant places. [2025-01-09 16:52:21,844 INFO L231 Difference]: Finished difference. Result has 303 places, 144 transitions, 1148 flow [2025-01-09 16:52:21,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1148, PETRI_PLACES=303, PETRI_TRANSITIONS=144} [2025-01-09 16:52:21,845 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 274 predicate places. [2025-01-09 16:52:21,845 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 144 transitions, 1148 flow [2025-01-09 16:52:21,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 9.179487179487179) internal successors, (716), 78 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 16:52:21,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:21,846 INFO L206 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:21,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 16:52:22,046 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,SelfDestructingSolverStorable17 [2025-01-09 16:52:22,046 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:22,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2111177094, now seen corresponding path program 5 times [2025-01-09 16:52:22,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:22,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661181] [2025-01-09 16:52:22,047 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:52:22,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:22,057 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 24 equivalence classes. [2025-01-09 16:52:22,079 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 16:52:22,083 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-01-09 16:52:22,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:23,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:23,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661181] [2025-01-09 16:52:23,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661181] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:23,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487544509] [2025-01-09 16:52:23,371 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:52:23,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:23,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:23,374 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 16:52:23,375 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 16:52:23,410 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 24 equivalence classes. [2025-01-09 16:52:23,438 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 16:52:23,438 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-01-09 16:52:23,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:23,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-01-09 16:52:23,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:24,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:27,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487544509] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:27,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:27,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2025-01-09 16:52:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647218926] [2025-01-09 16:52:27,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:27,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-01-09 16:52:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:27,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-01-09 16:52:27,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2025-01-09 16:52:27,265 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:27,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 144 transitions, 1148 flow. Second operand has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 16:52:27,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:27,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:27,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:35,076 INFO L124 PetriNetUnfolderBase]: 6343/10840 cut-off events. [2025-01-09 16:52:35,077 INFO L125 PetriNetUnfolderBase]: For 1486186/1486186 co-relation queries the response was YES. [2025-01-09 16:52:35,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45728 conditions, 10840 events. 6343/10840 cut-off events. For 1486186/1486186 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 52579 event pairs, 1393 based on Foata normal form. 1344/12184 useless extension candidates. Maximal degree in co-relation 45598. Up to 3612 conditions per place. [2025-01-09 16:52:35,169 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1501 selfloop transitions, 100 changer transitions 15/1622 dead transitions. [2025-01-09 16:52:35,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 1622 transitions, 13341 flow [2025-01-09 16:52:35,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-01-09 16:52:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2025-01-09 16:52:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1439 transitions. [2025-01-09 16:52:35,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4845117845117845 [2025-01-09 16:52:35,172 INFO L175 Difference]: Start difference. First operand has 303 places, 144 transitions, 1148 flow. Second operand 99 states and 1439 transitions. [2025-01-09 16:52:35,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 1622 transitions, 13341 flow [2025-01-09 16:52:35,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1622 transitions, 13037 flow, removed 121 selfloop flow, removed 26 redundant places. [2025-01-09 16:52:35,545 INFO L231 Difference]: Finished difference. Result has 423 places, 192 transitions, 1724 flow [2025-01-09 16:52:35,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1724, PETRI_PLACES=423, PETRI_TRANSITIONS=192} [2025-01-09 16:52:35,549 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 394 predicate places. [2025-01-09 16:52:35,549 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 192 transitions, 1724 flow [2025-01-09 16:52:35,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 16:52:35,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:35,550 INFO L206 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:35,557 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 16:52:35,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:35,750 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:35,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:35,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2117100786, now seen corresponding path program 5 times [2025-01-09 16:52:35,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:35,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931195344] [2025-01-09 16:52:35,751 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:52:35,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:35,756 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 24 equivalence classes. [2025-01-09 16:52:35,775 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 16:52:35,775 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-01-09 16:52:35,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:37,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:37,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931195344] [2025-01-09 16:52:37,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931195344] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:37,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637535157] [2025-01-09 16:52:37,180 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 16:52:37,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:37,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:37,183 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 16:52:37,184 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 16:52:37,219 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 24 equivalence classes. [2025-01-09 16:52:37,242 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 16:52:37,242 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-01-09 16:52:37,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:37,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-01-09 16:52:37,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:38,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:52:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:40,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637535157] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:52:40,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:52:40,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2025-01-09 16:52:40,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512564844] [2025-01-09 16:52:40,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:52:40,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-01-09 16:52:40,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:52:40,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-01-09 16:52:40,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2025-01-09 16:52:40,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:52:40,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 192 transitions, 1724 flow. Second operand has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 16:52:40,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:52:40,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:52:40,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:52:50,076 INFO L124 PetriNetUnfolderBase]: 8407/14298 cut-off events. [2025-01-09 16:52:50,077 INFO L125 PetriNetUnfolderBase]: For 1637099/1637099 co-relation queries the response was YES. [2025-01-09 16:52:50,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62143 conditions, 14298 events. 8407/14298 cut-off events. For 1637099/1637099 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 72422 event pairs, 2565 based on Foata normal form. 1392/15690 useless extension candidates. Maximal degree in co-relation 61965. Up to 6876 conditions per place. [2025-01-09 16:52:50,239 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1647 selfloop transitions, 100 changer transitions 14/1767 dead transitions. [2025-01-09 16:52:50,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1767 transitions, 14218 flow [2025-01-09 16:52:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-01-09 16:52:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2025-01-09 16:52:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1536 transitions. [2025-01-09 16:52:50,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5171717171717172 [2025-01-09 16:52:50,242 INFO L175 Difference]: Start difference. First operand has 423 places, 192 transitions, 1724 flow. Second operand 99 states and 1536 transitions. [2025-01-09 16:52:50,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 1767 transitions, 14218 flow [2025-01-09 16:52:51,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1767 transitions, 13626 flow, removed 241 selfloop flow, removed 50 redundant places. [2025-01-09 16:52:51,331 INFO L231 Difference]: Finished difference. Result has 519 places, 240 transitions, 2012 flow [2025-01-09 16:52:51,335 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=2012, PETRI_PLACES=519, PETRI_TRANSITIONS=240} [2025-01-09 16:52:51,335 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 490 predicate places. [2025-01-09 16:52:51,336 INFO L471 AbstractCegarLoop]: Abstraction has has 519 places, 240 transitions, 2012 flow [2025-01-09 16:52:51,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 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 16:52:51,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:52:51,340 INFO L206 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:52:51,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 16:52:51,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:51,541 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:52:51,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:52:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash -49408646, now seen corresponding path program 6 times [2025-01-09 16:52:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:52:51,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568598990] [2025-01-09 16:52:51,543 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:52:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:52:51,550 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 48 equivalence classes. [2025-01-09 16:52:51,581 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 16:52:51,582 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-01-09 16:52:51,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:55,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:52:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568598990] [2025-01-09 16:52:55,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568598990] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:52:55,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702997448] [2025-01-09 16:52:55,967 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:52:55,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:52:55,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:52:55,969 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 16:52:55,970 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 16:52:56,020 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 48 equivalence classes. [2025-01-09 16:52:56,084 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 16:52:56,084 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-01-09 16:52:56,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:52:56,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-01-09 16:52:56,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:52:59,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:52:59,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:53:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:53:02,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702997448] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:53:02,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:53:02,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 203 [2025-01-09 16:53:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407655581] [2025-01-09 16:53:02,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:53:02,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2025-01-09 16:53:02,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:53:02,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2025-01-09 16:53:02,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15147, Invalid=26265, Unknown=0, NotChecked=0, Total=41412 [2025-01-09 16:53:03,043 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:53:03,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 240 transitions, 2012 flow. Second operand has 204 states, 204 states have (on average 9.058823529411764) internal successors, (1848), 204 states have internal predecessors, (1848), 0 states have call successors, (0), 0 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 16:53:03,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:53:03,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:53:03,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 16:53:15,813 INFO L124 PetriNetUnfolderBase]: 8701/14786 cut-off events. [2025-01-09 16:53:15,813 INFO L125 PetriNetUnfolderBase]: For 1157486/1157486 co-relation queries the response was YES. [2025-01-09 16:53:15,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61866 conditions, 14786 events. 8701/14786 cut-off events. For 1157486/1157486 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 74754 event pairs, 2689 based on Foata normal form. 196/14982 useless extension candidates. Maximal degree in co-relation 61640. Up to 7068 conditions per place. [2025-01-09 16:53:16,010 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1654 selfloop transitions, 107 changer transitions 15/1782 dead transitions. [2025-01-09 16:53:16,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 1782 transitions, 14738 flow [2025-01-09 16:53:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-01-09 16:53:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2025-01-09 16:53:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1496 transitions. [2025-01-09 16:53:16,016 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47044025157232705 [2025-01-09 16:53:16,016 INFO L175 Difference]: Start difference. First operand has 519 places, 240 transitions, 2012 flow. Second operand 106 states and 1496 transitions. [2025-01-09 16:53:16,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 1782 transitions, 14738 flow [2025-01-09 16:53:17,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1782 transitions, 14146 flow, removed 241 selfloop flow, removed 50 redundant places. [2025-01-09 16:53:17,667 INFO L231 Difference]: Finished difference. Result has 581 places, 247 transitions, 1740 flow [2025-01-09 16:53:17,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=1740, PETRI_PLACES=581, PETRI_TRANSITIONS=247} [2025-01-09 16:53:17,668 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 552 predicate places. [2025-01-09 16:53:17,668 INFO L471 AbstractCegarLoop]: Abstraction has has 581 places, 247 transitions, 1740 flow [2025-01-09 16:53:17,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 9.058823529411764) internal successors, (1848), 204 states have internal predecessors, (1848), 0 states have call successors, (0), 0 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 16:53:17,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 16:53:17,669 INFO L206 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 16:53:17,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 16:53:17,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:53:17,873 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-01-09 16:53:17,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 16:53:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash 692492302, now seen corresponding path program 6 times [2025-01-09 16:53:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 16:53:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402438666] [2025-01-09 16:53:17,874 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:53:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 16:53:17,882 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 48 equivalence classes. [2025-01-09 16:53:17,909 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 16:53:17,910 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-01-09 16:53:17,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:53:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:53:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 16:53:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402438666] [2025-01-09 16:53:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402438666] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 16:53:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987426012] [2025-01-09 16:53:21,929 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 16:53:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 16:53:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 16:53:21,932 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 16:53:21,933 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 16:53:21,975 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 48 equivalence classes. [2025-01-09 16:53:22,026 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 16:53:22,026 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-01-09 16:53:22,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 16:53:22,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-01-09 16:53:22,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 16:53:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:53:25,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 16:53:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 16:53:29,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987426012] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 16:53:29,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 16:53:29,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 202 [2025-01-09 16:53:29,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416415760] [2025-01-09 16:53:29,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 16:53:29,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2025-01-09 16:53:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 16:53:29,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2025-01-09 16:53:29,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14950, Invalid=26056, Unknown=0, NotChecked=0, Total=41006 [2025-01-09 16:53:29,764 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-01-09 16:53:29,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 247 transitions, 1740 flow. Second operand has 203 states, 203 states have (on average 9.05911330049261) internal successors, (1839), 203 states have internal predecessors, (1839), 0 states have call successors, (0), 0 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 16:53:29,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 16:53:29,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-01-09 16:53:29,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand