./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:15:30,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:15:30,187 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:15:30,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:15:30,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:15:30,218 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:15:30,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:15:30,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:15:30,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:15:30,221 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:15:30,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:15:30,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:15:30,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:15:30,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:15:30,221 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:15:30,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:15:30,222 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:15:30,222 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:15:30,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:15:30,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:15:30,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:15:30,223 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:15:30,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:15:30,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:15:30,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:15:30,224 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 -> 103efe8931e099ca6c2446ad32c4c46818a6d213fc850bc42032bda38d601e6f [2025-02-08 01:15:30,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:15:30,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:15:30,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:15:30,544 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:15:30,544 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:15:30,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-02-08 01:15:31,722 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eb94e735a/70e24403f82348fba7fc926aae3de7bd/FLAG2f2226a2b [2025-02-08 01:15:31,980 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:15:31,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c [2025-02-08 01:15:31,989 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eb94e735a/70e24403f82348fba7fc926aae3de7bd/FLAG2f2226a2b [2025-02-08 01:15:32,306 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/eb94e735a/70e24403f82348fba7fc926aae3de7bd [2025-02-08 01:15:32,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:15:32,311 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:15:32,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:15:32,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:15:32,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:15:32,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25821b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32, skipping insertion in model container [2025-02-08 01:15:32,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,331 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:15:32,460 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3066,3079] [2025-02-08 01:15:32,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:15:32,475 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:15:32,490 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-5.wvr.c[3066,3079] [2025-02-08 01:15:32,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:15:32,501 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:15:32,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32 WrapperNode [2025-02-08 01:15:32,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:15:32,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:15:32,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:15:32,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:15:32,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,523 INFO L138 Inliner]: procedures = 21, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 129 [2025-02-08 01:15:32,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:15:32,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:15:32,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:15:32,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:15:32,530 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,532 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,540 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]. [2025-02-08 01:15:32,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,544 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,545 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:15:32,548 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:15:32,548 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:15:32,548 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:15:32,549 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (1/1) ... [2025-02-08 01:15:32,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:15:32,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:32,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:15:32,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:15:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:15:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 01:15:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 01:15:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 01:15:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 01:15:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 01:15:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 01:15:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:15:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:15:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:15:32,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:15:32,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:15:32,597 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:15:32,670 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:15:32,672 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:15:32,874 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:15:32,876 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:15:33,006 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:15:33,011 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:15:33,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:15:33 BoogieIcfgContainer [2025-02-08 01:15:33,011 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:15:33,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:15:33,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:15:33,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:15:33,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:15:32" (1/3) ... [2025-02-08 01:15:33,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754cb2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:15:33, skipping insertion in model container [2025-02-08 01:15:33,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:15:32" (2/3) ... [2025-02-08 01:15:33,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754cb2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:15:33, skipping insertion in model container [2025-02-08 01:15:33,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:15:33" (3/3) ... [2025-02-08 01:15:33,019 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2025-02-08 01:15:33,029 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:15:33,030 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-misc-5.wvr.c that has 4 procedures, 33 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-08 01:15:33,030 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:15:33,089 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-08 01:15:33,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 93 flow [2025-02-08 01:15:33,151 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2025-02-08 01:15:33,153 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:15:33,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 4/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 72 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-02-08 01:15:33,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 93 flow [2025-02-08 01:15:33,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 82 flow [2025-02-08 01:15:33,167 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:15:33,180 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;@50adf797, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:15:33,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:15:33,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:15:33,200 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2025-02-08 01:15:33,200 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-08 01:15:33,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:33,200 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:33,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:33,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:33,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1794116892, now seen corresponding path program 1 times [2025-02-08 01:15:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:33,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751203805] [2025-02-08 01:15:33,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:33,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:33,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 01:15:33,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 01:15:33,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:33,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:33,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751203805] [2025-02-08 01:15:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751203805] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:33,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:33,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:15:33,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012034397] [2025-02-08 01:15:33,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:33,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:33,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:33,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:33,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:33,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2025-02-08 01:15:33,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:33,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:33,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:34,187 INFO L124 PetriNetUnfolderBase]: 2110/3011 cut-off events. [2025-02-08 01:15:34,187 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2025-02-08 01:15:34,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6229 conditions, 3011 events. 2110/3011 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13969 event pairs, 78 based on Foata normal form. 0/2583 useless extension candidates. Maximal degree in co-relation 6118. Up to 1069 conditions per place. [2025-02-08 01:15:34,206 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 80 selfloop transitions, 8 changer transitions 6/98 dead transitions. [2025-02-08 01:15:34,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 98 transitions, 417 flow [2025-02-08 01:15:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:15:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:15:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2025-02-08 01:15:34,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2025-02-08 01:15:34,219 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 82 flow. Second operand 6 states and 138 transitions. [2025-02-08 01:15:34,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 98 transitions, 417 flow [2025-02-08 01:15:34,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 98 transitions, 395 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-02-08 01:15:34,228 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 120 flow [2025-02-08 01:15:34,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2025-02-08 01:15:34,232 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2025-02-08 01:15:34,233 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 120 flow [2025-02-08 01:15:34,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 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) [2025-02-08 01:15:34,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:34,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:34,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:15:34,234 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:34,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:34,235 INFO L85 PathProgramCache]: Analyzing trace with hash 407548447, now seen corresponding path program 1 times [2025-02-08 01:15:34,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:34,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457795495] [2025-02-08 01:15:34,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:34,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:34,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:15:34,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:15:34,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:34,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:34,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:34,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:34,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457795495] [2025-02-08 01:15:34,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457795495] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:34,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:34,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:15:34,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781445185] [2025-02-08 01:15:34,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:34,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:15:34,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:34,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:15:34,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:15:34,330 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:34,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:34,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:34,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:34,534 INFO L124 PetriNetUnfolderBase]: 1991/2921 cut-off events. [2025-02-08 01:15:34,535 INFO L125 PetriNetUnfolderBase]: For 816/816 co-relation queries the response was YES. [2025-02-08 01:15:34,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6827 conditions, 2921 events. 1991/2921 cut-off events. For 816/816 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13210 event pairs, 680 based on Foata normal form. 78/2568 useless extension candidates. Maximal degree in co-relation 5831. Up to 1656 conditions per place. [2025-02-08 01:15:34,545 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 55 selfloop transitions, 2 changer transitions 1/62 dead transitions. [2025-02-08 01:15:34,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 62 transitions, 304 flow [2025-02-08 01:15:34,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:15:34,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:15:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-02-08 01:15:34,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2025-02-08 01:15:34,547 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 120 flow. Second operand 3 states and 73 transitions. [2025-02-08 01:15:34,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 62 transitions, 304 flow [2025-02-08 01:15:34,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 01:15:34,549 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 134 flow [2025-02-08 01:15:34,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2025-02-08 01:15:34,549 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2025-02-08 01:15:34,549 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 134 flow [2025-02-08 01:15:34,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:34,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:34,550 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:34,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:15:34,550 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:34,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1316882686, now seen corresponding path program 1 times [2025-02-08 01:15:34,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:34,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795148063] [2025-02-08 01:15:34,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:34,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:15:34,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:15:34,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:34,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:34,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795148063] [2025-02-08 01:15:34,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795148063] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:34,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:34,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 01:15:34,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192048372] [2025-02-08 01:15:34,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:34,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 01:15:34,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:34,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 01:15:34,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 01:15:34,599 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:34,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:34,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:34,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:34,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:34,890 INFO L124 PetriNetUnfolderBase]: 2882/4246 cut-off events. [2025-02-08 01:15:34,891 INFO L125 PetriNetUnfolderBase]: For 1578/1578 co-relation queries the response was YES. [2025-02-08 01:15:34,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10306 conditions, 4246 events. 2882/4246 cut-off events. For 1578/1578 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 19856 event pairs, 1041 based on Foata normal form. 86/3649 useless extension candidates. Maximal degree in co-relation 9152. Up to 2663 conditions per place. [2025-02-08 01:15:34,911 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 55 selfloop transitions, 2 changer transitions 1/62 dead transitions. [2025-02-08 01:15:34,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 326 flow [2025-02-08 01:15:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 01:15:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 01:15:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2025-02-08 01:15:34,913 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2025-02-08 01:15:34,913 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 134 flow. Second operand 3 states and 71 transitions. [2025-02-08 01:15:34,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 326 flow [2025-02-08 01:15:34,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:15:34,917 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 148 flow [2025-02-08 01:15:34,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2025-02-08 01:15:34,918 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2025-02-08 01:15:34,918 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 148 flow [2025-02-08 01:15:34,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:34,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:34,918 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:34,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:15:34,919 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:34,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash 548084174, now seen corresponding path program 1 times [2025-02-08 01:15:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:34,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112945843] [2025-02-08 01:15:34,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:34,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:34,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 01:15:34,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 01:15:34,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:34,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:15:35,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:35,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112945843] [2025-02-08 01:15:35,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112945843] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:35,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:35,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:15:35,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945557716] [2025-02-08 01:15:35,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:35,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:15:35,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:35,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:15:35,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:15:35,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:35,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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) [2025-02-08 01:15:35,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:35,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:35,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:35,337 INFO L124 PetriNetUnfolderBase]: 2591/3810 cut-off events. [2025-02-08 01:15:35,337 INFO L125 PetriNetUnfolderBase]: For 1784/1784 co-relation queries the response was YES. [2025-02-08 01:15:35,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 3810 events. 2591/3810 cut-off events. For 1784/1784 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 16921 event pairs, 175 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 8422. Up to 1972 conditions per place. [2025-02-08 01:15:35,352 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 60 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2025-02-08 01:15:35,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 377 flow [2025-02-08 01:15:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:15:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:15:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-08 01:15:35,353 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2025-02-08 01:15:35,353 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 148 flow. Second operand 4 states and 83 transitions. [2025-02-08 01:15:35,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 377 flow [2025-02-08 01:15:35,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:15:35,359 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 173 flow [2025-02-08 01:15:35,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2025-02-08 01:15:35,360 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2025-02-08 01:15:35,361 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 173 flow [2025-02-08 01:15:35,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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) [2025-02-08 01:15:35,361 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:35,361 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:35,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:15:35,361 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:35,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:35,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1981201134, now seen corresponding path program 2 times [2025-02-08 01:15:35,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:35,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009776499] [2025-02-08 01:15:35,362 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:15:35,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:35,370 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-08 01:15:35,378 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 24 of 28 statements. [2025-02-08 01:15:35,378 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:15:35,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:35,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:35,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009776499] [2025-02-08 01:15:35,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009776499] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:35,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:35,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:15:35,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993009406] [2025-02-08 01:15:35,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:35,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:35,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:35,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:35,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:35,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:35,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-02-08 01:15:35,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:35,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:35,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:35,792 INFO L124 PetriNetUnfolderBase]: 3347/4898 cut-off events. [2025-02-08 01:15:35,792 INFO L125 PetriNetUnfolderBase]: For 2738/2738 co-relation queries the response was YES. [2025-02-08 01:15:35,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12627 conditions, 4898 events. 3347/4898 cut-off events. For 2738/2738 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 23596 event pairs, 277 based on Foata normal form. 72/4406 useless extension candidates. Maximal degree in co-relation 11493. Up to 2034 conditions per place. [2025-02-08 01:15:35,813 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 77 selfloop transitions, 7 changer transitions 0/88 dead transitions. [2025-02-08 01:15:35,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 88 transitions, 489 flow [2025-02-08 01:15:35,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:15:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:15:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-08 01:15:35,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2025-02-08 01:15:35,815 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 173 flow. Second operand 5 states and 108 transitions. [2025-02-08 01:15:35,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 88 transitions, 489 flow [2025-02-08 01:15:35,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 88 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 01:15:35,819 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 192 flow [2025-02-08 01:15:35,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2025-02-08 01:15:35,819 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2025-02-08 01:15:35,819 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 192 flow [2025-02-08 01:15:35,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2025-02-08 01:15:35,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:35,820 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:35,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:15:35,820 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:35,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1550598892, now seen corresponding path program 3 times [2025-02-08 01:15:35,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:35,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57015044] [2025-02-08 01:15:35,821 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:15:35,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:35,826 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 28 statements into 2 equivalence classes. [2025-02-08 01:15:35,830 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 24 of 28 statements. [2025-02-08 01:15:35,830 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 01:15:35,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:15:35,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:35,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57015044] [2025-02-08 01:15:35,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57015044] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:15:35,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:15:35,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:15:35,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638359281] [2025-02-08 01:15:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:15:35,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:35,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:35,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:35,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:35,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:35,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:35,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:35,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:36,291 INFO L124 PetriNetUnfolderBase]: 4741/6920 cut-off events. [2025-02-08 01:15:36,291 INFO L125 PetriNetUnfolderBase]: For 4995/4995 co-relation queries the response was YES. [2025-02-08 01:15:36,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17981 conditions, 6920 events. 4741/6920 cut-off events. For 4995/4995 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 34194 event pairs, 965 based on Foata normal form. 134/6243 useless extension candidates. Maximal degree in co-relation 13973. Up to 2689 conditions per place. [2025-02-08 01:15:36,318 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 80 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2025-02-08 01:15:36,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 533 flow [2025-02-08 01:15:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:15:36,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:15:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2025-02-08 01:15:36,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2025-02-08 01:15:36,320 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 192 flow. Second operand 5 states and 107 transitions. [2025-02-08 01:15:36,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 533 flow [2025-02-08 01:15:36,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 90 transitions, 519 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:15:36,327 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 202 flow [2025-02-08 01:15:36,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2025-02-08 01:15:36,328 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2025-02-08 01:15:36,328 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 202 flow [2025-02-08 01:15:36,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:36,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:36,328 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:36,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:15:36,328 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:36,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:36,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1974049402, now seen corresponding path program 4 times [2025-02-08 01:15:36,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:36,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361526477] [2025-02-08 01:15:36,329 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:36,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:36,334 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-08 01:15:36,349 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 01:15:36,350 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:15:36,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361526477] [2025-02-08 01:15:36,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361526477] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582216443] [2025-02-08 01:15:36,488 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 01:15:36,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:36,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:36,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:36,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 01:15:36,533 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-08 01:15:36,550 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 01:15:36,550 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 01:15:36,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:36,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 01:15:36,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:36,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:36,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582216443] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:36,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:36,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 15 [2025-02-08 01:15:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624522392] [2025-02-08 01:15:36,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:36,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 01:15:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:36,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 01:15:36,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:15:36,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:36,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 202 flow. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:36,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:36,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:36,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:38,843 INFO L124 PetriNetUnfolderBase]: 17298/25096 cut-off events. [2025-02-08 01:15:38,843 INFO L125 PetriNetUnfolderBase]: For 18550/18550 co-relation queries the response was YES. [2025-02-08 01:15:38,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65768 conditions, 25096 events. 17298/25096 cut-off events. For 18550/18550 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 149592 event pairs, 1102 based on Foata normal form. 664/22856 useless extension candidates. Maximal degree in co-relation 25752. Up to 5432 conditions per place. [2025-02-08 01:15:38,930 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 376 selfloop transitions, 107 changer transitions 37/524 dead transitions. [2025-02-08 01:15:38,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 524 transitions, 2941 flow [2025-02-08 01:15:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-08 01:15:38,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2025-02-08 01:15:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 740 transitions. [2025-02-08 01:15:38,935 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5409356725146199 [2025-02-08 01:15:38,935 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 202 flow. Second operand 38 states and 740 transitions. [2025-02-08 01:15:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 524 transitions, 2941 flow [2025-02-08 01:15:38,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 524 transitions, 2903 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:15:38,948 INFO L231 Difference]: Finished difference. Result has 117 places, 156 transitions, 1307 flow [2025-02-08 01:15:38,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1307, PETRI_PLACES=117, PETRI_TRANSITIONS=156} [2025-02-08 01:15:38,949 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 79 predicate places. [2025-02-08 01:15:38,949 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 156 transitions, 1307 flow [2025-02-08 01:15:38,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:38,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:38,949 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:38,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 01:15:39,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:39,154 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:39,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:39,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1037200957, now seen corresponding path program 5 times [2025-02-08 01:15:39,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:39,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24091219] [2025-02-08 01:15:39,156 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:39,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:39,166 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 3 equivalence classes. [2025-02-08 01:15:39,174 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 01:15:39,175 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:15:39,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:15:39,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24091219] [2025-02-08 01:15:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24091219] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201175576] [2025-02-08 01:15:39,239 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 01:15:39,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:39,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:39,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:39,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 01:15:39,276 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 3 equivalence classes. [2025-02-08 01:15:39,294 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 01:15:39,294 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-08 01:15:39,294 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:39,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 01:15:39,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:39,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 01:15:39,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201175576] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:39,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:39,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2025-02-08 01:15:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625570727] [2025-02-08 01:15:39,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:39,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:39,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:39,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:39,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:39,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 156 transitions, 1307 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:39,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:39,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:39,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:41,543 INFO L124 PetriNetUnfolderBase]: 18022/26488 cut-off events. [2025-02-08 01:15:41,544 INFO L125 PetriNetUnfolderBase]: For 153550/153550 co-relation queries the response was YES. [2025-02-08 01:15:41,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109675 conditions, 26488 events. 18022/26488 cut-off events. For 153550/153550 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 159715 event pairs, 8026 based on Foata normal form. 270/23831 useless extension candidates. Maximal degree in co-relation 109135. Up to 11002 conditions per place. [2025-02-08 01:15:41,731 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 299 selfloop transitions, 40 changer transitions 1/344 dead transitions. [2025-02-08 01:15:41,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 344 transitions, 3512 flow [2025-02-08 01:15:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:15:41,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:15:41,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2025-02-08 01:15:41,733 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2025-02-08 01:15:41,733 INFO L175 Difference]: Start difference. First operand has 117 places, 156 transitions, 1307 flow. Second operand 4 states and 106 transitions. [2025-02-08 01:15:41,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 344 transitions, 3512 flow [2025-02-08 01:15:42,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 344 transitions, 3088 flow, removed 171 selfloop flow, removed 5 redundant places. [2025-02-08 01:15:42,173 INFO L231 Difference]: Finished difference. Result has 117 places, 188 transitions, 1625 flow [2025-02-08 01:15:42,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1625, PETRI_PLACES=117, PETRI_TRANSITIONS=188} [2025-02-08 01:15:42,176 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 79 predicate places. [2025-02-08 01:15:42,178 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 188 transitions, 1625 flow [2025-02-08 01:15:42,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:42,178 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:42,178 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:42,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:15:42,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:42,379 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:42,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:42,379 INFO L85 PathProgramCache]: Analyzing trace with hash 432086684, now seen corresponding path program 1 times [2025-02-08 01:15:42,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:42,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461477416] [2025-02-08 01:15:42,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:42,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 01:15:42,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 01:15:42,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:42,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:42,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:42,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461477416] [2025-02-08 01:15:42,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461477416] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:42,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86067336] [2025-02-08 01:15:42,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:15:42,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:42,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:42,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:15:42,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 01:15:42,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 01:15:42,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:15:42,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:42,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 01:15:42,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:15:42,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:42,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86067336] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:42,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:42,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 4 [2025-02-08 01:15:42,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501276097] [2025-02-08 01:15:42,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:42,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:15:42,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:42,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:15:42,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:15:42,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:42,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 188 transitions, 1625 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:42,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:42,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:42,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:15:47,580 INFO L124 PetriNetUnfolderBase]: 38627/56829 cut-off events. [2025-02-08 01:15:47,580 INFO L125 PetriNetUnfolderBase]: For 335348/335348 co-relation queries the response was YES. [2025-02-08 01:15:47,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233501 conditions, 56829 events. 38627/56829 cut-off events. For 335348/335348 co-relation queries the response was YES. Maximal size of possible extension queue 1445. Compared 379360 event pairs, 16466 based on Foata normal form. 848/51422 useless extension candidates. Maximal degree in co-relation 229330. Up to 21334 conditions per place. [2025-02-08 01:15:48,104 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 389 selfloop transitions, 36 changer transitions 1/430 dead transitions. [2025-02-08 01:15:48,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 430 transitions, 4619 flow [2025-02-08 01:15:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:15:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:15:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2025-02-08 01:15:48,105 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2025-02-08 01:15:48,105 INFO L175 Difference]: Start difference. First operand has 117 places, 188 transitions, 1625 flow. Second operand 4 states and 102 transitions. [2025-02-08 01:15:48,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 430 transitions, 4619 flow [2025-02-08 01:15:48,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 430 transitions, 4477 flow, removed 71 selfloop flow, removed 0 redundant places. [2025-02-08 01:15:48,869 INFO L231 Difference]: Finished difference. Result has 122 places, 217 transitions, 2036 flow [2025-02-08 01:15:48,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2036, PETRI_PLACES=122, PETRI_TRANSITIONS=217} [2025-02-08 01:15:48,870 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2025-02-08 01:15:48,870 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 217 transitions, 2036 flow [2025-02-08 01:15:48,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:48,870 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:15:48,870 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:15:48,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 01:15:49,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:49,074 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:15:49,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:15:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1403978810, now seen corresponding path program 6 times [2025-02-08 01:15:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:15:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618117108] [2025-02-08 01:15:49,075 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:49,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:15:49,081 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 3 equivalence classes. [2025-02-08 01:15:49,090 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 01:15:49,090 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:15:49,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:49,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:15:49,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618117108] [2025-02-08 01:15:49,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618117108] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:15:49,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914470455] [2025-02-08 01:15:49,225 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 01:15:49,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:15:49,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:15:49,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:15:49,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:15:49,262 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 36 statements into 3 equivalence classes. [2025-02-08 01:15:49,277 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 01:15:49,277 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 01:15:49,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:15:49,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 01:15:49,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:15:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:49,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:15:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 01:15:49,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914470455] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:15:49,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:15:49,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 15 [2025-02-08 01:15:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837572585] [2025-02-08 01:15:49,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:15:49,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 01:15:49,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:15:49,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 01:15:49,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2025-02-08 01:15:49,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:15:49,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 217 transitions, 2036 flow. Second operand has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:15:49,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:15:49,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:15:49,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:16:03,637 INFO L124 PetriNetUnfolderBase]: 100400/145740 cut-off events. [2025-02-08 01:16:03,637 INFO L125 PetriNetUnfolderBase]: For 989686/989686 co-relation queries the response was YES. [2025-02-08 01:16:04,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591046 conditions, 145740 events. 100400/145740 cut-off events. For 989686/989686 co-relation queries the response was YES. Maximal size of possible extension queue 3347. Compared 1031249 event pairs, 10402 based on Foata normal form. 5708/134670 useless extension candidates. Maximal degree in co-relation 581942. Up to 31398 conditions per place. [2025-02-08 01:16:05,028 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 519 selfloop transitions, 348 changer transitions 408/1279 dead transitions. [2025-02-08 01:16:05,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 1279 transitions, 14075 flow [2025-02-08 01:16:05,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-08 01:16:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2025-02-08 01:16:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 875 transitions. [2025-02-08 01:16:05,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55239898989899 [2025-02-08 01:16:05,032 INFO L175 Difference]: Start difference. First operand has 122 places, 217 transitions, 2036 flow. Second operand 44 states and 875 transitions. [2025-02-08 01:16:05,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 1279 transitions, 14075 flow [2025-02-08 01:16:08,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 1279 transitions, 13855 flow, removed 110 selfloop flow, removed 0 redundant places. [2025-02-08 01:16:08,133 INFO L231 Difference]: Finished difference. Result has 186 places, 416 transitions, 5725 flow [2025-02-08 01:16:08,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5725, PETRI_PLACES=186, PETRI_TRANSITIONS=416} [2025-02-08 01:16:08,134 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 148 predicate places. [2025-02-08 01:16:08,134 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 416 transitions, 5725 flow [2025-02-08 01:16:08,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.625) internal successors, (170), 16 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:08,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:16:08,135 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:16:08,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 01:16:08,335 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,SelfDestructingSolverStorable9 [2025-02-08 01:16:08,335 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:16:08,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:16:08,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1021996121, now seen corresponding path program 7 times [2025-02-08 01:16:08,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:16:08,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812099237] [2025-02-08 01:16:08,337 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:16:08,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:16:08,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 01:16:08,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 01:16:08,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:08,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 01:16:08,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:16:08,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812099237] [2025-02-08 01:16:08,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812099237] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:16:08,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218070078] [2025-02-08 01:16:08,461 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 01:16:08,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:16:08,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:16:08,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:16:08,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 01:16:08,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-08 01:16:08,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-08 01:16:08,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:16:08,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:16:08,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 01:16:08,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:16:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 01:16:08,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 01:16:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 01:16:08,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218070078] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 01:16:08,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 01:16:08,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 5 [2025-02-08 01:16:08,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131894953] [2025-02-08 01:16:08,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 01:16:08,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:16:08,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:16:08,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:16:08,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:16:08,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2025-02-08 01:16:08,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 416 transitions, 5725 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 01:16:08,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:16:08,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2025-02-08 01:16:08,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand